Uploaded January 2021 | Updated September 2026, 2 weeks ago
An exploration of how three different modules approach the idea of freezing a delay buffer and then manipulating it.
00:00 Intro
00:20 2hp Freez
06:05 Qu-Bit Prism
16:12 MakeNoise Mimeophon
An exploration of how three different modules approach the idea of freezing a delay buffer and then manipulating it.
00:00 Intro
00:20 2hp Freez
06:05 Qu-Bit Prism
16:12 MakeNoise Mimeophon



![SEM filter comparison 2
Its been a minute since my first SEM filter comparison (link above/below), and a few new SEM filters have come out since then that I found irresistable.
This comparison is low pass only. It would take far too long to compare (in what I view as a useful way) every output and mode, so this is it for now.
In theory theyre all based on the SEM circuitry, but some do have alterations. Im less concerned with purity or adherence to the original sound as I am with how good they sound period.
[Note: the E430 was originally on a power supply that it didnt like, or didnt like it, or had a module on the same power bar that wasnt cooperating. Youll hear a weird delay, which as it turns out was power related. Theres an addendum at the end with the E430 by itself on good power so you can hear it properly.]
Source VCO is an Acid Rain chainsaw. Envelope is Zadar. Sequencer is
Pittsburgh Modular microSequence.
00:00 Intro
00:20 Dry
02:57 Resonance
07:43 Input gain
15:57 Knobbage
18:48 E430 SEM filter comparison 2](https://i.ytimg.com/vi/9uyWXy0NBZw/mqdefault.jpg)






