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# Jensen Transformers

The World's Finest Transformers

## Sitemaps

- [XML Sitemap](https://www.jensen-transformers.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [How to Troubleshoot Hum and Buzz in Your Home Theater](https://www.jensen-transformers.com/how-to-troubleshoot-hum-and-buzz-in-your-home-theater/) - Trying to troubleshoot hum and buzz noises in a home theater system may seem difficult, but there are some basic steps to follow to simplify the task. The first thing to try while the whole system is turned on is to disconnect the cable TV line at the cable box. If the noise is gone,
- [fa test](https://www.jensen-transformers.com/fa-test/) - Canada
- [More Than Meets The Eye](https://www.jensen-transformers.com/more-than-meets-the-eye/) - Jensen Transformers’ president Bill Whitlock talks cores, phase distortion, and the enduring legacy of Deane Jensen. AudioTechnology.com's take on Jensen

## Pages

- [Home](https://www.jensen-transformers.com/) - Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum consequat, orci ac laoreet cursus, dolor sem luctus lorem, eget consequat magna felis a magna. Aliquam scelerisque condimentum ante, eget facilisis tortor lobortis in. In interdum venenatis justo eget consequat. Morbi commodo rhoncus mi nec pharetra. Aliquam erat volutpat. Mauris non lorem eu dolor hendrerit dapibus.
- [Line Output](https://www.jensen-transformers.com/transformers/line-output/) - Line Output Transformer Selector Guide Line output transformers are useful mainly because they allow any output stage circuit topology, whether balanced or unbalanced, to drive any equipment input, whether balanced or unbalanced, without regard to special connection rules or specific cables. Due to the isolation they afford, hum can be substantially reduced. Jensen output transformers
- [Distributors](https://www.jensen-transformers.com/distributors/) - Note: Jensen component audio transformers are sold directly to OEM manufacturers (including their contracted assembly house) by Jensen Transformers, and not through any distributors (authorized or other). For A/V installers and End Users, if you wish to order our ISO-MAX products or small quantities of our Jensen audio transformers, below is our list of authorized
- [Contact](https://www.jensen-transformers.com/contact/) - Jensen / Iso-Max corporate contacts: COVID-19 UPDATE: Jensen Transformers is still closed to the public, however we are now available by phone and email. Please be patient as stock is limited and all orders will be updated with an ETA. If you have any questions visit the contact page for more info. Jensen Transformers, Inc.
- [Seminars](https://www.jensen-transformers.com/seminars/) - Bill Whitlock, President of Jensen Transformers, speaks regularly on issues related to system interconnection and grounding. His classes at trade shows such as CEDIA and NSCA are some of the most highly rated and most popular classes presented. AC Power and Interconnects for Low System Noise Friday, Sept. 30, 2022 9:00 am – 12:00
- [What is a ground loop?](https://www.jensen-transformers.com/what-is-a-ground-loop/) - Noise... Ground Isolation Solves the Fundamental Problem Ground loop problems are caused by small voltage differences that normally exist between the ‘grounds’ at the send and receive ends of a signal cable. In an unbalanced interface (video and consumer audio), this ground voltage difference directly adds to the signal. This generally produces hum
- [Privacy Policy](https://www.jensen-transformers.com/privacy-policy/) - Effective date: May 24, 2018 Jensen Transformers ("us", "we", or "our") operates the https://www.jensen-transformers.com website (the "Service"). This page informs you of our policies regarding the collection, use, and disclosure of personal data when you use our Service and the choices you have made associated with that data. We use your data to provide
- [Copyright](https://www.jensen-transformers.com/copyright/) - Website Terms of Use Accessing this Jensen website, any of the associate Jensen websites or C•TEC distribution website is completely free and voluntary and constitutes your consent for Jensen to occasionally monitor its use by all persons. All reasonable efforts will be made to ensure that the website remain on line and content be as
- [Careers](https://www.jensen-transformers.com/careers/) - Jensen Transformers Inc. is a growing company with lots of exciting opportunities. We are on the constant lookout for enthusiastic and motivated people to join our team.Due to the large number of applications we receive, we will only reply to those where we feel there may be a potential fit. Applications received without a cover letter
- [Login](https://www.jensen-transformers.com/login/) - [pie_register_login]
- [Line Input](https://www.jensen-transformers.com/transformers/line-input/) - Line Input Transformer Selector GuideFor eliminating hum and buzz in line-level signals, Faraday-shielded input transformers are the preferred solution. These transformers offer extended low-frequency and Bessel-tailored high-frequency responses, resulting in ultra-low time-domain distortion (DLP), and use internal Faraday shields for unmatched immunity to hum, buzz, and RF interference (high CMRR). Transformer-less inputs suffer “breakthrough” noise in
- [Login](https://www.jensen-transformers.com/pie-register-login/) - [pie_register_login]
- [History](https://www.jensen-transformers.com/history/) - Below is a brief history of Deane Jensen and Jensen Transformers. To read the full story written by Bill Whitlock click here1942 Deane Jensen's Early Life & CareerBorn in Annapolis, Maryland, in 1942. Deane grew up in Princeton, New Jersey. His Norwegian father, Dr. Arthur S. Jensen, was a physicist who earned his PhD. at University
- [Registration](https://www.jensen-transformers.com/registration/) - [pie_register_form]
- [Mic Splitter](https://www.jensen-transformers.com/transformers/mic-splitter/) - Microphone 'Splitter' Transformer Selector Guide These transformers offer not only extended low-frequency and Bessel-tailored high-frequency responses, resulting in ultra-low time-domain distortion (DLP), but use Jensen-pioneered multiple Faraday shields for unmatched immunity to hum, buzz, and RF interference. These noise problems can plague systems where distances between signal destinations is large and abnormally high ground-voltage-differences are
- [Register ](https://www.jensen-transformers.com/register/) - [pie_register_form]Jensen Transformers will not sell or give personal information, including email addresses to any outside entity without the permission of the above named authorized contact.
- [Moving Coil](https://www.jensen-transformers.com/transformers/moving-coil/) - Step-up Transformers Step-up transformers (SUT) match low-output moving-coil pickups to standard phono preamps. Jensen’s extended frequency response and time accuracy produces legendary sonic transparency while Faraday and double magnetic shields gives them immunity to hum and RF interference. Models available for 3 ohm to 45 ohm pickups. Wire Lead - Standard wire
- [Client List](https://www.jensen-transformers.com/client-list/) - The following is a partial list of customers who have bought products from Jensen Transformers. It no way implies any endorsement of Jensen products by the companies and/or individuals listed here 20th Century Fox 3M A Designs A&M Records ABC - American Broadcast Corp ABC News Adamson Systems Aguilar Amplification Alaska Aerospace Corp. Alembic Guitars
- [Direct Box](https://www.jensen-transformers.com/transformers/direct-box/) - 'Direct Box' Transformer Selector Guide These high-ratio step-down transformers (line-level in, mic-level out) deliver extended low-frequency and Bessel-tailored high-frequency responses, resulting in ultra-low time-domain distortion (DLP). They also use Jensen-pioneered multiple Faraday shields for unmatched immunity to hum, buzz, and RF interference. These noise problems can plague systems where guitars and stage instruments (keyboards, samplers, computer,
- [Mic Split](https://www.jensen-transformers.com/transformers/mic-split/) - Microphone 'Splitter' Transformer Selector Guide These transformers offer not only extended low-frequency and Bessel-tailored high-frequency responses, resulting in ultra-low time-domain distortion (DLP), but use Jensen-pioneered multiple Faraday shields for unmatched immunity to hum, buzz, and RF interference. These noise problems can plague systems where distances between signal destinations is large and abnormally high ground-voltage-differences are
- [Mic Input](https://www.jensen-transformers.com/transformers/mic-input/) - Microphone Input Transformer Selector Guide Jensen mic input transformers are legendary for their sonic transparency. All use internal Faraday shielding to virtually eliminate hum, buzz, and RF interference and are enclosed in MuMETAL® magnetic shielding cans to reduce hum caused by nearby magnetic fields. A range of step-up turns ratios is offered to optimize noise
- [Warranty](https://www.jensen-transformers.com/warranty/) - ISO-MAX® and TRANSFORMER PRODUCTS WARRANTY For a period of 1 YEAR after purchase, Jensen Transformers, Inc. will, free of charge, repair or replace any part of an ISOMAX® product that fails due to defective materials or workmanship. For a period of 20 YEARS after purchase, Jensen Transformers, Inc. will, free of charge, repair or
- [Forgot Password](https://www.jensen-transformers.com/forgot-password/) - [pie_register_forgot_password]
- [Iso-Max FAQs](https://www.jensen-transformers.com/iso-max-faqs/)
- [Transformer FAQs](https://www.jensen-transformers.com/transformer-faqs/)
- [Schematics](https://www.jensen-transformers.com/schematics/) - The following schematics are free of charge and available for your sole use by registering as a user. We ask that you do not distribute these without prior consent from Jensen Transformers Inc. We thank you for your support and understanding. Mic Preamp | Line Input | Line output | General Interface | Musical Instrument
- [Home Theater](https://www.jensen-transformers.com/home-theater/) - There is nothing more frustrating than finally putting all the pieces of your home theater together, turning it on to watch your favorite movie and... all of a sudden, you are confronted with a terrible hum. In home audio systems, this is typically caused by the cable TV connection, less than ideal electrical wiring or
- [Help Selecting](https://www.jensen-transformers.com/transformers/help-selecting/) - Basics Jensen transformers improve signal quality by removing hum, buzz and interference signals of other types (such as radio frequency interference) from the audio signal. The Bessel low pass filtering effect also removes ultrasonic distortion products generated by previous amplification stages from the audio signal. These ultrasonic distortion products create additional intermodulation distortion products when
- [Transformers](https://www.jensen-transformers.com/transformers/) - Founded in 1974 Jensen Transformers, Inc., is a manufacturer and developer of high performance audio transformers. Tens of thousands of Jensen transformers are in use today throughout the world, and maintain a flawless reputation for superior quality and reliability. Deane Jensen, our founder, embarked on a quest in the early '70's to unravel the shortcomings
- [Application Notes](https://www.jensen-transformers.com/application-notes/) - Free resources, includes engineering tips, answers to common questions, and much more.
- [Resources](https://www.jensen-transformers.com/resources/)
- [Whitepapers](https://www.jensen-transformers.com/whitepapers/)
- [Logout](https://www.jensen-transformers.com/logout/) - [logout]
- [Pro Audio](https://www.jensen-transformers.com/pro-audio/) - Jensen Iso-Max pro-isolators present a complete range of passive, hum-eliminating solutions for balanced and unbalanced signals where absolute audio performance is required. These feature ultra-wide frequency response, exceptional signal handling (up to +24dB) and immunity to external electromagnetic fields. Built into an easy-to-install flanged outer shell, each model comes equipped with standard connectors or may
- [Video](https://www.jensen-transformers.com/videos/) - Jensen Iso-Max video isolators are designed to deliver exceptionally accurate video as they eliminate troublesome hum bars without signal degradation or drop-outs. In other words, unlike baluns that are plagued with ‘notches and dips’ can drop channels or blur the video image, Jensen video isolators produce a ruler flat response across the intended bandwidth to

## FAQs

- [What is CMRR?](https://www.jensen-transformers.com/qa_faqs/what-is-cmmr/) - The common mode rejection ratio spec is used to measure the transformer or circuit’s ability to reject noise. A CMRR of 85dB would mean that the transformer will reduce noise by 85 dB at a given frequency, usually 60 Hz.
- [What makes line input transformer preferable over line output transformers?](https://www.jensen-transformers.com/qa_faqs/what-makes-line-input-transformer-preferable-over-line-output-transformers/) - All ISO-MAX® isolators with an “I” in the model number (CI-2RR and PI-2XX, for example) use transformers with internal Faraday shields. Faraday shields, sometimes called “electrostatic” shields, improve rejection of high frequency buzz by a factor of 100 to 1,000 (40 dB to 60 dB) over transformers without them.
- [When are line output transformers beneficial?](https://www.jensen-transformers.com/qa_faqs/when-are-line-output-transformers-beneficial/) - ISO-MAX isolators with an “O” in the model number (PO-2XR, for example) are most useful when driven by a balanced equipment output and a good choice when driving long cables. The isolator output can then feed either balanced or unbalanced equipment inputs with no risk of damage or misbehavior in the driving equipment, regardless of what
- [Is insertion loss or loading a problem when driving the input with an active source?](https://www.jensen-transformers.com/qa_faqs/is-insertion-loss-or-loading-a-problem-when-driving-the-input-with-an-active-source/) - Most ISO-MAX isolators use 1:1 transformers that simply reflect the load connected to their output back to the driving source, so there is no additional “loading” of the source. Because the copper wire used in transformer has resistance, a small signal loss is unavoidable. When used as directed, this “insertion loss” is generally under 1 dB
- [Why is the cable length so important to consider](https://www.jensen-transformers.com/qa_faqs/why-is-the-cable-length-so-important-to-consider/) - There is no “free lunch” in transformer design. In ISO-MAX models with an “I” in the model number (CI-2RR and PI-2XX, for example), the Faraday shields responsible for extremely high noise rejection unavoidably makes their output sensitive to capacitive loading. Since the cable that connects isolator output to equipment input is the main source of capacitance,
- [What is the benefit of having a transformer at the output of a summing mixer?](https://www.jensen-transformers.com/qa_faqs/what-is-the-benefit-of-having-a-transformer-at-the-output-of-a-summing-mixer/) - If maximum elimination of 'ground loop' buzz is the goal, an input type isolator located at the receive end of an interface cable is always the preferred solution. However, if the signal destination is unknown or may change with setup, an ISO-MAX isolator with an “O” in the model number (PO-2XR, for example) may be useful
- [What is MuMETAL®?](https://www.jensen-transformers.com/qa_faqs/what-is-MuMETAL®/) - MuMETAL® is actually a trademark of Magnetic Shield Corporation. It is a metal alloy consisting of 77% nickel, 16% iron, 5% copper, and 2% molybdenum. It has extremely high magnetic permeability of about 100,000. Magnetic permeability is a measure of how easily magnetic fields flow through it, compared to air with a value of 1
- [Why are Jensen transformers made to manage signals below 10Hz or below our hearing range?](https://www.jensen-transformers.com/qa_faqs/why-are-jensen-transformers-made-to-manage-signals-below-10hz-or-below-our-hearing-range/) - This is a matter of phase distortion. Simply put, every transformer (and any other signal processor, unless DC-coupled) behaves as a 6 dB/octave high-pass filter. This filter creates phase distortion that’s significant at about 10 times its 'cutoff' (−3 dB) frequency and gets worse as frequency decreases. Therefore, to avoid significant phase distortion at 20
- [Why is the performance of a transformer at 1kHz meaningless?](https://www.jensen-transformers.com/qa_faqs/why-is-the-performance-of-a-transformer-at-1khz-meaningless/) - The intensity of the magnetic field in a transformer increases as frequency decreases and signal level increases. Therefore, the most demanding job for the transformer is to pass a high-level, low-frequency signal with acceptably low distortion. For example, if too little core material is used, the transformer may magnetically 'saturate' (producing very high distortion) at
- [What is the benefit of using a step-up transformer in a phono preamplifier?](https://www.jensen-transformers.com/qa_faqs/what-is-the-benefit-of-using-a-step-up-transformer-in-a-phono-preamplifier/) - The most common phono 'pickup' or 'cartridge' is the moving-magnet type and the vast majority of phono preamplifiers are designed for their relatively high output voltage ... generally about 5 millivolts (at standard stylus velocity of 5 cm/sec). However, extremely high-performance moving-coil pickups are preferred by many audiophiles. These pickups have extremely low output voltage
- [What is the benefit of having a transformer at the input of a mic channel?](https://www.jensen-transformers.com/qa_faqs/what-is-the-benefit-of-having-a-transformer-at-the-input-of-a-mic-channel/) - A major benefit of Faraday shielding is high attenuation of RFI (radio frequency interference). ISO-MAX microphone isolators and “splitters” (model MS-2XX, for example) have outstanding rejection of RFI, especially at troublesome AM radio broadcast frequencies.
- [Can a transformer help with DC offset clicking and popping when switching audio?](https://www.jensen-transformers.com/qa_faqs/can-a-transformer-help-with-dc-offset-clicking-and-popping-when-switching-audio/) - The laws of physics dictate that a transformer cannot pass DC and, in fact, this guarantees that there is no “offset” voltage at its output. Such offsets are one of the main causes of clicks and pops when audio signals are switched. When inserted at the appropriate point in the signal chain, an ISO-MAX isolator can
- [Can you explain the high frequency Bessel response curve?](https://www.jensen-transformers.com/qa_faqs/can-you-explain-the-high-frequency-bessel-response-curve/) - All transformers inherently behave as low-pass filters. The characteristics of a filter depends on its type or “alignment.” A Bessel filter is optimized for uniform time-domain response. This means all the overtones of a musical instrument stay properly time-aligned, preserving the instrument’s true timbre. In square-wave tests, a Bessel response is free of overshoot or
- [How does a basic transformer work?](https://www.jensen-transformers.com/qa_faqs/how-does-a-basic-transformer-work/) - A basic transformer is made up of two coils, a primary and a secondary and a core. When an electrical current flows into the primary coil, it generates a magnetic field. The field is concentrated via the core which in turn excites the secondary coil and regenerates electrical current at the output. This creates a
- [Why do so few transformer companies publish their specifications?](https://www.jensen-transformers.com/qa_faqs/why-do-so-few-transformer-companies-publish-their-specifications/) - Good sounding transformers are extremely difficult to manufacture. The sound or performance is relative to the frequency response, phase shift and distortion. Jensen is one of the only companies that actually publishes all of the specifications so that a serious circuit designer can make engineering decisions based on the true values, not merely posted specifications.
- [What are the important factors in comparing transformers? ](https://www.jensen-transformers.com/qa_faqs/what-are-the-important-factors-in-comparing-transformers/) - There are several factors one should consider when choosing a transformer. The first is aligning the application with the level handling. This would dictate the distortion spec. Next, one would consider if the transformer is being used for music or for voice. If music, then low frequency content is critical. The musicality of the transformer
- [Why is phase response so important?](https://www.jensen-transformers.com/qa_faqs/why-is-phase-response-so-important/) - Phase deviation is the effect of having certain frequencies be offset from others after the signal passes through the transformer. As phase shifts, the information begins to muddy up and detail is lost. By minimizing phase deviation – particularly at the low end - the all important mid band becomes more solid and transparent.
- [How does Jensen avoid phase problems](https://www.jensen-transformers.com/qa_faqs/how-does-jensen-avoid-phase-problems/) - By employing very precise winding techniques and optimizing the core material by using higher grade 84% nickel alloy and then testing these to ensure the permeability meets Jensen’s stringent requirements.
- [How do transformers distort?](https://www.jensen-transformers.com/qa_faqs/how-do-transformers-distort/) - Unlike electronic circuits that distort when the incoming signal level exceeds the rail voltage or power limits, transformers saturate. The saturation rounds off or smoothes the transients, creating a natural limiting effect that is often referred to as vintage sounding. It is no winder... vintage audio gear generally employ transformers.
- [What is a faraday shield?](https://www.jensen-transformers.com/qa_faqs/what-is-a-faraday-shield/) - A Faraday shield is usually a copper foil that is layered between the primary and secondary coil. It is used to reduce high frequency buzz.
- [Why does Jensen use nickel in their core materials?](https://www.jensen-transformers.com/qa_faqs/why-does-jensen-use-nickel-in-their-core-materials/) - Deane Jensen figured out that the permeability of steel caused severe audio artifacts in transformers, particularly at very low signal levels. Jensen spent years developing a recipe for the types of nickel alloys that are used in Jensen Transformers which along with lamination stacking and winding techniques play a significant part in their construction.
- [How does the permeability of steel compare to nickel alloy?](https://www.jensen-transformers.com/qa_faqs/how-does-steel-compare-to-nickel/) - Steel has a permeability factor of about 100 while MuMETAL® or perm-alloy can reach 200,000.
- [What do you mean by turns-ratio](https://www.jensen-transformers.com/qa_faqs/what-do-you-mean-by-turns-ratio/) - The turns ratio of a transformer describes the number of wire turns on the input versus the number of turns on the output. A 1:1 transformer would have the same number of turns on each coil while a 1:2 transformer would have twice as many on the secondary.

## Products

- [PI-XX](https://www.jensen-transformers.com/product/pi-xx/) - The design begins with an extruded aluminum case that comes standard with gold plated XLR connectors. Plug and play easy to use, this passive interface does not require any power to work. Inside is a high performance Jensen transformer that is able to withstand signal levels to +19 dBu at 20 Hz without discernible distortion.
- [DIN-PB](https://www.jensen-transformers.com/product/din-pb/) - The design begins with a gray molded assembly made from UL94-VO flame retardant Noryl that snaps into place onto a standard 35 mm DIN rail for easy installation in a NEMA enclosure. Connections to and from the module are made via removable screw-down wire terminals. Plug and play easy to use, this passive interface does
- [CI-1RR](https://www.jensen-transformers.com/product/ci-1rr/) - The unbalanced stereo design begins with gold RCA connectors to ensure optimal signal transfer. These are housed in a rugged steel enclosure that is fitted with screw-down flanges for easy installation in racks, under shelves or attached to cabinetry. The magic inside comes from a high performance Jensen Transformer that delivers pristine audio from 10
- [SP-2SX](https://www.jensen-transformers.com/product/sp-2sx/) - The design begins with a rugged flanged enclosure that comes standard with gold plated XLRs and a removable screw-down barrier strip for easy installation in NEMA enclosures and 19” racks. Plug and play easy to use, this passive interface does not require any power to work. Inside are two Jensen high performance transformers that isolate
- [PI-2XX](https://www.jensen-transformers.com/product/pi-2xx/) - The design begins with a rugged flanged enclosure that comes standard with gold plated XLRs and a removable screw-down barrier strip for easy installation in NEMA enclosures. Plug and play easy to use, this passive interface does not require any power to work. Inside are two Jensen high performance transformers that are able to withstand
- [VB-1BB](https://www.jensen-transformers.com/product/vb-1bb/) - Designed for use with standard RG59 type coaxial cable, the VB-1BB combines true 75 Ω BNC connectors with a custom wound transformer to minimize reflection. The unique design delivers an exceptionally linear bandwidth from 10 Hz to 10 MHz with virtually zero insertion loss. Plug and play easy to use, the VB-1BB features a flanged,
- [VRD-1FF](https://www.jensen-transformers.com/product/vrd-1ff/) - Housed in a compact cylinder and designed for use with RG59 or RG6 type cable, this second generation VRD-1FF employs a unique RF engineered solution that delivers a ruler-flat response from 2 Mhz to over 1300 MHz spanning the VHF/FM/UHF and CATV spectrum. The VRD-1FF’s exceptionally linear response prevents frequency dips that can cause channels
- [VB-1RR](https://www.jensen-transformers.com/product/vb-1rr/) - The Iso-Max VB-1RR is a single-channel 75 Ω video isolator for composite (baseband) video that is used to prevent 60 cycle ‘hum bars’ even where ground voltage differences are very large such as in surveillance video systems, night clubs, video walls, broadcast stations, and industrial plants. Designed for use with standard RG59 type coaxial cable,
- [DIN-2MS-2P](https://www.jensen-transformers.com/product/din-2ms-2p/) - The design begins with a gray molded assembly made from UL94-VO flame retardant Noryl that snaps into place onto a standard 35 mm DIN rail for easy installation in a NEMA enclosure. Connections to and from the module are made via removable screw-down wire terminals. Plug and play easy to use, this passive interface does
- [DIN-MS-2P](https://www.jensen-transformers.com/product/din-ms-2p/) - The design begins with a gray molded assembly made from UL94-VO flame retardant Noryl that snaps into place onto a standard 35 mm DIN rail for easy installation in a NEMA enclosure. Connections to and from the module are made via removable screw-down wire terminals. Plug and play easy to use, this passive interface does
- [DIN-2LI](https://www.jensen-transformers.com/product/din-2li/) - The design begins with a gray molded assembly made from UL94-VO flame retardant Noryl that snaps into place onto a standard 35 mm DIN rail for easy installation in a NEMA enclosure. Connections to and from the module are made via removable screw-down wire terminals. Plug and play easy to use, this passive interface does
- [DIN-LI](https://www.jensen-transformers.com/product/din-li/) - The design begins with 35 mm DIN rail molded in gray UL94-VO flame retardant Noryl format that snaps into place for easy installation in NEMA enclosures via removable screw-down wire terminal. Plug and play easy to use, this passive interface does not require any power to work. Inside is a Jensen high performance transformer that
- [CI-RJ2R](https://www.jensen-transformers.com/product/ci-rj2r/) - Sold as a ‘transmit and receive’ set, the design begins with two rugged flanged steel enclosures for easy mounting under a desk or inside a rack or NEMA enclosure. Each end is equipped with RCA inputs and outputs, with a standard Ethernet RJ45 type connectors in between. One merely connects the source and destination devices
- [SUB-2RR](https://www.jensen-transformers.com/product/sub-2rr/) - Inside, a specially designed Jensen audio transformer with extended sub-sonic response delivers powerful and articulated bass for maximum impact. Even when being subjected to extremes, the SUB-2RR is able to gracefully handle low frequencies down to 20 Hz with less than 0.01% distortion and less than 1 dB of phase shift. And with better than
- [CI-2RR](https://www.jensen-transformers.com/product/ci-2rr/) - The unbalanced stereo design begins with gold RCA connectors to ensure optimal signal transfer. These are housed in a rugged steel enclosure that is fitted with screw-down flanges for easy installation in racks, under shelves or attached to cabinetry. The magic inside comes from two high performance Jensen Transformers that deliver pristine audio from 10
- [CI-2MINI](https://www.jensen-transformers.com/product/ci-2mini/) - Designed specifically to eliminate the hum and buzz that is often encountered when connecting the audio output from a consumer device to another. This stereo isolator features standard 3.5 mm input and output connectors for easy interfacing with headphone and ear-bud outputs. Inside are two world-class Jensen audio transformers that deliver a ruler flat response
- [SUB-1RR](https://www.jensen-transformers.com/product/sub-1rr/) - Inside, a specially designed Jensen audio transformer with extended sub sonic response delivers powerful and articulated bass for maximum impact. Even when being subjected to extremes, the SUB-1RR is able to gracefully handle low frequencies down to 20 Hz with less than 0.01% distortion and less than 1° of phase shift. And with better than

## Categories

- [Uncategorized](https://www.jensen-transformers.com/category/uncategorized/)
- [Featured News](https://www.jensen-transformers.com/category/featured-news/)

## FAQ Categories

- [Transformers](https://www.jensen-transformers.com/faq-category/transformer/)
- [Iso-Max](https://www.jensen-transformers.com/faq-category/iso-max-3/)

## Industry Types

- [Audiophile](https://www.jensen-transformers.com/industry_type/audiophile/) - The following products are popular with the Audiophile community.
- [Broadcast](https://www.jensen-transformers.com/industry_type/broadcast/) - The following products are popular with radio and TV broadcasters. Click more at the bottom of the page for a wider selection.
- [Pro Touring](https://www.jensen-transformers.com/industry_type/pro-touring/) - The following products are popular with the Pro Touring industry.
- [Recording](https://www.jensen-transformers.com/industry_type/recording/) - The following products are popular with the audio recording industry.
- [Home Theatre](https://www.jensen-transformers.com/industry_type/home-theatre/) - There is nothing more frustrating than finally putting all the pieces of your home theater together, turning it on to watch your favorite movie and… all of a sudden, you are confronted with a terrible hum. In home audio systems, this is typically caused by the cable TV connection, less than ideal electrical wiring or voltage differentials known as DC offsets that often occur between two pieces of equipment. You can spend hours hopelessly trouble-shooting or simply insert an Iso-Max ground hum eliminator into the signal path to solve the problem. With a Jensen transformer inside, you can be sure that the signal quality will be maintained without distortion, phase shift or artefact of any kind.
- [AV Install](https://www.jensen-transformers.com/industry_type/av-install/)

## Product Details

- [Home Theater Filter](https://www.jensen-transformers.com/product-type/home-theater-filter/)
- [Input](https://www.jensen-transformers.com/product-type/input/) - Input device
- [Isolator](https://www.jensen-transformers.com/product-type/isolator/) - Isolator units
- [Pro Audio Details](https://www.jensen-transformers.com/product-type/pro-audio-details/) - Pro Audio Details
- [Home Theater Details](https://www.jensen-transformers.com/product-type/home-theater-details/) - Home Audio Details
- [Video Details](https://www.jensen-transformers.com/product-type/video-details/) - Video Details
- [Interface](https://www.jensen-transformers.com/product-type/interface/) - Audio interface
- [Din module](https://www.jensen-transformers.com/product-type/din-module/) - Din module format to fit on DIN 32 mm rails
- [Balanced](https://www.jensen-transformers.com/product-type/balanced/) - balanced signal
- [Input](https://www.jensen-transformers.com/product-type/input-din-module/) - input
- [Universal](https://www.jensen-transformers.com/product-type/universal-din-module/) - Universal DIN module
- [Distro](https://www.jensen-transformers.com/product-type/distro-din-module/) - Distribution DIN module
- [Audiophile Isolators](https://www.jensen-transformers.com/product-type/ap-isolators/)
- [Subwoofer](https://www.jensen-transformers.com/product-type/ap-subwoofer/)
- [Balanced](https://www.jensen-transformers.com/product-type/ap-balanced/)
- [Un-balanced](https://www.jensen-transformers.com/product-type/ap-un-balanced/)
- [Video](https://www.jensen-transformers.com/product-type/home-theater-video/)
- [Home Theater Isolator](https://www.jensen-transformers.com/product-type/ht-isolator/)
- [Home Theater Subwoofer](https://www.jensen-transformers.com/product-type/ht-subwoofer/)
- [Audiophile](https://www.jensen-transformers.com/product-type/audiophile/)

## Product Lines

- [Iso-Max](https://www.jensen-transformers.com/product_line/iso-max-2/) - Iso-Max product line

## Main Categories

- [Pro Audio](https://www.jensen-transformers.com/main_categories/pro-audio/)
- [Video](https://www.jensen-transformers.com/main_categories/video/)
- [Contact](https://www.jensen-transformers.com/main_categories/contact/)
- [Home Theater](https://www.jensen-transformers.com/main_categories/home-theater/)
- [OEM Transformers](https://www.jensen-transformers.com/main_categories/oem-transformers/)

## Schematics

- [Mic Preamp](https://www.jensen-transformers.com/schematics/mic-preamp/) - Mic Preamp Application Schematics
- [line Input](https://www.jensen-transformers.com/schematics/line-input-2/)
- [Line Output](https://www.jensen-transformers.com/schematics/line-output/)
- [General Interface](https://www.jensen-transformers.com/schematics/general-interface/)
- [Musical Instrument](https://www.jensen-transformers.com/schematics/musical-instrument/)
- [Equipment Upgrade](https://www.jensen-transformers.com/schematics/equipment-upgrade/)
- [Miscellaneous](https://www.jensen-transformers.com/schematics/miscellaneous/)

## White Papers

- [Application Papers](https://www.jensen-transformers.com/white_papers/application-papers/)

## Transformer Types

- [Mic Input](https://www.jensen-transformers.com/transformer-type/mic-input/)
- [Mic Split](https://www.jensen-transformers.com/transformer-type/mic-split/) - All have a 30dB Magnetic Shield can and a single Faraday Shield (except * which have two shields)
- [Line Input](https://www.jensen-transformers.com/transformer-type/line-input/)
- [Standard Wide Bandwidth](https://www.jensen-transformers.com/transformer-type/standard-wide-bandwidth/)
- [Ultra-High performance Step-down](https://www.jensen-transformers.com/transformer-type/ultra-high-performance-step-down/)
- [Ultra-Low Frequency](https://www.jensen-transformers.com/transformer-type/ultra-low-frequency/)
- [600 Ohm to 600 Ohm Repeat Coil](https://www.jensen-transformers.com/transformer-type/600-ohm-to-600-ohm-repeat-coil/)
- [General Purpose 1:1 Bifilar](https://www.jensen-transformers.com/transformer-type/general-purpose-11-bifilar/) - Unless otherwise noted, all are multifilar construction with either 50% (“L” types) or 80% (“M” types) nickel cores. Because they have no Faraday shield, these types are not recommended as input transformers. Characterized below for 0 Ohm source and 600 Ohm load.
- [Vacuum Tube drivers](https://www.jensen-transformers.com/transformer-type/vacuum-tube-drivers/)
- [Special Purpose](https://www.jensen-transformers.com/transformer-type/special-purpose/)
- [Inductors and Load Isolators](https://www.jensen-transformers.com/transformer-type/inductors-and-load-isolators/)
- [Direct Box Transformer](https://www.jensen-transformers.com/transformer-type/direct-box-transformer/)
- [Moving Coil](https://www.jensen-transformers.com/transformer-type/moving-coil-transformers/)
- [PCB](https://www.jensen-transformers.com/transformer-type/pcb/) - Printed Circuit Mount
- [Wire Lead](https://www.jensen-transformers.com/transformer-type/wire-lead/) - Wire Lead
- [Line Output](https://www.jensen-transformers.com/transformer-type/line-output/)

## Accessory Type

- [Jensen Accessory](https://www.jensen-transformers.com/accessory_type/jensen-accessory/)
- [din-accessories](https://www.jensen-transformers.com/accessory_type/din-accessories/)
- [Video Acessory](https://www.jensen-transformers.com/accessory_type/video-accessory/)