Synthetic Sound Labs 1310 Digital Delay (Demo Video)

This is a demonstration of the Synthetic Sound Labs 1310 Digital Delay module. The $199 device is capable of subtle doubling, hard timed delays and super flanging.

Details below.

Synthetic Sound Labs 1310 Digital Delay Description

The SSL 1310 Voltage Controlled Digital Delay is a single width 5U/MU module for producing short to medium audio delays. For shorter delays, short room like slap-backs are killer. At medium delays, you can emulate vintage tape echos. You can even force the module for longer delays, but digital quantizing noise becomes audible – but who’s to say what’s musical and what’s not?

It’s based on the ubiquitous Princeton Technologies PT2399 delay chip which is used in countless effects pedals. The really cool part is that delay times are voltage controllable, allowing everything from a little chorusing effect to a grinding, gurgling mass hysteria.

RECIRC-ulation (repeats) are controlled manually and can go way beyond self-oscillation! The MIX control smoothly blends dry, undelayed signal with the delayed, all the way through delay only (no original signal), thus saving a mixer at the output. Using an external VCA, filters and mixers, you can also create your own feedback patches. Cool and simple. Use two 1310s for cool stereo effects and through-zero-flanging!

CV AMT controls how much of the DELAY CV control voltage input is mixed with the manual DELAY setting. Go from Rockabilly slap to literally audio clicks in a single bound.

INPUT and OUTPUT levels are designed for the hot signals a synth produces, so for minumum noise and best performance, external audio devices such as microphones and guitars should be preamplified before being fed to this module.

See the Synthetic Sound Labs site for more info.

via davidryle:

I mostly am using it as a gentle flanger in this demo but it is far more powerful than what I demo here. You can get one for your 5U MU modular synthesizer by checking out the website at

I also finished a project where I was modifying a stock Q111 Pan/Fade module from I added an attenuator pot to the control input and added an inverter circuit to the output #2. This enables the Panning portion of the module to output audio to two channels of my mixer in stereo. I have control over how wide the panning is and both output channels are normal (un-inverted) so there is no cancellation when sending to effects etc..

I am using several other delay units as well in this demo. TC Electronics D-Two is way in the background so it isn’t really a factor. Strymon ‘s Blue Sky Reverberator is the heavy plate reverb in the background. The Korg Kaoss 3 pad is used to have some looping fun, but I tried to keep it low level so not to interfere with the demo of the 1310 delay module.

There are four separate voices playing in this piece from the modular. The sequencers are generating various time signatures and loops but all of the distorted flanging effect is the 1310 Digital Delay. This is one fun unit and a great addition to my modular synth.

The title is about the amount of time since I got serious about building a modular synth to work with. It has been a little over two years (9 seasons) since I made the commitment. No looking back and I am very happy with the move away from dedicated keyboards and soft synths (although I still use them for other things).

Thanks to Doug Slocum at Synthetic Sound Labs for the great delay module. He has other ideas in the works and I am very excited about the future of his endeavor.

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