Category Archives: RT-1701 EFFEXX Multi FX Processor

RT-1701 starts shipping now!

30.06.2017 News
Heute gehen die ersten “EFFEXX” RT-1701 Multi-FX Module auf die Reise. Die folgenden deutschen Händler sind bei der Erstauslieferung dabei:

Hieber-Lindberg, München
Just music Berlin, München, Hamburg
Music Store Köln
Musikhaus Thomann
Schneidersladen, Berlin

Viel Spaß beim Testen und Einkaufen


EFFEXX RT-1701: New Audio Demo Vintage Delay


One of the most popular FX algorithms nowadays is a vintage style tape delay emulation. The modification of the delay time caused a pitch change because you moved the head directly at some devices or/and switched to another motor speed what involved acceleration effects. The EFFEXX sports up to two of these vintage delays simultaneously plus reverb, post EQ and pre overdrive. With other words – you can create really spectacular SFXs with the module. As a sound source I used the RT-311 Swarm Oscillator and the RT-451 Dual Multimode Filter. Furthermore I added three Doepfer modules to this setup – the A-155 Analog Trigger Sequencer, the A-132 Dual VCA and one A-140 envelope generator.

Modular Synth Convention “MODCON”, Vienna 2017

Some Impressions from the 2017 Modular Synth Convention “MODCON” in Vienna. Thanks to Lara and Erwin from Raw Voltage for their invitation to participate. We are looking forward to join the convention again next year!


Tom Wies from Synth Anatomy recorded some video footage during the event and asked me to produce a little ambient backing track for the video. So you hear an improvisation with the swarm oscillator, the RT-451 multimode filter and the RT-1701 Multi Effects processor “EFFEX”. The sequence was triggered by the doepfer eurorack step sequencer. I did an overdub with some notes on the Accelerator.

RT-1701 EFFEXX: Pad Sound demo


I uploaded that audio file to soundcloud earlier today but for any reason the soundcloud version was full of glitches. So I uploaded the file to our homebase. You are listening to a dry pad sound from the Spectralis. I faded in three different FXs beginning with a Stereo Flanger, followed by a stereo delay and ending with an additional reverbration FX. At the end of the soundfile I am removing the FXs again and you can listen again to the dry version of the file. All FXs are playing in realtime from a single EFFEXX module.



EFFEXX goes Dub


The RT-311 sports an input stage with overdrive, two selectable main effects plus a Reverb and an EQ. In this audio snippet you are listening to filtered echoes and the reverbration effect of the new RT-1701 “EFFEXX” eurorack module. This combination creates a nice psycho ambient dub atmosphere.


The latest demo of the RT-1701 EFFEXX Multi-FX Module


This is the first demo I created with the current beta version of the EFFEXX effect module. I am feeding a simple drum groove from the Spectralis into the EFFEXX module and destroy the sound of it. We hope that gives a first impression about the sonic capabilities of the new module. The EFFEXX module runs as a delay, reverb and filter on the drumgroove. You can listen to extreme feedback settings, serial configuration of delay, reverb and filter and a lot of realtime tweaking.

Heute habe ich eine erste Demo mit der gegenwärtigen Betaversion des EFFEXX Multieffekt-Modul produziert. Die Version ist noch recht abgespeckt – aber die neue Engine läuft nun und bis zur Superbooth 2017 wird es noch viele Änderungen und Ergänzungen geben. Ein einfacher Drumgroove wird in dieser Audiodemo mit dem Eurorack Modul zerstört. Man hört Delays mit extremen Feedback-Einstellungen, Hall und das Filter in Lowpass Betrieb.