I’ve been wondering for a while about how to get that woozy Boards of Canada sound in Eurorack without splashing out on the instant lo-fi junky module. I’ve seen that some versions of the parasites clouds firmware does warble the pitch a bit depending on your power supply (most notably the one that @rbeny uses). But if you want more control here’s a way of getting that tape wow with the latest parasites firmware, and without actually using the module as a traditional delay.
Use the looping delay mode, with position fully CCW, pitch centred, density CCW, first blend mode (dry/wet) fully CW, third blend mode (feedback) fully CCW. This essentially sets it up with a zero-length delay line, so it should sound just like your dry signal. I prefer to use the high quality stereo mode for this effect because the low quality 8-bit sound is just too noisy for my purposes, but you can try that too.
To add the warble, patch an LFO through an attenuator (e.g. a VCA) into the POS input. I find it needs to be attenuated strongly to make a subtle effect. Then you can play with the texture control to add filtering to the input, and use the lovely built in reverb too, of course.
I put Clouds at the end of my signal chain right before the output for this purpose.
Hope some of you find this useful!
[Bonus tip: the second blend mode (stereo spread) is super useful. Fully CW it passes through the signal unchanged, but as you move towards 12 o’clock it narrows the stereo image. This is great if you have modules that hard pan stereo or if you have two distinct signals into the left and right inputs into Clouds. So you can have the control at 10 o’clock or something and have some stereo image without it being too extreme. Crucially, the stereo reverb comes after this effect so you still get a nice full stereo field from that.]