Doepfer A-138D

Crossfader/ FX Insert

  • Can be used as a crossfader between two signals or as an insert for external effects
  • Euro rack format
  • Width: 8 HP
  • Depth: 40 mm
  • Power consumption: +20 mA (+12V)/ -20 mA (-12V)

Further Information

Width 8 TE / HP
21 Customer Ratings
  • 5
  • 4
  • 3
  • 2
  • 1
4.6 /5
  • handling
  • features
  • sound
  • quality
Total
Dieter Doepfer - Modular King!
TerenceB, 14.10.2014
It was Dieter Doepfer who first came up with the Eurorack format now adopted by pretty well all of the world's analog modular bods. Whereas some of the newcomers to the scene produce multifunctional kit laden with a sometimes tiresome "attitude", Doepfer modules remain modest and simple affairs, each one doing one or things and leaving it up to the user how he or she wants to hook them up. The A-138D is also in this style, acting simply as input amplifier or output attenuator. I thought I'd give one a try having read a few interesting remarks on the Muff Wiggler forum (which every analog head reads), and because I have a large collection of interesting stompboxes that I fancied integrating. And the results have been interesting, especially when positioning fuzz and distortions directly after the VCO stage. Results can be hit and miss depending on box you use, the modules you are using and where you patch them in, but this kind of experimentation is par for the course and part of the fun of building your own modular system. I'd call it a successful punt!
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
handling
features
sound
quality
Very useful for FX pedals
GARCON, 12.06.2020
I used it with my Pigtronix Infinity Looper to get signals out and back into my system. This was perfect as I could attenuate the out and amplify the in. I didn't use the cross fader feature at all.
I only took this module out of my case as I replaced it with the Malekko version which is smaller but more expensive.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
Nope..gonna get something else
30.03.2015
Have tried to use this module quite a lot of times as aux/return for distortion pedals, filters, as audio input from my computer and as "pre-amp" for a spring reverb.

With destortion pedals it was very hard to supress feedback. When no audio came in, feedback swelled up horribly.

Using it with a sherman filter, it tended to color the sound too much and creating sudden resonant peaks (probably also the feedback)

While with the spring reverb, the gain was not enough to get the spring sound to a high enough level and be audible along the rest, while not being mostly amplified background noise.

Lastly, somehow the audio coming into the module bleeds through to other modules on the same rail..

Starting to think I got a damaged module..
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
Great Eurorack Utility Module
sneekeebass1, 10.03.2014
If you have a spare 8hp in your rack and want to integrate external line level effects units then this is the module for you!
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Show variations of this product
Doepfer A-138D
(21)
Doepfer A-138D

Crossfader/ FX Insert Can be used as a crossfader between two signals or as an insert for external effects, Euro rack format, Width: 8 HP, Depth: 40 mm, Power consumption: +20 mA (+12V)/ -20 mA...

Doepfer A-124 Wasp Filter SE
(74)
Doepfer A-124 Wasp Filter SE

Wasp Filter Special edition, Special 12 dB multimode filter, Circuit technology of the "EDP Wasp", Black front, Yellow pot caps, Width: 8 HP, Depth: 45 mm, Power requirements: +30 mA (+12 V)/-10 mA...

Doepfer A-160-2 Clock Divider II
(27)
Doepfer A-160-2 Clock Divider II

Frequency Divider For clock/trigger/gate signals, Width: 4 TE/ 4 HP / 20 mm

Doepfer A-180-2 Multiples
(95)
Doepfer A-180-2 Multiples

Passive Multi-Port Distributor 8x Interconnected jacks, Sockets are divided into 2x quadruple groups; but can also be modified to an eight-multiple (soldering bridge on the circuit board), Width:...

Doepfer A-160 Clock Divider
(43)
Doepfer A-160 Clock Divider

Clock Divider Module Frequency divider for digital clock signals, 6 Outputs (input frequency / 2 - input frequency / 64), LED indicator for each output, Eurorack format, Width: 4 HP, Depth: 40 mm,...

Doepfer A-138s Mini Stereo Mixer
(57)
Doepfer A-138s Mini Stereo Mixer

Mini Stereo Mixer 4-in-2 mix module in Eurorack format, Four inputs with attenuator and pan control, plus two 3.5 mm mini jack outputs, Width: 8 HP, Depth: 30 mm, Power requirements: +10 mA (+12 V)...

Doepfer A-180-3 Dual Buffered Multiple
(37)
Doepfer A-180-3 Dual Buffered Multiple

Synthesizer module Double buffered 1-in-3 multiple, For buffering and duplication of CV and audio signals, Width: 4 TE / 4HP / 20.0 mm

Vermona Modular TAI-4
(11)
Vermona Modular TAI-4

Audio Interface Module for Eurorack Modular System Two balanced input and output channels (1 jack each and 1 XLR), Three-stage switchable input and output volume 0 / -6 / -12 dB and 0/6/12 dB,...

Doepfer A-199 Spring Reverb Module
(58)
Doepfer A-199 Spring Reverb Module

Spring reverb module The Doepfer A-199 is a spring reverb module that via the aid of spiral springs electronically reproduces the reverb effect. Spring system with 3 separate springs, Reverb...

Doepfer A-106-5 SEM Filter
(43)
Doepfer A-106-5 SEM Filter

Filter 12 dB Multi-mode filter, in which the circuit of the SEM module is used, Width: 8HP 40.3 mm, Depth: 55 mm (measured from the rear of the front panel), Power requirements: +30 MA (+ 12V) /...

Doepfer A-119
(49)
Doepfer A-119

External Input / Envelope Follower Module A-119 is used to integrate external audio signals into the system A-100, and includes the components pre-amplifiers, envelope follower and a comparator....

Doepfer A-124 Wasp Filter
(56)
Doepfer A-124 Wasp Filter

Wasp Filter Module A-124 is a special 12 dB multimode filter using the "strange" filter circuit of the "EDP Wasp" (an analog synthesizer with black / yellow housing manufactured by the UK company...

£50
Excluding VAT; plus £8 shipping
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
Share This Product
Your Contacts
Phone: +49-9546-9223-30
FAX: +49-9546-922328
11
(11)
Recently Viewed
Audient iD4 MKII

USB-C Audio Interface 24 bit / 44.1 - 96 kHz, ADC dynamic range: 121 dB, DAC dynamic range: 126 dB, @Class A Audient console microphone preamplifier, Mic Gain 58 dB,

Recently Viewed
Alesis Nitro Expansion Pack

Expansion set for Alesis Nitro Mesh Kit Consist of 1x 10" One-Zone Pad and 1x 08" ON zones Tom Pad, Includes necessary rack clips, cymbal holder, L-rods and cables

Recently Viewed
Sonor SS 1000 Snare Stand

Sonor SS 1000 Snare Stand, 1000 hardware series, gearless basket adjustment, double braced, stable rubber foots,

Recently Viewed
Electro Harmonix Ripped Speaker Fuzz

Electro Harmonix Ripped Speaker Fuzz; Effects Pedal for Electric Guitar & Bass; low Fuzz settings emulate Vintage Lo-Fi Distortion Sounds created by a Razor Blade applied to a Speaker Cone, a loose Tube or a faulty channel on a Recording…

Recently Viewed
Otamatone Neo White

Otamatone Neo, Electronic sound toy / synthesizer, standard size, selection of various sounds via new studio smart phone app, cross link of smart phone and Otamatone via cable, power plug for external power supply, stereo headphone jack, volume adjustable, playing…

1
(1)
Recently Viewed
iZotope Spire Studio 2nd Generation

iZotope Spire Studio 2nd Generation; mobile recording studio with lithium-ion battery (up to 4 hours runtime); 2 tracks can be recorded simultaneously; up to 8 tracks per project can be played back; recording format: 24-bit / 48 kHz; up to…

Recently Viewed
Endorphin.es Ground Control

Endorphin.es Ground Control; Eurorack module; performance sequencer; 24-pads keyboard for realtime programming; USB-B port and MIDI in/out for using external MIDI devices and DAW integration; 3 melodic tracks with CV/Gate outputs; 8 drum tracks with trigger outputs; 24 pattern per…

1
(1)
Recently Viewed
Blackmagic Design Pocket Cinema Camera Pro EVF

Blackmagic Design Pocket Cinema Camera Pro EVF; Viewfinder fits Pocket Cinema Camera 6K Pro; Viewfinder with internal proximity sensor, 4-piece glass diopter, built-in status info display and digital test chart; Video and power connections: via Pocket Cinema Camera 6K Pro…

2
(2)
Recently Viewed
Universal Audio UAFX Astra Modulation Machine

Enforcement Pedal Stereo modulation, With chorus, flanger and tremolo effects, True or Buffered Bypass, Preset storable, Additional effects downloadable, Live / Preset mode, Dual processor UAFX Engine, 2 Inputs: 6.3 mm pawl (input 2 for stereo connection), 2 Outputs:…

Recently Viewed
Otamatone Neo Black

Otamatone Neo, Electronic sound toy / synthesizer, standard size, selection of various sounds via new studio smart phone app, cross link of smart phone and Otamatone via cable, power plug for external power supply, stereo headphone jack, volume adjustable, playing…

Recently Viewed
Zoom PodTrak P4

Podcasting Recorder Four microphone inputs (XLR, P48V phantom power switchable), Four headphone outputs with individual volume controls (3.5mm stereo jack), Gain control and mute button per input, Mix minus function for automatic feedback suppression for incoming calls, Connection of…

Recently Viewed
Aputure Accent B7c

Aputure Accent B7c; smart 7W RGBWW LED bulb; uses the same colour mixing technology as the Nova P300c, covering the same colour temperature spectrum from 2000 to 10000 Kelvin; built-in Li-Po battery with a runtime of up to 70 minutes…

Give Feedback
Feedback Found an error or want to give us feedback about this page?

We're looking forward to hearing from you and aim to solve any problems as soon as we can.