It's for "Industrial Dance Music" but could do techno too:

https://modulargrid.net/e/mystic-circuits-idum

The Leaves add-ons provide fun polyphony that you can change on the fly.

That U-he filter does look promising!

https://u-he.com/products/melt/

But pricey of course . . . not yet available at Perfect Circuit here, and with tariffs. . . .

I've been wondering whether the Evolution will make a reappearance too. I see U-he have released an interesting 24dB cascade filter with drive and resonance compensation which is a similar size.

I love my SSI 2144 filter though (Centrevillage BF2144) so I think acquiring an Evolution is an inevitability. Perhaps go for something cheap and cheerful to tie you over in the meantime?
-- Kayv

I emailed Rossum directly and got this response from "Gary":

"Thank you for your message and for your interest in Evolution.

Yes, more Evolution modules will be produced. Our current estimate is that they will be available in January, and we are hoping to have them before then.

The surest way to hear as soon as they are available is our mailing list. That is how we plan to officially announce new products and any change in availability. You can sign up using the form at the bottom of any page on our site.

https://www.rossum-electro.com/

Thank you for your patience, and for being willing to wait.

Best,

The Rossum Team"

EDITED Sep 9th, 00:06

I have a long-standing pre-order for a Rossum Evolution filter, and understand
they stopped production until they could replace a no-longer available part.

Will they ever come out, or should I just cash it in for something else in the store
(Sweetwater)? Hoping someone out there knows the situation. . . .

Mimeophon - feedback looping and crazy stuff
Sealegs - delay and end of chain processing
Aurora - spectral fx and whale singing
beads - flexible allaround fx, delay, stutter fx and granular

the next could be the Plexiphon, if I get it into my hands
-- VONDENFUNKEN

Off-topic, but what is up with the Plexiphon delay? (delay as in "arriving late").

I like (in no particular order):

• Indian Resonator (Error Instruments) - when Rings is not enough
• Echo Cinematic (Knobula) - wonderfully ambient looping
• Desmodus Versio (Noise Engineering) - oldie but goodie! shimmery tails are needed
• Nautilus (Qu Bit) - interesting LFO produced along with the FX
• Meta (OX) - lots of FX in a small package

and plenty more that don't come to mind atm.

In the process I used AI for setting suggestions. "We" also came up with an interesting experiment
using the Roland JC-40 FX loop to divert the modulation Loop 2 of the Swiss Things through.

Dare I try it? I fear awful oscillation (which might be cool, who knows. . . .)

Guitar Rig Strategy & Signal Chain Blueprint

A summary of the recent configuration notes for the Xotic EP Booster, Wampler Mini Ego, Chase Bliss CLEAN, Strymon Volante, and Roland JC-40 setup.

1. Xotic EP Booster Internal DIP Switches

To capture the vintage Echoplex Maestro EP-3 preamp tone:
* Switch 1 (+3dB Boost): OFF (Down) - Keeps baseline at unity gain to match original EP-3 behavior.
* Switch 2 (Bright Switch): OFF (Down) - Tames clinical highs and accentuates natural warmth/low-mid fatness.
* External Gain Knob: Set fully counter-clockwise (at zero) to act strictly as a tone-sweetening preamp wrapper.

2. Front-End Chain (Before EQD Swiss Things)

Designed to shape guitar dynamics and prime the signal before entering the main loop controller:
1. Guitar ➔ Wampler Mini Ego Compressor
* Settings: Volume at Unity (~10-11 o'clock), Sustain at 12 o'clock, Blend at 11 o'clock (parallel compression preserves pick attack), Attack & Tone toggles UP (Bright/Fast) to maintain articulation before entering the warm preamps.
2. Xotic EP Booster (Always-on, Vintage Setting)
3. Chase Bliss Condor mkII (Gain/EQ)
* Settings: Kept clean for now. Use Bass at ~11 o'clock if the low-mids get too boomy, give a gentle push around 800Hz–1kHz for mid-forward tape playback character, and use LPF if modulation gets piercing.
4. EQD Swiss Things INPUT

3. EarthQuaker Devices Swiss Things Loops

• Loop 1 (Unbuffered / Dirt): Wampler Tumnus ➔ Chase Bliss Wombtone ➔ EQD The Depths
• Loop 2 (Buffered / Ambient): Chase Bliss Mood mkII ➔ Chase Bliss Onward

4. The FX Loop "Dual Echoplex" Mono-to-Stereo Routing

An experimental configuration mapping the Roland JC-40 FX Loop into a self-contained studio mastering line:
1. JC-40 FX Loop SEND (Mono) ➔ Long guitar cable running up to the Xotic EP Booster (on top of the amp).
2. Xotic EP Booster Output ➔ Short patch cable to MXR Booster Mini (on top of the amp).
* MXR Internal Trimpot: Dialed back to 25%–30% (9 o'clock) to blend subtle Echoplex saturation without heavy distortion. External Volume at unity (~8-9 o'clock).
3. MXR Booster Mini Output ➔ Long guitar cable dropping back down to the Chase Bliss CLEAN Compressor Mono Input (on the floor board).
4. Chase Bliss CLEAN Stereo Output ➔ Short TRS-to-dual-TS Y-cable (Stereo Insert Cable).
* Setting: Flip MISO (Mono In, Stereo Out) dip switch ON.
5. Strymon Volante Stereo Inputs (L/R) (Sound on Sound Mode)
* Setting: Wear and Mechanics knobs at ~1 o'clock to introduce authentic tape degradation into the SOS layers.
6. Source Audio Ventris Stereo Inputs (L/R) (Or interchangeable stereo reverb like the EQD Avalanche Run)
7. JC-40 FX Loop RETURNS (L and R)

5. Amp Settings & Emergency Taming Checklist

• JC-40 Switches: Set FX loop to SERIES. Turn the amp's front-panel Bright switch OFF.
• If it howls or oscillates:
  1. Pull the external volume of the MXR Booster Mini back to 8 o'clock.
  2. Flip the JC-40 loop level switch from -10dBm to +4dBm for more headroom.
  3. Lower the input gain/ratio on the Chase Bliss CLEAN to let the dual compressors breathe.

I was heartbroken when my EP-3 Maestro Echoplex (bought for 99 bucks in 1989 at the Starving Musician in San Jose, R.I.P.)
had its ceramic board broken. Replacements at this point are very expensive and have maintenance issues that I don't
want to handle.

So . . . a pedalboard that functions like an EP-3. Lots of choices for the echo sound -- you know them -- but very few
for the feature I valued most. Jimmy Page can keep his pre-amp (but yea, I like it too), I want the SOS, Sound on Sound!

Yea, yea, the El Capistan. I have V1 and like it but not the mono -> stereo bit. Paired with the MXR Mini-Booster it does
sound close to the original EP-3, I'll admit.

But the Volante won out. For the moment. There's the ECCOS to try! What are your suggestions / boards that do the same?

I miss the way the sound loops slowly faded out . . . digital is much too clean. Haven't found the right setting in the Volante
yet to capture that part.

EDITED Aug 17th, 14:44

Herding Emus is definitely wild -- half the fun is doing it blind!

Not quite a trad drone but it can do them; this one (16 hp) has an expander for v/oct:

https://modulargrid.com/e/blukac-endless-processor-both-panels

EDITED Apr 5th, 14:08

For a compact solution, I have pre-ordered this one:

https://modulargrid.com/e/noise-engineering-multi-repetitor

https://reverb.com/item/94330950-malekko-voltage-block-2010s-silver

(not the seller, just looked it up on Reverb.com)

I see it sold now -- hope VONDENFUNKEN got lucky!

EDITED Feb 3rd, 15:52

Check out some of Boredbrain's modules like:

https://modulargrid.com/e/boredbrain-music-unifx

https://modulargrid.com/e/boredbrain-music-xchangr

(the above is a great one for ya)

https://modulargrid.com/e/boredbrain-music-injectr

EDITED Jan 22nd, 18:15

Guess it depends on how far you want to go but Jake's Custom Shop do a Eurorack DMX controller

There's a video on it here:

-- andydavies

Bought a musical clock divider module from Jake's and was pleased with it and his service. Have not tried his lights, though.

The OCHd expander is actually four hp, not two as I stated. Been a while since it is not in the rack I'm currently working on.

Still -- lots of lfo / trigger additions on it.

I have the Indian Resonator from Error Instruments and the new Bloom v2 (excellent!), so we must have some common tastes.

Haven't tried the Brinta, but I do have their White Rabbit, which I highly recommend, along with you adding the
expansion to DivKid's OCHD! Only four hp and has a lot of added punch.

EDITED Jul 1st 2025, 16:34

I'd drop one of the VCOs to add the DivKid Ochd expansion and maybe another small filter. It really opens things up.

A word in favor of the PM Okapi -- I have a stereo setup, with two stereo Okapis run through an Erica Synths Black Stereo mixer.

That gives me 8 inputs (4 per Okapi) so that each one's 4 inputs go into a left and right channel, taking up two of the four stereo pairs on the ES mixer (between them is a Xer Dualis for another 8 input stereo pair in the ES mixer, and a 2hp VCA gives me the final stereo pair). So basically I can have 18 inputs into the ES mixer, nine inputs per left or right channel (!).

What really rocks about the Okapi, however, are the light indicators! Just glance down and if you see red, turn that input down a bit (and vice-versa). It is very helpful to have visuals in mixing! Something to think about long-term if you want to expand to stereo. This is sort of hard to explain, so here's the setup (a 6U Doepfer L-base and a separate 6U standing on it).

EDITED Sep 4th 2024, 03:04

I have found with 2hp modules -- like the Plucks -- that they are so thin and delicate (the backing comes off easily), that it is better to separate them with a four hp or bigger module. Also (depending on the separating modules) it makes it easier to tweak them, as the identical cables side to side make that difficult.

Otherwise, looks like you are in for some fun!

Here's a unique and terrible idea.
Drop the A-111-6 voice for an A-182-1 switch mult, and two 2hp pluck modules.
-- lumpytapioca

I have 2 Plucks and liked them so much, I added a Bell, lol!

The tone of Plucks is so unique and shapeable.

That Hysteria module is a lot of fun (and modulates, as well!).

I come from a keyboard / guitar background, and like to have a module that will allow me to export
Eurorack cv to a guitar pedal and bring back in (preferably in stereo). Cheaper than Eurorack modules, guitar
pedals make for interesting sound effects (the Drolo Stretchweaver pedal -- wow!). Even an EQ pedal works
well for less money. No external sound effects in your system?

Bored Brain has some of those interactive modules with external guitar pedals, and others. Worth exploring!

I meant a Eurorack module similar to that delay
-- guidocbt

I know, but anything that doesn't take up hp is fine by me 8'). Try finding a Stretch Weaver module! Nope,
but you do with a pedal. . . .

Haven't seen one, but since they did do a module for their Afterneath pedal, there's a chance
they may for the AR. I use pedals with my system, and there are several ways to interact.

Here's an article about using control voltage specifically with the AR pedal --

https://eqd.my.site.com/url/s/article/Using-Control-Voltage-with-the-Avalanche-Run

I use the Unifx, but of course it is only mono. For stereo pedals I use a dedicated Audio I/O --

https://modulargrid.net/e/intellijel-audio-i-o-2023

I'm a fan of the Nautilus, for delay and effects:

https://modulargrid.net/e/qu-bit-electronix-nautilus

Seems faster than the old server!

Maybe something like this?

https://www.modulargrid.net/e/blukac-endless-processor-both-panels

Both a guitar and a pedal input / output would be ideal for you. Not familiar with the Befaco mentioned previously,
but check out what Boredbrain has --

For external guitar pedals:

https://www.modulargrid.net/e/boredbrain-music-unifx

And from another company, Noise Engineering, the Nive grad guitar input is good (you'll need a 1/4 > 1/8 cable adapter
which are cheap):

https://www.modulargrid.net/e/noise-engineering-nive-grad

Both are smallish and work well!

EDITED Mar 21st 2024, 12:54

Not familiar with Bloom, but I have the Blukac's. I've not had a chance to use that case much lately, but when I was playing around with it, I found it mildly interesting, and am hoping the expander will open it up more. The expander comes in two parts (with no directions in the box, btw), with one snapping onto the back of the EP, increasing its physical depth, and another module that increases the hp by 4. It is supposed to add v/oct, which should make it shine, but beforehand you have to upgrade the firmware, requiring an online search to do so. I have not had time to do so, so I can't comment on the expander yet. I did notice that having the expander extension on the back of the module does not seem to affect the original operation, so I've manually installed it (hopefully correctly!) and will eventually get around to upgrading the firmware. You need a SanDisk, btw, not provided, to upgrade. Until then, I'll just play around a bit with the original EP. It does what it says, but I don't think I've used it enough to give an opinion on it.

EDITED Mar 15th 2024, 01:04

I'm fond of this filter:

https://www.modulargrid.net/e/eowave-tempete-magnetique

and one that is smaller:

https://www.modulargrid.net/e/supercritical-synthesizers-neutron-flux

For "dark ambient" the Nautilus as a delay processor would be a good addition:

https://www.modulargrid.net/e/qu-bit-electronix-nautilus

Now that you are "down the rabbit hole," you'll constantly switch modules and such in search of what is best for you.

Have fun 8'). Think of it all as a haiku poem, getting as much out of a small framework as you can. Going big prematurely
costs a lot and can be wasteful. Concentrate on one module type at a time, and winnow things down.

EDITED Mar 5th 2024, 22:39

Final question is how are you taking this out to your speakers/computer? Do you already have an outboard mixer that can take eurorack levels? Otherwise I'd recommend an output/euro-to-line module, or those Mixup knobs are going to be pretty much at minimum all the time.

This is a good, small output / euro-to-line module:

https://www.modulargrid.net/e/bastl-instruments-ciao-

That said, odd-numbered hp items (Ciao! is 5 hp) require another odd-number as racks are even-numbered,
or at least a useless 1 blank. I agree with above you need an lfo, and the Pico line has 3hp lfos that would
make an even number (8).

One annoyance on using ModularGrid is that, while things look great "on paper," so to speak, you'll find
that power cables come out of modules in different ways, such that some cannot be placed side-to-side
or on the far edge, as the cable won't fit or will clash with the body of the module beside it. It would be
helpful (but a programming nightmare) to have the reverse side of modules shown, indicating where
the cables are.

Obviously they have two strike inputs, but I haven't used them for that. I'll experiment 8').

You can send an envelope into the aux and aux in, but that would only make it an envelope follower, so to speak.
Just got it recently, so still playing around with it, but, as it is described, it is just an lpg and mixer.

What is your take on this

Here's my main rack (actually two, both 6U, the bottom is an L-shaped Doepfer base):

On the bottom left corner is an Erica Synths Black Stereo mixer that accepts four stereo pair 1/8 modular inputs, and
outputs to the (originally mentioned in my first post here) Intellijel Audio I/O as a final stereo mix. The Audio I/O sends the attenuated stereo signal to my external mixer. I'm like you, in that I don't have much use the for the left side of the I/O, tbh, although it's there if I want to bring in semi-modular 1/4 outputs or loop a guitar pedal --
for my other rack that does just that, I use this:

https://www.modulargrid.net/e/boredbrain-music-unifx

There's probably a smaller hp solution for what I use the Audio I/O, but hey, you work with what you have!
I have fiddled around a long time to get the main rack I want, taking cable distance, work flow, and all that into account,
and am happy with this. Ideally, the ES Black mixer would be next to the Audio I/O, but I tried that and
for some reason I've forgotten it didn't work for me . . . note that I have three dedicated sub-mixer modules in
the center of the rack to feed into the ES Black mixer, with L/R signals of each taking up one of the four stereo pairs, and leaving a stereo pair vacant for whatever needs special attention. But that's overkill for your system!

You can always expand 8').

EDITED Feb 13th 2024, 21:38

Check this out: converts digital to analogue, is passive, attenuates, mixes, mults, AND is a clock divider -- all in 4 hp!

https://www.modulargrid.net/e/wavefonix-r2r-dac

EDITED Feb 13th 2024, 13:46

I currently use the mixer that was provided with the Moog Sound Studio (4 mono or 2 stereo), but I was planning on doing some in-rack mixing too (using the VCA Out on the Moog to get modular level). Why are 1/4 cables "the way to go"?

-- blaaank

K, not familiar with it; once I went modular, semi-modular seemed a bit boring, haha (although I cherish my 3 rack Moogs and Make Noise). Mixers that go into computers are expensive 8'/.

Adding an additional track doesn't mean upgrading the mixer. Excuse my love of guitar pedals with synths, but this
pedal allows you to input 3 different 1/4 cables from your semi-modulars to go as 1 track in your mixer, while being
able to "attenuate" each, to use modular speak:

https://reverb.com/item/79010042-old-blood-noise-endeavors-signal-blender-2019-2021-graphic

I actually have two Signal Blenders, so that my Moog 3-some rack can be all one mono output, and my Make Noise 3-some rack is a separate all in one mono signal to combine in a stereo send to the mixer. The great part is that you may attenuate any 1 semi-modular without affecting the others (i.e. Subharmicon too loud, but needed for internal mix, or one, two, three of the Make Noise semi-modulars needs to be less loud). Again, love the infinite combos!

[note: not endorsing any link I posted, just giving an example]

EDITED Feb 11th 2024, 21:13

I currently use the mixer that was provided with the Moog Sound Studio (4 mono or 2 stereo), but I was planning on doing some in-rack mixing too (using the VCA Out on the Moog to get modular level). Why are 1/4 cables "the way to go"?

-- blaaank

I'm speaking of a non-modular, external mixer. Those are generally 1/4 inch cables (as are pedals, but you don't seem
interested in those, fair enough). For this simple example, 8 direct 1/4 inch inputs from all or any of your semi-modular Moog family can be mixed in with any 1/4 outputs from your separate modular racks (provided by the Intellijel or similar I/O).

https://www.sweetwater.com/store/detail/Mix8--mackie-mix8-8-channel-compact-mixer

Fairly cheap but powerful, especially if you are recording. I don't use DAWS, just Reaper through a Scarlet Focusrite to record off my mixer into the computer. Well, I did, but I upgraded my mixer so that it can go directly into a USB of my computer without
the Focusrite. Always an evolution. . . .

For about the same price, two studio monitors could easily be attached to the mixer, as well. Not sure how you listen to your patching?

EDITED Feb 11th 2024, 18:06

Keep in mind with the Intellijel I/O that you can use 1/4 inch cables of the sound outputs
from the Subharmonicon / Moog32 / DFAM to input directly into your Eurorack on its input side
as 1/8 inch cables, and then out again as a whole with 1/4 inch output cables (or 1/8th if
directed into any of the semimodulars). Do you use an external
mixer unit? I found that helps immensely to bring everything together, and 1/4 cables are the way
to go.

If you ever want to use guitar pedals as an extraneous modulation, it is simple to loop through
those as well.

I love the possibilities with Eurorack!

EDITED Feb 11th 2024, 00:56

I love my Intellijel Audio I/O:

https://www.modulargrid.net/e/intellijel-audio-i-o-2023

which can both input and output in just 10 hp. The Ochd - expansion combo rocks! Highly recommended.

There are options! Try www.reverb.com which is full of musicians selling stuff to buy stuff from other musicians in sort of
a cake-walk way, lol.

What else do you think pairs well with the Pluck? What else have you used today would feel is shoes?
-- buzzsawddog

Try having several Plucks -- and a Bell, of course! -- receiving triggers and v/oct through the Mystic Circuits'
IDUM with Tree and Leaves. Lots of fun 8'). A twist of the IDUM nob and the variations are very pronounced.

Are you happy with the module for your musical needs - has it been fun exploring what you can get from it?

-- EuroBadger

I can't claim no, as I have versions 3 & 4! Only IR4 is installed atm in my larger rack, while I'm learning new modules
in a smaller rack, so I haven't puttered with it lately. In addition to modular, I have guitar pedals, and the IR4 paired well
with an Electro-Harmonix Ravish Sitar: I used a Boredbrain UniFX module to send CV out to the guitar pedal and back
into the rack, and as parallel sounds, the two complement each other in an exotic, Eastern music way. Error Instuments
makes fun and very unique modules!

EDITED Dec 27th 2023, 13:12

I haven't done it yet, but I bet an Indian Resonator 4 through a Nautilus would be interesting! I have two IRs, the earlier version didn't last very long, and they sent me a hard fix, but instead I bought version 3 as I didn't want to bother, lol.

The new 4 hp expansion for the Ochd is awesome! Just looking at your small case made me wince that there
was no room for it if you did use an Ochd. 4 triggers, 8 waveshapers would really expand the capabilties of
the small case.

I'd seriously consider a smaller 8 hp uRings instead of the original Mutable Instruments
to make space for it -- that would also clear up another 2 hp for a useful 2HP (company name) Clk
or a 2HP Mult.

I really like the Clep Diaz, but that's more rhythmic, and the Ochd would be more fun than the Doepfer.

It's synchability is not strict, of course, but that's its charm!

Got mine yesterday, and it rocks! I second that about telling us how the two expansion cables are run. I tried parallel with the sideways -12v on the mother Ochd pointing outward, and after a nervous try, it seems ok.

Having triggers running alongside the lfos is amazing!

All four??? That is heart-breaking. Expect to see Reverb second-hand prices sky-rocket!

Thanks for the insight, Sweelinck. I read in that link "it has been a bleak year for us," so maybe
sales are down anyway.

EDITED Sep 3rd 2023, 11:43

Just saw that the Noise Engineering Basimilus Iteritas Alter is being discontinued. I thought, ok, maybe
an upgrade coming, but who knows, maybe the market is flooded and they are cutting their losses.

EDITED Sep 2nd 2023, 23:08