Eurorack – Deluxe Delay

Deluxe Delay Eurorack module front view
Deluxe Delay Eurorack module

Manual in PDF format

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Deluxe Delay functional block diagram
Deluxe Delay functional block diagram
Deluxe Delay Eurorack module side view

Deluxe Delay side view – depth is about 30 mm

Deluxe Delay

This module is discontinued!

The queen among the Eurorack-Delays offers a Send-VCA you can modulate for swirly delay trails on desired passages. Besides further control voltage inputs for delaytime and feedback you’ll even get a Send-Return-path.

The Deluxe Delay is built around the PT2399 Delaychip which can make strange and interesting noises when going into delaytimes, the chip was not built for. The control voltage features we spent our deluxe delay are quite versatile: besides the common modulation of delaytime and feedback you can also control a Send-VCA (voltage controlled amplifier). This offers total control on the amount of delay being painted on the desired passage of your input signal. You’ll also get send/return path to further colorize the echos with external EQs or filters.

Deluxe Delay Features

  • PT2399-based digital delay for eurorack module systems
  • very small depth of just 35 mm, width 71 mm / 14 eurorack units
  • cute aluminium frontpanel with dual color eloxalprint
  • high quality pots screwed to the frontpanel
  • Send-VCA with CV-input for controling delay amount
  • CV-input for modulation of the delaytime up to times, the PT2399 was not built for
  • CV-input for modulation of feedback up to selfoscillation
  • Logarithmic delay-pot for finer adjustment of delaytime
  • send/return-jacks to insert external Eqs or filters
  • Mix-pot from 100% ‘dry’ up to 100% ‘wet’ for Send-Return mixer applications
  • Powerbus compatible to Eurorack-/Doepfer-System
  • Current draw: +12V – 45mA, -12V – 12mA
  • since 11/2015 the delay only needs +12/-12 Volt and NOT the 5V anymore

Send VCA

You might ask yourself now „What? What? Wait. Send-VCA? I don’t get it! What is it good for?“ Well, it is just this Send-VCA making the DELUXE DELAY that unique. This feature allows continuois and precise control of the amount of delay on a special musical moment. ‘Ordinary’ delays endlessly paint the input signal with their echos, often resulting in an undefined sound-mash. Our DELUXE DELAY allows you e.g. to send a drumloop through it and put delay on JUST a snaredrum, keeping the rest of the loop completely dry.

Thats how to do it: tilt the switch to the left to close the Send-VCA and send a control voltage into the Send-VCA CV-jack. The control voltage is 0 Volt per default and goes high (e.g. +5V) for just that short moment, the snare is present. As long as the CV is high, it opens the VCA, letting the short passage with the snare sound pass through into the delayunit. The CV drops back to 0 Volt, closes the Send-VCA and the rest of the loop will therefore NOT be painted with the delay effect.

The feedback of the delay with the echoes of your snare are NOT influenced by the Send-VCA and fade out naturally by getting back into the delayunit independently. Of course the Send-VCA can not only be ON or OFF; the modulation of the Send-VCA is stepless.

The switch will be mixed with the CV-jack and is kind of simple ON/OFF function on the Deluxe Delay.


This knob is a simple attenuator to get the sometimes very high audiolevels of the eurorack world (up to 20 Vpp) down to a level, the delaychip does not distort anymore (about 5V pp), even if the Send-VCA is fully open. The input signal itself, which will be mixed with the delay by the „mix“ knob is not altered by the „Level“ knob.


Delaytime can be modulated by a control voltage. Of course there is also a knob for adjusting it by hand. Fully to the right is the shortest time, fully left is the longest. This seems to be ‘wrong’ first. But due to the logarithmic characteristics of the pot it has the benefit of a much better and precise feeling for adjusting the desired delaytime. The delaytime of the Deluxe Delay can be pushed deeply inside into the area, where the PT2399 starts to sound quite weird.


“Feedback” sets the amount of delay output getting back into the delay’s input. In other words, you can adjust the number of echoes. The more you turn it to the right, the longer it will take until all echoes are gone. At a certain position the echos are repeated endlessly and the delay starts to scream by itself, even if there is no input signal at all. Similar to the Delay-CV-input you can modulate the amount of feedback using an external control voltage. In most cases you want to get the modulation voltage quite low using an attenuator.

Send/Return Buchsen

Here you can insert external effects. You can colorize your echoes e.g. with a bandpass or highpass filter. What we liked most was to use an external bandpass filter. With the bandpasses Q/Resonance you can additionally influence the feedback and it’s character and response. Distoring the Delaychip with „Send Level“ and slightly modulating the bandpass frequency give the delaysound a nice reggae-feeling.


This adjusts the ratio between 100% dry input signal in leftmost position and – you guess it – 100% delay sound in the fully clockwize position. The levels of “Dry” and “Wet” can become quite different, depending on the position of “Send Level” and the level of the Send-VCA.

Demo Video