JT-11P-1

Line Input Transformer Selector Guide

For 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 electrically-hostile environments but transformers are unaffected. The controlled high-frequency response removes ultra-sonic “hard digital edge” artifacts from signals, resulting in a unmatched sonic clarity. Each transformer is enclosed in a mu-metal magnetic shielding can to reduce hum caused by any nearby magnetic fields. Several turns ratios are offered to optimize noise performance with various input stage designs. Extremely high dynamic range can be delivered, up to 140 dB, in real-world system environments.

 

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Standard Wide Bandwidth Line Input Transformers

Model
Data sheet PDF
Impedance
Ratio
Turns
Ratio
Max Input
@ 20 Hz
THD
@ 20Hz
Freq Response
20Hz/20kHz
Price
USD
4+
Units
12+
Units
 
JT-11P-1BN Line input transformer ideal for balancing any high impedance unbalanced input. Octal plug-in package wired for Altec style inputs. Request
10k:10k 1:1.00 +20 dBu 0.025% -0.04 dB / -0.32 dB $107.66 $97.88 $91.05
JT-11P-1HPC Line input transformer with 1:1 ratio, ideal for balancing any high impedance unbalanced input. PC board mount. Request
10k:10k 1:1.00 +19 dBu 0.040% -0.03 dB / -0.20 dB $70.00 $63.65 $59.20
JT-11P4-1 JT-11P4-1TB Line input transformer with 1:1.414 step-up ratio, ideal for balancing a vacuum tube input stage. Request
10k:20k 1:1.4 +16 dBu 0.025% -0.05 dB / -0.05 dB $71.10 $64.65 $60.13
JT-11P-1 JT-11P-1TB Line input transformer with 1:1 ratio, ideal for balancing any high impedance unbalanced input. Request
10k:10k 1:1.00 +20 dBu 0.025% -0.04 dB / -0.05 dB $70.00 $63.65 $59.20
Model # Description Price USD 4+ units 12+ units Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Freq Resp 20Hz / 20kHz
JT-11P-1BN Line input transformer ideal for balancing any high impedance unbalanced input. Octal plug-in package wired for Altec style inputs. $107.66 $97.88 $91.05 10k:10k 1:1.00 +20 dBu 0.025% -0.04 dB / -0.32 dB Request
JT-11P-1HPC Line input transformer with 1:1 ratio, ideal for balancing any high impedance unbalanced input. PC board mount. $70.00 $63.65 $59.20 10k:10k 1:1.00 +19 dBu 0.040% -0.03 dB / -0.20 dB Request
JT-11P4-1 JT-11P4-1TB Line input transformer with 1:1.414 step-up ratio, ideal for balancing a vacuum tube input stage. $71.10 $64.65 $60.13 10k:20k 1:1.4 +16 dBu 0.025% -0.05 dB / -0.05 dB Request
JT-11P-1 JT-11P-1TB Line input transformer with 1:1 ratio, ideal for balancing any high impedance unbalanced input. $70.00 $63.65 $59.20 10k:10k 1:1.00 +20 dBu 0.025% -0.04 dB / -0.05 dB Request

Ultra-high Performance Step-down Line Input Transformer

Model
Data sheet PDF
Impedance
Ratio
Turns
Ratio
Max Input
@ 20 Hz
THD
@ 20Hz
Freq Response
20Hz/20kHz
Price
USD
4+
Units
12+
Units
 
JT-6110K-B JT-6110K-BTB Line input transformer, 4:1 or 8:1 step-down ratio, higher level handling for "balanced bridging" inputs. Request
36k:2.2k / 10k:600 4:1 +26 dBu 0.009% -0.06 dB / -0.08 dB $100.40 $91.28 $84.91
JT-10KB-D JT-10KB-DPC JT-10KB-DTB Line input transformer, 4:1 step-down ratio, ideal for "balanced bridging" inputs or "Pro to Consumer" level conversion. Request
40k:2.4k 4:1 +21 dBu 0.015% -0.04 dB / -0.03 dB $70.25 $63.87 $59.41
Model # Description Price USD 4+ units 12+ units Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Freq Resp 20Hz / 20kHz
JT-6110K-B JT-6110K-BTB Line input transformer, 4:1 or 8:1 step-down ratio, higher level handling for "balanced bridging" inputs. $100.40 $91.28 $84.91 36k:2.2k / 10k:600 4:1 +26 dBu 0.009% -0.06 dB / -0.08 dB Request
JT-10KB-D JT-10KB-DPC JT-10KB-DTB Line input transformer, 4:1 step-down ratio, ideal for "balanced bridging" inputs or "Pro to Consumer" level conversion. $70.25 $63.87 $59.41 40k:2.4k 4:1 +21 dBu 0.015% -0.04 dB / -0.03 dB Request

Ultra-low Frequency Line Input Transformer

Model
Data sheet PDF
Impedance
Ratio
Turns
Ratio
Max Input
@ 20 Hz
THD
@ 20Hz
Freq Response
20Hz/20kHz
Price
USD
4+
Units
12+
Units
 
JT-112P-2HPC Ultra-low frequency line input transformer, ideal for subwoofer audio amplifier input isolation. PC board mount. Request
39k:47k 1:1.10 +20 dBu 0.01% -0.04 dB / -0.05 dB $70.00 $63.65 $59.20
Model # Description Price USD 4+ units 12+ units Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Freq Resp 20Hz / 20kHz
JT-112P-2HPC Ultra-low frequency line input transformer, ideal for subwoofer audio amplifier input isolation. PC board mount. $70.00 $63.65 $59.20 39k:47k 1:1.10 +20 dBu 0.01% -0.04 dB / -0.05 dB Request

600 Ohm to 600 Ohm repeat coil Transformer

Model
Data sheet PDF
Impedance
Ratio
Turns
Ratio
Max Input
@ 20 Hz
THD
@ 20Hz
Freq Response
20Hz/20kHz
Price
USD
4+
Units
12+
Units
 
JT-11SSP-7MPC Line input transformer, 1:1 ratio split winding "repeat coil", ideal for balancing any low impedance input. PC board mount. Request
600:600 1:1 +21 dBu 0.025% -0.05 dB / -0.01 dB $137.46 $124.98 $116.25
JT-11SSP-6M Line input transformer, 1:1 ratio split winding "repeat coil", ideal for balancing any low impedance input circuit. Request
600:600 1:1 +19 dBu 0.040% -0.05 dB / -0.01 dB $132.70 $120.65 $112.23
Model # Description Price USD 4+ units 12+ units Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Freq Resp 20Hz / 20kHz
JT-11SSP-7MPC Line input transformer, 1:1 ratio split winding "repeat coil", ideal for balancing any low impedance input. PC board mount. $137.46 $124.98 $116.25 600:600 1:1 +21 dBu 0.025% -0.05 dB / -0.01 dB Request
JT-11SSP-6M Line input transformer, 1:1 ratio split winding "repeat coil", ideal for balancing any low impedance input circuit. $132.70 $120.65 $112.23 600:600 1:1 +19 dBu 0.040% -0.05 dB / -0.01 dB Request

 

Transformer Styles

wire-lead

Wire Lead - Standard wire termination with retainer clamp

pcb-mount

PC Mount - For direct soldering to printed circuit boards

threaded-bushing

Bushing - Mounts using threaded 3/8″ bushing with nut

 

 

 

 

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