Uploaded November 2023 | Updated September 2026, 2 weeks ago
The G-Storm Electro SEM VCF arrived the other day, and I figured I'd give it a listen in comparison to what, up to this point, I think is the best SEM eurorack module: the Studio Electronics SEM VCF. For an earlier comparison, try this on for size: youtube.com/watch?v=KsHRNZc29WY
(Spoiler alert: The G-Storm gives the SE a serious run for its money)
I've also thrown in the Bubblesound SEM20 and an AMSynths Obie XA. The Bubblesound is mostly SEM, but with some MS-10 bits grafted on that makes it more aggro. The Obie XA isn't a SEM at all, different chip, but is also modeled after an Oberheim filter so I figured I'd toss it in for contrast.
VCO is a Befaco Pony, first on saw then on square. Sequencer is a Clank Chaos. Envelope is Zadar.
Be forewarned: a lot of this video is me going back, and forth, and back, and forth, and back and forth between modules. Don't get seasick.
00:00 Intro
00:20 Standard gain
03:43 Gain up
06:46 Resonance up
08:56 Tight envelope
16:00 Square wave
The G-Storm Electro SEM VCF arrived the other day, and I figured I'd give it a listen in comparison to what, up to this point, I think is the best SEM eurorack module: the Studio Electronics SEM VCF. For an earlier comparison, try this on for size: youtube.com/watch?v=KsHRNZc29WY
(Spoiler alert: The G-Storm gives the SE a serious run for its money)
I've also thrown in the Bubblesound SEM20 and an AMSynths Obie XA. The Bubblesound is mostly SEM, but with some MS-10 bits grafted on that makes it more aggro. The Obie XA isn't a SEM at all, different chip, but is also modeled after an Oberheim filter so I figured I'd toss it in for contrast.
VCO is a Befaco Pony, first on saw then on square. Sequencer is a Clank Chaos. Envelope is Zadar.
Be forewarned: a lot of this video is me going back, and forth, and back, and forth, and back and forth between modules. Don't get seasick.
00:00 Intro
00:20 Standard gain
03:43 Gain up
06:46 Resonance up
08:56 Tight envelope
16:00 Square wave




![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)





