Ethereal High Pass

Ethereal High Pass


This ethereal high-pass pad is sampled from my modular system ( This is a monophonic stereo patch, turned into polyphonic wonderfulness in Kontakt! It’s a rich, thin, colorful sound that adds ethereal air.

I was inspired by my time with an ARP 2500 back in the ’70s. I fell in love with the colorful high-pass sound of the 1074 filter and have been looking for that ever since. Last year I got the Euro CMS Module 1074 filter and found that sound again!

For this patch I combined it with a very rare custom-built SSM2040 VCF that gives high and low pass outputs from the SSM2040 analog 4-pole ladder filter chip. This filter was built in MOTM format by O. Z. Hall using a PCB from Mad Science Lab ( that OZ modified to enable the high pass modes (see

Patch details:
– 4 VCOs: 2 MOTM 300s and 2 MOTM 310s mixed to mono
– VCOs go into the CMS Module 1074 at medium resonance, with the variable out set to high pass, and the notch out going to the SSM2040 in high pass mode.
– The 1047 and SSM2040 outputs are going into a mixer with moderate stereo separation.
– Both filter cutoffs controlled by an MOTM 800 envelope generator, negative output.

Sampled dry using Logic Auto Sampler, with one velocity layer and three round-robins, sampled every three semitones. EtherealHighPassOneShot is the basic sound with a 20-second sustain, and etherealHighPassLooping is the same with looping sustain. Different notes have different loop points for a rich sound.

This is my first sample set. I hope you enjoy it!


Leave a review to let others know what you thought of the instrument!

Add some fizz and sparkle to your project

4.0 rating
December 18, 2020

I’ll most likely use this instrument in a layered fashion, probably to glue together one or more pad sounds, to create something a little unusual – better yet, unidentifiable – because what it’s really good at is adding fizz and sparkle to a mix. I found it especially easy to blend with other sounds and it has plenty of cut-through so it doesn’t just disappear in a ‘busy’ mix, which is often a problem with delicate, shimmering effects. Steve has created something more than a little bit different.

Chris Bell (wordsSHIFTminds)


Inspired by the ARP 2500, an ethereal patch created with a modular system.

4.0 rating
4 out of 5 stars (based on 1 review)
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