These are DIY kits, no ready modules! Building these DIY kits happens on your own risk. We can't do support or give a guarantee for correct function, because that depends on your own skills. Be responsible and check the building instructions before you buy. Thank you!


Feedback Modules - 1BIT Multitap Delay

1BIT Multitap Delay is an adaptation of classic 1bit delays from the 80s to Eurorack with many interesting add-ons.

• 3 cv inputs: FB1 CV, FB2 CV, EXT MOD
• 3 cv level pots: FB1 CV, FB2 CV, EXT LEV
• 1 signal input: INPUT
• 1 gate input: LOOP
• 9 control pots: IN LEV, TAP1 LEV, TAP2 LEV, DRY, FEEDBACK1, FEEDBACK2, TIME, RATE, DEPTH
• 2 tap select switches (8pos): TAP1, TAP2
• 3 on-on switches: feedback1 NORM/INV, feedback2 NORM/INV, loop ON/OFF
• 3 on-off-on switches: Feedback1 EQ SOFT/OFF/HARD, Feedback2 EQ SOFT/OFF/HARD LFO modulation EXT/OFF INT
• 1 push momentary switch: LOOP
• 3 outputs : TAP1, TAP2, MIX

 

Power: 230mA @+12V; 85mA @-12V

Width: 22 HP

Depth: 50mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts, no SMD parts. Building instructions can be downloaded here.

DIY Level: advanced. Definitely no beginner kit!

Feedback Modules - 1BIT Multitap Delay

192,00 €

  • 0,58 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - 106 Chorus

The 106CHORUS is an accurate recreation in Eurorack format of one of the most sought after choruses, the one from a famous analog polysynth from the eighties.

• mono analog input
• input level pot for optimal signal
• stereo analog output (L + R)
• bypass switch (ON / BYPASS)
• chorus mode switch (MODE1 / MODE2)
• standard 10 pin euro power (+12V / -12V)

First demo is a simple sound from Ambika to 106 Chorus. (No chorus/chorus1/chorus2/no chorus/chorus1/chorus2)

In second demo we used 2 System-X VCOs to 106 Chorus.

Here you hear it first with no Chorus, then Chorus I, after that Chorus II.

 

Power: 24mA @+12V; 24mA @-12V

Width: 6 HP

Depth: 115mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts, no SMD parts. Building instructions can be downloaded here.

DIY Level: medium.

Feedback Modules - 106 Chorus

112,00 €

  • 0,18 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - CP3-

THE CP3MINUS is the 6HP SMD variant of CP3+ Mixer, minus the MULTI section.

 

• 4 mono analog input
• 4 input level pots
• 1 dual level pot
• One inverting and one non-inverting output jacks
• Standard 10 pin euro power (+12V / -12V)

Power: 23mA @+12V; 25mA @-12V

Width: 6 HP

Depth: 35mm

 

This is a Do-It-Yourself kit, not an assembled module. This kit contains all the parts needed to build a complete CP3- module. All parts included, be aware that both SMD and through-hole (THT) parts might be to solder.

Building instructions can be downloaded here.

DIY Level: easy but contains SMD parts.

Feedback Modules - CP3-

39,00 €

  • 0,12 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - CP3+

The CP3PLUS is an accurate recreation in Eurorack format of one of the most appreciated vintage modular audio mixers. The specific distortion makes it not only a great summing unit but also a great sound design tool. The included MULTI is a welcome bonus.

• 4 mono analog input
• 4 input level pots
• 1 dual level pot
• One inverting and one non-inverting output jacks
• One 4 jack passive multiple
• Standard 10 pin euro power (+12V / -12V)

Power:  23mA @+12V; 25mA @-12V

Width: 10 HP

Depth: 22mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here

DIY Level: easy.

Feedback Modules - CP3+

44,00 €

  • 0,13 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - ENV-100

This is probably the fastest envelope generator in Modularland.
Why? Because it is based on the fastest one. The classic Japanese modular from the seventies everyone loves.

• 4 control pots:Attack, Decay, Sustain, Release
• 1 gate switch: triggers ADSR cycle
• 1 time switch: switches between fast and slow envelope times
• one normal and one inverting output jack 10V peak
• standard 10 pin euro power (+12V / -12V)

FAST TIME
Attack Time 4ms-2s
Decay Time 8ms-4s
Sustain Level 0-8V
Release Time 8ms-4s

SLOW TIME
Attack Time 6ms-20s
Decay Time 15ms-40s
Sustain Level 0-8V
Release Time 15ms-40s

 

Power:  20mA @+12V; 15mA @-12V

Width: 6 HP

Depth: 35mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, be aware that both SMD and through-hole (THT) parts might be to solder. Building instructions can be downloaded here.

DIY Level: medium but includes SMD parts!

Feedback Modules - ENV-100

39,00 €

  • 0,12 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - ENV-310

This is an envelope generator based on the SMD AS3310. The AS3310 is a modern recreation of the classic Curtis CEM3310 chip, used in many famous mono and poly analogue synth from the eighties. We took the best ideas from all the classic 3310 circuits and tried to squeeze the maximum from this fantastic chip. The MODE switch takes this module beyond a simple ADSR type envelope generator.
It can work as:
• NORMAL - a conventional ADSR envelope,
• DAMPED - an ADRR piano envelope approximation
• AUTO - a short gate will cycle the envelope shaper through a complete ADR envelope
It has an additional TRIGGER input which can be used for generating multiple peak envelopes.

• 4 control pots:Attack, Decay, Sustain, Release
• 1 gate switch: triggers ADSR cycle
• 1 mode switch: Normal (ADSR),Damp (ADRR),Auto (ASR)
• 1re trigger input
• standard 10 pin euro power (+12V / -12V)

 

Power:  55mA @+12V; 16mA @-12V

Width: 6 HP

Depth: 35mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, be aware that both SMD and through-hole (THT) parts might be to solder. Building instructions can be downloaded here.

DIY Level: medium but includes SMD parts!

Feedback Modules - ENV-310

39,00 €

  • 0,13 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - Hi-Fusion VCF

HI-FUSION is a remake of the classic Polyfusion from the 70s with some improvements.
It is a low pass OTA VCF based on the well known LM13700 ic.
We chose to make this circuit because it's v/oct stable, and the trimmers allow to calibrate it properly.
It has a switch for 2 pole and 4 pole configuration, each with it's own character and timbre.
This design produces nice sounding filter fm results.

This kit contains all the parts needed to build a complete HI-FUSION module.

• 1 audio input: IN
• 1 audio level pot: ATT
• 3 cv inputs: FREQ(with attenuator), FREQ (for v/oct), RESO
• 1cv level pot: FREQ CV (attenuator for FREQ cv input)
• 2 vcf control pots: FREQ (frequency) and RESO ( resonance)
•1 configuration type switch: 2P and 4P (2pole or 4 pole)
• 1 output: OUT
• standard 10 pin euro power (+12V / -12V)

Power:  20mA @+12V; 20mA @-12V

Width: 10 HP

Depth: 38mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: medium.

Feedback Modules - Hi-Fusion VCF

59,00 €

  • 0,2 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - Lo-Fusion VCF

LO-FUSION is a remake of the classic Polyfusion from the 70s with some improvements. It is a low pass OTA VCF based on the well known LM13700 IC. We chose to make this circuit because it's v/oct stable, and the trimmers allow to calibrate it properly. It has a switch for 2 pole and 4 pole configuration, each with it's own character and timbre. This design produces nice sounding filter FM results.

• 1 audio input: IN
• 1 audio level pot: ATT
• 3 CV inputs: FREQ(with attenuator), FREQ (for v/oct), RESO
• 1 CV level pot: FREQ CV (attenuator for FREQ cv input)
• 2 VCF control pots: FREQ (frequency) and RESO ( resonance)
• 1 configuration type switch: 2P and 4P (2pole or 4 pole)
• 1 output: OUT
• Standard 10 pin euro power (+12V / -12V)

Power:  20mA @+12V; 20mA @-12V

Width: 10 HP

Depth: 38mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: medium.

Feedback Modules - Lo-Fusion VCF

59,00 €

  • 0,2 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - LFO-10

This little module is an evolution of the LFO of the famous MS monophonic synth from the seventies, adapted to Eurorack.

• 2 control pots for FREQUENCY and WAVEFORM
• 1 FREQUENCY RANGE switch: LOW and HIGH
  LOW  - 18mHz (55sec)- 0,7Hz (81,4sec)
  HIGH - 0,63Hz (1,6sec) - 24Hz (42msec)
• 2 outputs: SQUARE 0/10V Vpp and TRIANGLE -5/5V Vpp
• Standard 10 pin euro power (+12V / -12V)

Power:  20mA @+12V; 15mA @-12V

Width: 4 HP

Depth: 35mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: medium.

Feedback Modules - LFO-10

29,00 €

  • 0,09 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - LinMix

LinMix is a compact 6HP mixer suitable for audio signals and modulation CVs. It is DC coupled.

• 4 audio/cv inputs
• 1 audio/cv output
• 4 input volume/gain pots
• 1 output level pot
• Standard 10 pin euro power (+12V / -12V)

Power:  5mA @+12V; 5mA @-12V

Width: 6 HP

Depth: 42mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: easy.

Feedback Modules - LinMix

27,00 €

  • 0,11 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - MIX BX

As probably many of you know the MIX BX (like our PRE BX channel strip) is based on a very popular mixer used by techno artists in the nineties and loved for its specific sound.

• Input Level from -50dBm to -10dBm
• EQ Hi +-10dBm/10kHz shelf type
• EQ Low +-10dBm/100Hz shelf type
• Output Level 20Vpp
• 6 mono input jacks ( 1 per channel)
• Pot controls for channels: Gain, Hi, Low, Aux1 send, Aux2 send, Pan, Volume
• 6 mute switches ( 1 per cannel)
• Pot controls for master: Master Level, Headphone Level, Aux1 Return, Aux2 Return
• 2 mono aux send jacks
• 4 mono input jacks for two stereo Aux returns
• 2 jacks for master left and right out
• One 3,5mm stereo jack for headphone out
• Boxed 10 pin euro power (+12V / -12V)

Power:  50mA @+12V, 50mA @-12V

Width: 35 HP

Depth: 35mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, be aware that both SMD and through-hole (THT) parts might be to solder. Building instructions can be downloaded here.

DIY Level: advanced and includes SMD parts!

Feedback Modules - MIX BX

215,00 €

  • 0,56 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - Multi

Multi it's an 8 jack unbuffered multiple with front panel in black/gold Feedback style.
It's separated in 2x4 sections with jack's 4 link going to jack 5.
So you can use it as two independent multiples or one single 7 jack multiple.

It uses PJ301BM jack, for a better strength of the module.
This kit contains all the parts needed to build a complete MULTI module.

Width: 3 HP

Depth: 20mm

 
No manual needed. All parts included, only through-hole (THT) parts to solder, so SMD parts.

DIY Level: very easy.

Feedback Modules - Multi

15,00 €

  • 0,04 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - PRE BX

Sound Design channel strip based on a famous late eighties small mixer used by many electronic musicians for the techno sound of the nineties.

• 1 audio input
• 1 gain pot
• 2 EQ pots: low and hi
• 1 output level pot
• 1 audio output

Sound Demos :
• all the modifications in the sound are made only with the PRE unit.
• all the demos respect the formula : 2-3 measures original sound, increasing high freq., increasing low freq., increasing gain, increasing hi freq. etc.
Demo 01
Demo 02
Demo 03
Demo 04
Demo 05

 

Power:  6mA @+12V; 6mA @-12V

Width: 4 HP

Depth: 38mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: medium.

Feedback Modules - PRE BX

44,00 €

  • 0,01 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - PRE CR Module

Sound Design channel strip based on a famous late eighties small mixer used mostly for the well known TB303 distortion sound.

• 1 audio input
• 1 input gain potentiometer
• 2 EQ potentiometers: low and hi
• 1 output level potentiometer
• 1 audio output
• Standard 10 pin euro power (+12V / -12V) (works also at +15V / -15V)

 

Power:  22mA @+12V; 25mA @-12V

Width: 4 HP

Depth: 42mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: medium.

Feedback Modules - PRE CR Module

67,00 €

  • 0,11 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - smArTT Verter

The smArTT Verter is a simple but very effective utility module for scaling the level and polarity of audio and CV signals.

• 1 audio/CV input
• 1 input level potentiometer
• 1 signal polarity switch (+/-)
• 1 DC offset potentiometer (+/-5V or +/-10V)
• 3 output jacks

Power:  13mA @+12V; 12mA @-12V

Width: 4 HP

Depth: 33mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level: easy/medium

Feedback Modules - smArTT Verter

25,00 €

  • 0,09 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - Squeeze

4HP Compressor designed for continuous adjustment of gain, threshold and compression ratio with a single potentiometer.

• 1 audio input: IN
• 1 audio level pot: INPUT
• 2 control pots: LESS/MORE (compression), MAKE-UP gain
• 1 output: OUT

 

Power:  25mA @+12V; 25mA @-12V

Width: 4 HP

Depth: 35mm

 

This is a Do-It-Yourself kit, not an assembled module. All parts included, be aware that both SMD and through-hole (THT) parts might be to solder.

Building instructions can be downloaded here.

DIY Level: medium but SMD parts included!

Feedback Modules - Squeeze

55,00 €

  • 0,08 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - Static

Static module it's a comprehensive collection of noise sources generated with different methods.

• 2 control pots: MORPH, SPECTRUM
• 1 switch: spectrum type TR/CHIP
• 8 outputs: MSWHITE, MSPINK, ZNWHITE, ZNPINK, DARK, MORPH, TROUT, RNDVOLT

Here are some audio demos. First demo on Soundcloud shows audio outputs in this order:

MSwhite/Mspink/ZNWhite/ZNPink/DARK/MORPH/TR (Spectrum Knob turned/SW in both positions).
The second one shows Noise through VCA with ADSR in the same order than previous recording.

 

Power:  35mA @+12V; 30mA @-12V

Width: 10 HP

Depth: 38mm

 

This is a Do-It-Yourself kit, not an assembled module.  All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level:  medium.

Feedback Modules - Static

52,00 €

  • 0,2 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - TWO59 VCO

The TWO59 is an accurate recreation in Eurorack format of the VCO/LFO section of the most sought after vintage west coast complex oscillator.

Because of the triangle core, the VCO works very well for FM modulation.

• 3 cv inputs: KEY CV, CV IN, FM IN
• 2 cv level post: CV and FM
• 1 audio input: LOCK IN (for lock gain-works as a hard sync)
• 1 audio level in pot: LOCK GAIN
• 2 frequency pots: FREQUENCY (coarse) and FINE
• 1 frequency range switch: LOW and HI (for LFO and VCO)
• 4 outputs: SINE, TRAINGLE, RAMP, SQUARE

Here are some audio demos. The sound clicks are from computer latency, not from the modules :) Somehow I forgot to record the ramp wave.
Demo 01
Demo 02
Demo 03
Demo 04
Demo 05
Demo 06

 

Power:  40mA @+12V; 25mA @-12V

Width: 10 HP

Depth: 38mm

 

This is a Do-It-Yourself kit, not an assembled module.  All parts included, only through-hole (THT) parts to solder, no SMD parts. Building instructions can be downloaded here.

DIY Level:  advanced, not for beginners!

Feedback Modules - TWO59 VCO

89,00 €

  • 0,23 kg
  • Available
  • Ships within 3-5 days1

Feedback Modules - TWO59 SHAPER

The TWO59 SHAPER is an accurate recreation in Eurorack format of the modulation and timbre section of the most sought after vintage west coast complex oscillator.

This kit DOES NOT contain: VTL5C3 and VTL5C3/2! See the BOM for details.

• 4 cv inputs: MOD CV,TIMBRE CV, SYMMETRY CV, ORDER CV
• 2 cv level pots: MOD and TIMBRE
• 4 control pots: MODULATION INDEX,TIMBRE, SYMMETRY, ORDER
• 1 mod waveform switch (3pos): WAVESHAPE-selectable: RMP, SQR, TRI
• 4 off-on switches: TIMBRE MOD, PITCH (FM) MOD, AMPL MOD, PHASE LOCK MOD
• 2 outputs: linked together
• 2 10way connectors on the back: CON8-main VCO, CON9-modulation VCO

 

Power:  150mA @+12V; 80mA @-12V

Width: 15 HP

Depth: 55mm

 

This is a Do-It-Yourself kit, not an assembled module. This kit contains all the parts needed to build a complete TWO59 SHAPER module except VTL5C3 and VTL5C3/2. Only through-hole (THT) parts to solder, no SMD parts.

Building instructions can be downloaded here.

DIY Level:  advanced, not for beginners! Be aware that it's a partial kit, read the text.

Feedback Modules - TWO59 SHAPER

165,00 €

  • 0,42 kg
  • Available
  • Ships within 3-5 days1