CI-2MINI PC audio ground isolator

199.99 Request

The Iso•Max CI-2MINI is a passive two channel audio ground isolator designed to eliminate hum and buzz caused by ground loops in the most demanding audio systems.

  • Eliminates hum and buzz caused by ground loops
  • Extended frequency response from 10 Hz to 40 kHz
  • Less than 2° phase deviation at 20 Hz
  • Plug and play easy to use, no power required

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 from 10 Hz to 40 kHz and are able to withstand high output signals to +19 dBu without distortion. Rugged flange-mount design discretely mounts under a shelf or stereo stand. Passive design, does not require power. 

Applications

IPOD to PA system

Connect your iPod or cell phone to a PA system for a buzz-free connection. Use a standard 3.5 mm mini TRS cable and a 3.5 mm mini TRS to XLR adaptor cable to feed your audio system. Great sound is delivered without noise!

Laptop to PA system

Use your laptop as a music source to send your audio tracks to the PA system without noise. Connect from the laptop to the CI-2MINI using standard 3.5 mm mini TRS cable and them use a 3.5 mm mini TRS adaptor to feed your audio system.

Laptop to HI-FI system

Send your playlist to your hi-fi system using your laptop as a music source. Connect from the laptop to the CI-2MINI using standard 3.5 mm mini TRS and a 3.5 mm mini TRS to RCA adaptor to feed you audio system. The CI-2MINI delivers without buzz or hum.

Specifications

All levels are input unless noted, +4 dBu = 1.23 V RMS

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Input impedance, Zi 1 kHz, +4 dBu, test circuit 1 47.0 kΩ 48.6 kΩ 50.0 kΩ
Insertion loss 1 kHz, +4 dBu, test circuit 1   0.82 dB 1.0 dB
Magnitude response, ref 1 kHz 20 Hz, +4 dBu, test circuit 1 -0.15 dB -0.03 dB ±0.0 dB
Magnitude response, ref 1 kHz 20 kHz, +4 dBu, test circuit 1 -1.0dB -0.70 dB ±0.0 dB
Deviation from linear phase (DLP) 20 Hz to 20 kHz, +4 dBu, test circuit 1   +1.4/-0° ±2.0°
Distortion (THD) 1 kHz, +4 dBu, test circuit 1   <0.001%  
Distortion (THD) 20 Hz, +4 dBu, test circuit 1   0.04% 0.10%
Maximum 20 Hz input level 1% THD, test circuit 1 +17 dBu +19 dBu  
Common – mode rejection ratio (CMRR) 600 Ω balanced / unbalanced source 60 Hz, test circuit 2   95 dB  
Common – mode rejection ratio (CMRR) 600 Ω balanced / unbalanced source 3 kHz, test circuit 2 85dB 85 dB  
Output impedance, Zo 1 kHz, test circuit 1   4.65 kΩ  
Allowable source impedance (output impedance of device driving the ISO-MAX input) 0 600 Ω 2 kΩ
Allowable load impedance (input impedance of device loading the ISO-MAX output) 10 kΩ 47 kΩ  ∞
Allowable load capacitance (cable & input capacitance loading the ISO-MAX output) 0 50 pF 100 pF
Optimal cable length input   3 m (10’) 8 m (26’)
Optimal cable length output   1 m (3’) 3 m (10’)
Temperature range operation or storage 0°C   70°C
Input to Output Voltage Difference* input to output shield or either shield to chassis, 60 Hz     24 V RMS 34 V peak

Graphs

Phase Distortion (DLP)
Frequency Response
THD vs Level at Low Frequencies
THD vs Frequency at Various Levels

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