I don’t have one yet so I can’t speak from direct experience, but I would find it surprising if Make Noise and Tom Erbe let something out the door with such an engineering flaw…

Not impossible, but certainly not what I’ve come to expect from them…

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Mine is as clean as a whistle.

With any module I would be suspicious of the PSU as a first point of call. Have you tried it in a different case/PSU?

The only module I’ve ever had noise issues with, on every case/PSU I tried, was the Bubblesound DiOD (which I believe is notorious for it)

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Great to hear! I don’t actually have mine yet, I just wanted to see if this was a problem lots of people were having or not. I guess those who are complaining of noise most likely have issues elsewhere.

I’ve never had any problems with noise from my Morphagene whilst some have complained about that as well - fingers crossed Mimeo will be fine!

Will there be Mimeophones finding their way into old Yurp any time soon?
I don’t think we’ve had any here yet. No rush just curious.

Looks like most Yurpean resellers just went through their second wave of Mimeophons, and I’ve seen friends play theirs. I’m getting mine tomorrow from the excellent Escape from Noise.

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You’re right! Just saw it on londonmodulars site now. (Thought I looked at EFN just the other day, but maybe I mis-eyed. Very good.

I can confirm I’ve had no additional noise on mine using the power supply from the Intellijel 7U cases

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It’s a gain staging issue. If I give Mimeophon a 1VPP signal and then boost the hell out of its output, I hear some gated noise. If I give it typical Eurorack signal levels and don’t amplify it much, no noise.

Maybe the amount of noise varies with different PSUs, but I’m guessing 85% of peoples’ noise problems come down to gain staging.

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I had the same exact experience - any noise I was noticing was eliminated when I paid closer attention to gain staging and didn’t crank my headphone output to excessive levels

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If I send nothing into the Mimeophon and just plug it out to my speakers I can noticeably hear a noise floor when the Mimeophon is set to Dry. Weirdly, it lowers as I move over to fully Wet.

To compare, if I send another module to the speakers the the noise floor is much less noticeable & more acceptable.

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I don’t have a Mimeophon, so I might be completely wrong. But with the Morphagene it can happen that it amplifies the empty inputs, which leads to noise. So there might be a chance that this is what is happening to you.

Have you tried setting the gain stage with a rather hot signal and then unplugging the inputs to test the noise when set to dry?

If I send nothing to the Mimeophon it’s totally silent when dry, or when wet unless Repeats is way up. I have to give it some input (at least a bit below the audible threshold) before the noise kicks in.

@boboter - yeah, I have the input level set to unity (green).

@Starthief - i’ve read some saying they have no noise and others saying they have various degrees of noise. I’ll hit up Make Noise and see if they have any insights.

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Also having noise issues, just emailed Make Noise support.

I’m getting a mix of the different characteristics described by @starthief and yourself - mine is silent when totally dry and no signal passing (no floor), but when I pass a sub-audible bump of signal in, still 100% dry, I get gated hissing noise - not super digital sounding, more like white noise. Mostly not getting noise when wet except when color is turned all the way to the right.

That said - I don’t think this is an issue with gain staging for me, the noise level is just too loud relative to the levels I can generate within my rack; I do wonder if there is some variance between units here, because I demoed a Mimeophon extensively at my local shop and didn’t notice anything like this.

I’d be interested if you or anybody else on the thread gets a resolution from Make Noise - either some kind of case/power fix, returning the unit, etc.

I’m probably going to take mine back to the shop, and A/B it against the demo unit and see what I find.

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When I get a chance I’m going to pick a handful of these up. I’ve always been curious. Someone on muffs posted this example and wow…it’s helps in this users situation with a noisy module.

https://www.midi-hardware.com/index.php?section=prod_info&product=NKP

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Just an update - I went back to the shop and A/B’d a few different Mimeo’s on my dealer’s system. Definitely a substantial noise problem on all the units, not just mine. Not super noticeable or problematic with bright or unfiltered sounds, but with delicate sines and triangles it’s really distracting.

This is really frustrating honestly - I feel like this might be the best effects algorithm I’ve ever heard, and having it spoiled by a noisy signal path is a bummer. I’m keeping my hopes up that there is some kind of software fix possible but I’m scared it’s a layout issue, and that this might not get resolved without a substantial revision.

I still wonder if all this variation is down to gain staging… if I set my levels so the output of Mimeophon is about 3VPP and set my audio interface inputs so they just barely don’t clip, there’s basically no noise. If I go quieter than that I start to hear a gated sort of white noise if I listen for it. (I kind of like the “crusty old DAC” effect that gives, but I definitely wouldn’t want it all the time.) I typically run at about 5VPP or more.

Or maybe there was a bad or mislabeled batch of parts, so a whole string of serial numbers are noisier than other batches of them…?

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yeah, I would not rule out a part/batch variation - all the ones I tested were from the second batch, and one of them did seem a bit less noisy than the other two. I hope that’s it - I just don’t see how something like this would get through the attentive design process this module clearly went through.

On the other hand, the company is called “Make Noise” ¯\(ツ)

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Well, I stand corrected, now that I’m trying some quieter/more sine based tunes with more space in them, my mimeophon definitely has some noise. It is funny that there’s more noise when it’s set fully dry…

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If you have a mixer with an aux send, try running it through the aux send, fully wet. I have no issues whatsoever with noise doing it this way. Even when I first bought the Mimeophon and didn’t run it through the aux send, I didn’t notice any noise that I can remember though. My tolerance for noise may by higher thatn yours though, I have a mostly analog system, with a spring reverb, and I feel like there’s always a little inherent noise here and there.

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