Jensen Input Transformator JT-115K-EPC
Gain - 16-68 dB  Gain Stepped recallable with Grayhill Switch
48V - For Phantom Power Microphones
Pol - Switches the Polarity of the Input
Pad - Enables - 20dB Pad at the Input
Low-Cut filter - 10-250 Hz (24dB/oct)
High-Cut filter - 3.5-20 kHz (24dB/oct)
Colour Module (DIYRE) - to add coloration
Output Fader -  -∞ to +12dB after Preamp
Level Meter - internal switchable After Fader or After Preamp
Peak Led - After Preamp
High quality pots (TT Electronics and Alps Alpine)
Balanced THAT1646 Output

Its running on +16V/-16V/+48V in the 500 API/ VPR Rack
or in the GDIY 51X Rack

More Pictures and Build Thread
GroupDIY Help Thread

Here are some listening samples
Soundcloud SL Preamp Comparison

Build Docs
Buildguide - PDF


PriceFrom €329.84
Excluding Sales Tax
  • NEW KITS STOCK will be shipped by 16.05.2022

    NEW ASSEMBLED STOCK will be shipped by 01.07.2022

    This Preamp is a recreation of a Classic Preamp design used in a 4000E Desk. The preamp section is based on the E01 schematics and uses the original Jensen Input Transformer for a balanced Input Signal. The Preamp design itself uses two Op Amps for Gain. Due to the Input Transformer the Preamp has its own unique characteristic sound that could not be achieved with only semiconductors based Preamps. The Sound of the preamp is definite and has a rough nature in Sound that works definitely in every music production. Instead of a Gain pot we are using a stepped Grayhill Switch and make this Preamp full recallable.

    The Addons of this Preamp are Peak LED and a full Meter, which can be selected Pre or Post Fader. The Fader at the End of the Preamp module gives the most flexible options to make this Preamp use in different situations. In that combination of Preamp and Fader there are already a lot of possibilities for sound colouration with the Preamp. In addition we added a variable Low and High Cut Filter, to clean up the Signal before recorded and DIYRE compatible Colour Modul Option to add another Colour to this preamp.

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