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Jensen Transformers Products

Founded in 1974, Jensen Transformers, Inc., is a manufacturer and developer of high performance audio and video transformers.

Their slogan, "Bringing Science to Sound", is not used lightly.  Research and development is performed on-site in a state-of-the-art laboratory.  Jensen Transformers' engineers use some of the most sophisticated computer aided design tools available to develop their line of industry-leading hum and noise isolation products.

Strict quality controls are maintained over every facet of production from raw materials through final test to ensure that Jensen products are the best available.  Each transformer is rigorously tested both before and after encapsulation.

With inferior products coming from all over the world, we think it is a genuine treasure to find a company like Jensen Transformers, actually designing and manufacturing some of the finest products in the world, right here in the USA, and we are proud to be able to offer their products.

NOTE: If you're not sure which model to choose, please check out our Jensen Transformers Application Guide.

Jensen Transformers Products

ISO-MAX Isolators

Jensen Transformers CI-RJ2R-SET Stereo CAT-5 Audio Baluns

Jensen Transformers CI-RJ2R Stereo CAT-5 Audio Balun Set - New!

Jensen Transformers CI-RJ2R-T / CI-RJ2R-R Stereo CAT-5 Audio Baluns provide an elegant way to extend audiophile-quality analog stereo audio signals up to 350 using twisted-pair cabling such as Cat-5 or Cat-6.

Jensen Transformers SC-2NR ISO-MAX Stereo Speaker to Line Converter with Ground Loops Isolation

Jensen Transformers SC-2NR Stereo Speaker to Line Audio Converter - New!

Jensen Transformers' SC-2NR Stereo Speaker to Line Audio Converter is audiophile-grade device that provides an elegant way to convert speaker-level audio to line-level audio.  Terminal strips inputs and RCA output connectors.

Jensen Transformers CI-RJ2R Stereo CAT-5 Audio Baluns

Jensen Transformers SP-2SX Stereo Speaker to Line Audio Converter - New!

Jensen Transformers' SP-2SX Stereo Speaker to Line Audio Converter provides audiophile-grade conversion of speaker-level audio to Pro-style XLR balanced line-level audio outputs.

Jensen Transformers CI-1RR Single Channel Audio Isolator

Jensen Transformers CI-1RR Single-Channel Audio Isolator

This audiophile-quality device not only eliminates hum and buzz, but also enhances audio quality by reducing spectral contamination due to ultrasonic and RF interference.

Jensen Transformers CI-2RR Stereo Audio Isolator

Jensen Transformers CI-2RR Stereo Audio Isolator

All of the advantages of the CI-1RR (above), but with two channels.  Perfect for stereo applications.

Jensen Transformers CI-2MINI Stereo Audio Isolator

Jensen Transformers CI-2MINI Stereo Audio Isolator

Eliminates hum and buzz when connecting computers, laptops, iPods, MP3 players and other 3.5mm mini-phone equipped sources to stereo and A/V systems.

Jensen Transformers MC-2RR Moving Coil Step-Up Transfromer

Jensen Transformers MC-2RR Moving Coil Audio Step-Up Transformer

Jensen's audiophile-quality transformer provides essential gain while isolating noise. Use to interconnect moving-Coil phono cartridges in the finest audio systems.

Jensen Transformers SUB-1RR Subwoofer Audio Isolator

Jensen Transformers SUB-1RR Subwoofer/LFE Audio Isolator

Eliminates sub-woofer hum caused by ground differences between equipment.  Designed specifically for sub-woofer amplifier isolation in Home Theater and Automotive applications

Jensen Transformers SUB-2RR Subwoofer Audio Isolator

Jensen Transformers SUB-2RR 2-Channel Subwoofer/LFE Audio Isolator

Similar to the model above except that it can handle two audio channels, the SUB-2RR eliminates sub-woofer hum caused by ground differences between equipment.  Designed specifically for sub-woofer amplifier isolation in Home Theater and Automotive applications

Jensen Transformers DM2-2XX Stereo Line Output Isolator, 1:1 Output Ratio

Jensen Transformers PO-2XX Stereo Line Output Isolator, 1:1 Output Ratio

Allows any type of output driver to be connected to either balanced or unbalanced inputs without causing loading or instability problems.  Standard configuration is XLR / XLR, but you may also choose any combination of XLR, RCA, BNC, or Phone connectors.
(formerly DM2-2XX)

Jensen Transformers PO-2RP Stereo Line Output Isolator, 1:1 Output Ratio

Jensen Transformers PO-2RP Stereo Line Output Isolator, 1:1 Output Ratio

Electrically identical to the PO-2XX above, but with RCA input connectors / 1/4-inch TRS phone output connectors.
(formerly DM2-2RP)

Jensen Transformers PO-2RX Stereo Line Output Isolator, 1:1 Output Ratio

Jensen Transformers PO-2RX Stereo Line Output Isolator, 1:1 Output Ratio

Electrically identical to the PO-2XX above, but with RCA input connectors / XLR output connectors.
(formerly DM2-2RX)

ensen Transformers PB-2XX Balanced XLR Stereo Audio Isolator

Jensen Transformers PB-2XX Balanced XLR Stereo Audio Input / Output Isolator

Powerful 100 dB ground isolation and Faraday shielded windings eliminate hum and noise in XLR to XLR balanced audio connections!

Jensen Transformers PC-2XR Balanced to Unbalanced Audio Converter

Jensen Transformers PC-2XR Balanced to Unbalanced Audio Converter - XLR to RCA

This "Pro to Consumer" converter facilitates a proper connection from balanced audio sources to unbalanced audio equipment, while also providing isolation to eliminate ground loops that can cause hum and noise.

Jensen Transformers PI-2XX Stereo Audio Input Isolator

Jensen Transformers PI-2XX Stereo Audio Input Isolator

Recommended for most all 2-channel applications where a high-impedance line input, such as the line input of a power amp or crossover needs to be isolated.  XLR input connectors / XLR output connectors.

Jensen Transformers PI-2RX Stereo Audio Input Isolator

Jensen Transformers PI-2RX Stereo Audio Input Isolator

Electrically identical to the PI-2XX, but with RCA input connectors / XLR output connectors. Please choose RCA input connectors from the "Select Input Connectors" "drop-down.

Jensen Transformers SUB-2XX Stereo Balanced AUdio Input Isolator

Jensen Transformers SUB-2XX Stereo Balanced Audio Input Isolator - New!

This ISO-MAX is specially designed for low-frequency applications.  It offers common mode rejection of 105 dB at 60 Hz while also helping to eliminate RF interference...features extended low frequency down to 1 Hz and virtually non-existent distortion for hum-free subwoofer hookups.

Jensen Transformers PI-XX Mono Audio Input Isolator

Jensen Transformers PI-XX Single Channel Mono Audio Input Isolator - New!

Recommended for most all single-channel applications where a high-impedance line input, such as the line input of a power amp or crossover needs to be isolated.

Jensen Transformers VB-1BB Baseband Composite Video Isolator

Jensen Transformers VB-1BB Baseband-Composite Video Isolator with BNC Connectors

Eliminates noise bars caused by ground differences between equipment.  Perfect for video surveillance systems!

Jensen Transformers VB-1RR Baseband Composite Video Isolator with RCA Connectors

Jensen Transformers VB-1RR Baseband-Composite Video Isolator with RCA Connectors

Eliminates ground-loop-induced hum and noise bars caused by ground differences between equipment.  Great for video surveillance systems!

Jensen Transformers VBH-1BB Video Ground Corrector

Jensen Transformers VBH-1BB  Video Ground Loop Corrector with BNC Connectors

This single-channel studio-quality isolator clears up video hum bars caused by ground loops!

Jensen Transformers VBH-3RR Component Video Ground Corrector

Jensen Transformers VBH-3RR Component Video Ground Loop Corrector

This studio-quality isolator clears up video hum bars caused by ground loops!  Available with RCA or BNC connectors.

Jensen Transformers VBH-5BB RGBHV Video Ground Corrector

Jensen Transformers VBH-5BB RGBHV Video Ground Loop Corrector with BNC Connectors

This studio-quality isolator clears up RGB / VGA video hum bars in caused by ground loops.

Jensen Transformers VRD-1FF Cable TV Ground Loop Isolator

Jensen Transformers VRD-1FF Cable TV Ground Loop Isolator - Improved Model

Eliminates hum and noise bars caused by ground differences between equipment. Analog.  Digital and Cable Modem Compatible.

Bare Transformers for DIY - In Stock

Jensen Transformers JT-DB-E 12:1 Direct Box Transformer with Wire Leads

Jensen Transformers JT-DB-E - 12:1 "Direct Box" Transformer with Wire Leads

Perfect for coupling guitar pickups, musical instruments and other line level outputs to low impedance microphone inputs. Excellent results when used as an output transformer for tube-type condenser microphones as well.

Jensen Transformers JT-DB-EPC 12:1 Direct Box Transformer

Jensen Transformers JT-DB-EPC - 12:1 "Direct Box" Transformer, PCB Mount

Same transformer as the item above, but for PB Board mounting.  Perfect for coupling guitar pickups, musical instruments and other line level outputs to low impedance microphone inputs. Excellent results when used as an output transformer for tube-type condenser microphones as well.

Jensen Transformers JT-13K7-A 1:5 Microphone Input Step-Up Transformer with clamp-style mount and wire leads

Jensen Transformers JT-13K7-A 1:5 Microphone Input Step-Up Transformer with Clamp-style Mount and Wire Leads

4.1 kΩ secondary source impedance, not only optimizes noise performance of many IC or discrete amplifiers but also offers excellent CMRR as well.

Jensen Transformers JT-13K7-ATB 1:5 Microphone Input Step-Up Transformer with Theaded Bushing Mount and Wire Leads

Jensen Transformers JT-13K7-ATB 1:5 Microphone Input Step-Up Transformer with Threaded Bushing-style Mount and Wire Leads

With its 4.1 kΩ secondary source impedance, this transformer optimizes noise performance of many IC or discrete amplifiers while offering an excellent Common Mode Rejection Ratio as well.

Audio Isolators - Special Order

Microphone Splitters

MSRP: $1500.00

Your Price: $1199.00

Jensen Transformers MS-8N3  8-Channel 3-Way Microphone Splitter

Jensen Transformers MS-8N3 8-Channel 3-Way Microphone Splitter

The Model MS-8N3 is designed to provide 8 Channels of 3 Way microphone splitting with support for phantom powering. Removable, gold plated screw terminal connectors provide simple quick, easy installation and service. High density packaging allows many channels in a compact form factor.

 

 

Features

  • Ruler flat frequency response preserves "Audiophile Quality" signals
  • High-Grade Nickel-Iron-Molybdenum alloy cores for extremely low distortion
  • Individually Faraday shielded windings for maximum R.F. interference rejection
  • High quality gold plated connectors for long term reliability
  • Gold Contact DIP Switches allow for flexibility in grounding configuration

PDF Manual / Datasheet

MSRP: $1250.00

Your Price: $999.99

Jensen Transformers MS-8N2  8-Channel 2-Way Microphone Splitter

Jensen Transformers MS-8N2 8-Channel 2-Way Microphone Splitter

The Model MS-8N2 is designed to provide 8 Channels of 2 Way microphone splitting with support for phantom powering. Removable, gold plated screw terminal connectors provide simple quick, easy installation and service. High density packaging allows many channels in a compact form factor.

 

 

Features

  • Ruler flat frequency response preserves "Audiophile Quality" signals
  • High-Grade Nickel-Iron-Molybdenum alloy cores for extremely low distortion
  • Dual Faraday shielded windings for maximum R.F. interference rejection
  • High quality gold plated connectors for long term reliability
  • Gold Contact DIP Switches allow for flexibility in grounding configuration

PDF Manual / Datasheet

DIN Modules for Pro Audio

  • Convenient DIN Rail Mounting System
  • World Famous Quality Jensen Transformers
  • Removable Screw Terminal Connectors
  • Reliable Gold Plated Connector Pins
  • Built-in Pad and Termination Options
  • Up To 12 Modules on a 3RU Rack Panel
  • Quick Disconnect for Easy Replacement

Line Input Modules

MSRP: $170.00

Your Price: $139.99

Jensen Transformers DIN-LI • 10k to 10k 1:1 Line Input Module

Single channel unit provides isolation at professional line inputs. May be used with any combination of balanced or unbalanced sources and/or inputs.

PDFDatasheet

MSRP: $270.00

Your Price: $219.99

Jensen Transformers DIN-2LI • Dual 10k to 10k 1:1 Line Input Module

Two channel unit provides isolation at professional line inputs. May be used with any combination of balanced or unbalanced sources and/or inputs.

PDFDatasheet

Line Output Modules

MSRP: $200.00

Your Price: $159.99

Jensen Transformers DIN-LOD • 600 to 600 1:1 Line Output Module
(formerly DIN-LO-11DM)

Single channel unit provides ground isolation at professional line outputs operating at maximum levels up to +22 dBu @ 20 Hz or +26 dBu @ 30 Hz.

PDFDatasheet

MSRP: $125.00

Your Price: $99.99

Jensen Transformers DIN-LOF • 600 to 600 1:1 Line Output Module
(formerly DIN-LO-11FL)

Single channel unit provides ground isolation at professional line outputs operating at maximum levels up to +21 dBu @ 20 Hz or +25 dBu @ 30 Hz.

PDFDatasheet

MSRP: $185.00

Your Price: $149.99

Jensen Transformers DIN-2LOF • Dual 600 to 600 1:1 Line Output Module
(formerly DIN-2LO-11FL)

Two channel unit provides ground isolation at professional line outputs operating at maximum levels up to +21 dBu @ 20 Hz or +25 dBu @ 30 Hz.

PDFDatasheet

Universal Module

MSRP: $220.00

Your Price: $179.99

Jensen Transformers DIN-PB • Line Input/Output or Patchbay Module

Single channel unit provides ground isolation at inputs or outputs. Designed especially for patch bay and long line applications.

PDFDatasheet

"Pro" to "Consumer" Module

MSRP: $121.95

Your Price: $115.95

Jensen Transformers DIN-PC • "Pro" to "Consumer" 4:1 Line Input Module

Single channel unit provides isolation and +4dBu to -10dBV signal level conversion for “Pro” to “Consumer” applications.

PDFDatasheet

Direct Box Module

MSRP: $162.95

Your Price: $154.95

Jensen Transformers DIN-DB • Direct Box Interface Module

Single channel unit provides ground isolation and converts electric guitars, synthesizers, or other line level sources to microphone level low impedance signals.

PDFDatasheet

Mic Split Modules

MSRP: $120.95

Your Price: $114.95

Jensen Transformers DIN-MS-2P • 2 Way Microphone Splitter Module w/Phantom

Single channel, two way microphone splitter, including circuitry required to implement phantom powering of microphones.

PDFDatasheet

MSRP: $151.95

Your Price: $144.95

Jensen Transformers DIN-MS-3P • 3 Way Microphone Splitter Module w/Phantom

Single channel, three way microphone splitter, including circuitry required to implement phantom powering of microphones.

PDFDatasheet

MSRP: $220.95

Your Price: $209.95

Jensen Transformers DIN-MS-4P • 4 Way Microphone Splitter Module w/Phantom

Single channel, four way microphone splitter, including circuitry required to implement phantom powering of microphones.

PDFDatasheet

MSRP: $200.95

Your Price: $197.95

Jensen Transformers DIN-2MS-2P • Dual 2 Way Microphone Splitter Module w/Phantom

Two channel, two way microphone splitter, including circuitry required to implement phantom powering of microphones.

PDFDatasheet

19" Rack Mounting Panel

MSRP: $39.95

Your Price: $37.95

Jensen Transformers DIN-MRP • 3RU Rack Panel Mounting Adaptor

3U rack panel accessory for mounting up to 12 modules.

Input Transformers - Special Order

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 performance for various input stage designs as are designs with additional shielding. All Jensen Transformers offer extended low-frequency and Bessel-tailored high-frequency responses, which results in the ultra-low time-domain distortion (DLP) that only Jensen offers. Insertion loss is minimal and adding phantom power is simple. 

Transformer Mounting Styles

Jensen Transformers  WIre Lead Mounting Style

Wire Lead – Standard Wire Termination with Retainer Clamp

Mounting clamp shown here:

PDFSpec Sheet for included VR mounting clamp

Jensen Transformers PC board mounting style

PC Mount  – For Direct Soldering to Printed Circuit Board

Jensen Transformers Threaded Bushing mounting style

Threaded Bushing – Mounts using 3/8" Threaded Bushing with nut

Common Features for all mounting styles

Microphone preamp designs incorporating Jensen Input Transformers offer several advantages over the more commonly used, inexpensive "transformerless" designs:

  1. Superior Common Mode Interference Rejection
  2. Superior Radio Frequency Interference Rejection
  3. Ideal impedance matching of source to amplifier
  4. Elimination of input coupling capacitor distortion

Jensen manufactures Microphone Input Transformers in many step-up ratios in order to provide the best possible noise performance with any type of active amplifier device.  All have a 30dB Magnetic Shield can and a single Faraday Shield (except * which have two shields)

 

Transformer Selection

To determine the proper ratio transformer for your application, you will need to know the Voltage Noise and Current Noise of the active amplifier device to which the secondary of the transformer will be connected. If you divide the Voltage Noise by the Current Noise of the device you will get a value in Ohms. This value is the Optimum Source Impedance for best noise performance using that particular amplifier device. Select the transformer whose secondary impedance most closely matches the calculated value.

 

Turns ratio is generally selected for lowest total noise. Lowest noise will come from matching the “optimum source impedance” of the amplifier to the transformer’s “secondary source impedance” – shown in the table above to the right of the colon under “Impedance Ratio.”  The optimum source impedance for any amplifier can be calculated by dividing the amplifier’s voltage noise spectral density in V/ √ Hz , such as 1.2 nV/ √ Hz  (1.2 nano-volts per root-Hz) by its current noise spectral density in A/ √ Hz  , such as 2 pA/ √ Hz (2 pico-amps per root-Hertz). In this example, using figures for the AD797 low-noise op-amp, the answer is 600 Ω, making our JT-16A with its 600 Ω source impedance the best choice.  This matching is not critical and mismatches of ±50% generally make less than 1 dB change in total noise. For vacuum tubes, voltage and current noise numbers are difficult to find. However, when they are available, the calculation will generally indicate an optimum source impedance higher than 15 k Ω. Due to the complex tradeoffs in transformer design, our JT-115K-E is the highest ratio (and secondary source impedance) we can produce and stay within Jensen performance criteria. The JT-115K-E gives outstanding results and we recommend it for all vacuum-tube applications.

 

Example: An AD797 has an input Noise Voltage of 1.2nV per root Hertz Max. @ 1kHz and an input Current Noise of 2.0pA per root Hertz. This gives an Optimum Source Impedance of 600 Ohms. The proper choice of transformers for this device would be either the JT-16-A or the JT-16-B.

 

Special Note for Vacuum Tube Applications

If the above calculation is performed for Vacuum Tubes, the value obtained will normally be much higher than the secondary impedance of even our JT-115K-E transformer. We do not manufacture Microphone Input Transformers with ratios higher than 1:10 due to the limited bandwidth that is possible in designs of this type. The JT-115K-E will work very well in most Vacuum Tube applications.

 

MSRP: $110.99

Your Price: $99.99

Jensen Transformers JT-16-A • Microphone input transformer with 1:2 step-up ratio

for use with ultra low noise input amplifiers. Ideal for the discrete 990 op amp

Impedance Ratio Turns Ratio Max 20Hz Input THD 20Hz 20Hz / 20kHz (re:1kHz)
150:600 1:2 +10 dBu 0.025% -0.06 dB / -0.00 dB

PDFDatasheet

MSRP: $80.65

Your Price: $73.32

Jensen Transformers JT-115K-E • Microphone input transformer with 1:10 step-up ratio

for use with low noise FET or vacuum tube input amplifiers, Standard Wire Lead style w/clamp Mount

Impedance Ratio Turns Ratio Max 20Hz Input THD 20Hz 20Hz / 20kHz (re:1kHz)
150:15k 1:10 -2.5 dBu 0.065% -0.26 dB / -0.31 dB

PDFDatasheet

MSRP: $80.65

Your Price: $73.32

Jensen Transformers JT-115K-EPC • Microphone input transformer with 1:10 step-up ratio

for use with low noise FET or vacuum tube input amplifiers, PC Board Mount

Impedance Ratio Turns Ratio Max 20Hz Input THD 20Hz 20Hz / 20kHz (re:1kHz)
150:15k 1:10 -2.5 dBu 0.065% -0.26 dB / -0.31 dB

PDFDatasheet

MSRP: $80.65

Your Price: $73.32

Jensen Transformers JT-115K-ETB • Microphone input transformer with 1:10 step-up ratio

for use with low noise FET or vacuum tube input amplifiers, Threaded Bushing Mount

Impedance Ratio Turns Ratio Max 20Hz Input THD 20Hz 20Hz / 20kHz (re:1kHz)
150:15k 1:10 -2.5 dBu 0.065% -0.26 dB / -0.31 dB

PDFDatasheet

MSRP: $67.99

Your Price: $59.99

Jensen Transformers JT-MB-CA • Microphone input transformer with 1:1 ratio

provides transformer isolation to a transformerless mic preamp input

Impedance Ratio Turns Ratio Max 20Hz Input THD 20Hz 20Hz / 20kHz (re:1kHz)
150:150 1:1 +2 dBu 0.045% -0.10 dB / -0.04 dB

PDFDatasheet

Microphone Splitter Transformers - Special Order

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 the norm. Because they are manufactured on computer-controlled equipment, unit-to-unit consistency is extremely tight. All are enclosed in MuMETAL® magnetic shielding cans to reduce hum caused by nearby magnetic fields and insertion losses are minimal.

 

Transformer Mounting Styles and Features

See Microphone Input Transformers for typical mounting styles and features

 

We will eventually list the complete Jensen Transformers product line on this site.  Until then, please do not hesitate to contact us if you don't see the model of interest listed yet.

Line Input and Repeat Coil Transformers - Special Order

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 MuMETAL® 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.

Transformer Mounting Styles and Features

See Microphone Input Transformers for typical mounting styles and features

 

We will eventually list the complete Jensen Transformers product line on this site.  Until then, please do not hesitate to contact us if you don't see the model of interest listed yet.

Standard Wide Bandwidth Line Input Transformers

MSRP: $70.00

Your Price: $66.50

Jensen Transformers JT-11P-1

Line input transformer with 1:1 ratio, ideal for balancing any high impedance unbalanced input.
Impedance Ratio Turns Ratio Max Input
@ 20 Hz
THD
@ 20Hz
Frequency Response
20Hz / 20kHz
10k:10k 1:1.00 +20dBu 0.025% -0.04dB / -0.05dB

PDFDatasheet

Ultra-high Performance Step-down Line Input Transformers

MSRP: $70.00

Your Price: $66.50

Jensen Transformers JT-10KB-DPC

Line input transformer, 4:1 step-down ratio, ideal for "balanced bridging" inputs or "Pro to Consumer" level conversion.
Impedance Ratio Turns Ratio Max Input
@ 20 Hz
THD
@ 20Hz
Frequency Response
20Hz / 20kHz
40k:2.4k / 10k:600 4:1.00 +21dBu 0.015% -0.04 dB / -0.03 dB

PDFDatasheet

MSRP: $132.70

Your Price: $119.95

600 Ohm to 600 Ohm Repeat Coil Transformer

JT-11SSP-6M

Line input transformer, 1:1 ratio split winding "repeat coil", ideal for balancing any low impedance input circuit.
Impedance Ratio Turns Ratio Max Input
@ 20 Hz
THD
@ 20Hz
Frequency Response
20Hz / 20kHz
600:600 1:1 +19dBu 0.040% -0.05 dB / -0.01 dB

PDFDatasheet

Line Output Transformers - Special Order

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 are available in a wide variety of package styles and offer the industry’s best combination of bandwidth, level handling, and distortion performance. All have extremely low “leakage” (effective series) inductance that is required to drive very long cables. Various core materials are available based on the source impedance of the driving stage.

Transformer Mounting Styles

Jensen Transformers Wire Lead Mounting Style

Wire Lead – Standard wire termination with retainer clamp

Jensen Transformers PC board mounting style

PC Mount  – For Direct Soldering to Printed Circuit Board

Jensen Transformers Load Isolators - for decoupling capacitive loads at high frequencies

Load Isolators - for decoupling capacitive loads at high frequencies 

We will eventually list the complete Jensen Transformers product line on this site.  Until then, please do not hesitate to contact us if you don't see the model of interest listed yet.

Line Level General Purpose 1:1 Bifilar Output Transformer

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.

MSRP: $45.59

Your Price: $41.43

Jensen Transformers JT-11-HFMPC

Line output transformer, 1:1 ratio with bifilar windings, 80% nickel laminations, +18dBm @ 20Hz. PC board mount.
Impedance Ratio Turns Ratio Max Input
@ 20 Hz
THD
@ 20Hz
Frequency Response
20Hz / 20kHz
600:600 1:1 +18dBu 0.008% -0.03 dB / -0.00 dB

PDFDatasheet

MSRP: $41.59

Your Price: $37.78

Line Level Special Purpose Output Transformers

Jensen Transformers JT-123-FLPCH

Line output transformer, 1:1 or 1:2 ratio with quadfilar windings, 50% nickel laminations, +21dBu @ 20Hz. PC board mount.
Impedance Ratio Turns Ratio Max Input
@ 20 Hz
THD
@ 20Hz
Frequency Response
20Hz / 20kHz
600:600 1:1 +20dBu 0.025% -0.04 dB / +0.04 dB

PDFDatasheet

MSRP: $47.89

Your Price: $43.49

Jensen Transformers JT-123-FLCF ( formerly JT-112-LCF )

Line output transformer, 1:1 or 1:2 ratio with quadfilar windings, 50% nickel laminations, +21dBu @ 20Hz.
Wire Lead - Standard wire termination with retainer clamp.
Exactly the same transformer and specs as the JT-112-LCF.
Impedance Ratio Turns Ratio Max Input
@ 20 Hz
THD
@ 20Hz
Frequency Response
20Hz / 20kHz
600:600 1:1 +20dBu 0.025% -0.04 dB / +0.04 dB

PDFDatasheet