The A-190-4 looks like a pretty basic yet well-designed module to control and sync your modular with a DAW or a MIDI controller, basically anything that sends MIDI. That looks to be about all it does.

If you have any keyboard with MIDI out, you can plug it into the 190-4 and use it to control your modular system. Send the Gate signal to one of your envelopes. CV1 is pitch in the eurorack standard of 1 volt/octave, that goes to an oscillator. CV2 can be assigned to a different incoming MIDI signal, common uses would be velocity or mod wheel from your synth/keyboard controller.

Or, you can hook it up to your computer and use a software sequencer from your DAW or Reaktor.

It can do some other fancy things in the menus like setting portamento (glide), but I’d just focus on using it for bringing in Gate / Pitch for now. If you want to dig deeper, check the manual.

Anyone here knows about quantizing quantizers?

How effective would it be able to quantize it so it keeps its functionality but outputs voltage tuned microtonally?

You can certainly use quantizers in series but I’m not sure how well it’s going to work with a microtonal scale following a major or minor scale unless your microtonal scale was also 12 tones (or less) within an octave. A a 24-tet quantizer following a 12-tet quantizer would end up outputting the 12-tet scale unless I’m thinking about this wrong.

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It’s certainly possible to quantize the output of a quantizer as it outputs stepped voltage the same as it accepts on the input.
Personally I don’t see the point though. If you’re quantizing a signal twice the first quantizer will have little to no effect on the pitch unless it’s adding a significant offset.
I haven’t used Harmonaig but it seems like its greatest strength is its ability to create 4 related quantized outputs from a single unquantized input. ADDAC207 has this same mode from what I remember (although it does seem less streamlined) so I think if you want “Harmonaig but microtonal”, you could simply replace it with the 207.

I do not believe you can use the Harmonaig with microtonal scales.

The 207 has a feature for adjusting the v/o ratio, so you can easily hit 24 note and 48 note scales. This may or may not accomplish all you want.

One quantizing tool you should probably look carefully at is the Tubbutec uTune, which is all about microtonal work and can be expanded to many channels:
https://tubbutec.de/µtune/

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Yes, the uTune is the one I actually have for my microtonal duties. Shame that the expandability is not ready yet (as they haven’t released the expander).
What I was looking for is if there is a way to take advantage of Harmonaig chord/harmony capabilities but quantize it in order to have those chords in the scale set by the utune/addac 207. Afaik there is not a way to do this but I figured I’d ask…

My main concern is that while the 207 has similar features, the Harmonaig gives me four outputs in harmony. Again, what I’d like to know is if it’d be possible to transpose the voltage generated by the Harmonaig into another scale through a different quantizer.

Thanks for the answers, guess I’ll keep the uTune for custom scales and the Harmonaig for more straight forward uses :seedling:

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Another option would be the 4ms SMR. It has a 6 voice quantizer mode that is microtonal with fully editable scales and while it doesn’t give you advanced stuff like chord inversions in an easily accessible way, you can move around triads and 7th’s in the scale really easily.

Ah, sure. I think you could run the chords from the Harmonaig through the 207, with the v/o on the 207 adjusted, and you’d get microtonal results. But would simply “scaling down” the chords from the standard sort of Western music theory get you usable results? (I haven’t the faintest idea!)

If you already have a 207, you should be able to patch together a test. Simply manually tune some common Western triads by hook or crook (a MIDI keyboard would make this trivial), scale them through the 207 and see if you like the results.

I’m new to all this, but this is pretty similar to the one I’ve been toying with (pretend that I remembered the palette top row):

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Hello everybody hope whoever is reading this is having a good day/night. I’ve got a SD808 from Tiptop but the rear panel does not indicate where the red line should be. Can someone who has one as well look on theirs and lmk how to orient the power cable before I accidentally fry the thing?

According to them, it should be faintly labeled, but also according to their illustrations, red stripe should be down: http://tiptopaudio.com/support/

“Red stripe down” is not foolproof but it’s common enough that a modular musician named themselves after it: https://instagram.com/redstripedown?igshid=9hild1poib6v

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I guess I’ll just have to assume “red stripe down” based on the diagrams on their website… let’s hope she doesn’t get fried :grimacing:

I’ve never seen a TipTop module personally but that doesn’t look like a power header.

Edit: I’m wrong I guess?

That single strip is certainly a choice…I would reach out to TipTop directly to confirm.

It’s definitely the power header it was shipped to me already properly plugged in but I removed it without realizing it didn’t have any indication for the red stripe and since I don’t have photographic memory I can’t remember how it was oriented D:


Welp, let’s hope this works. About to power on

Would love to hear recordings of the module or you screaming as the magic smoke appears!

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hahaha am I able to put a video clip in this?

Welp, no smoke and all systems are functional. I was looking through the manual for the SD808 and it said nothing about the power cable. Thanks to you @xenus_dad and the link you provided I can now continue to use this module with ease.

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I’m a big fan of considering the computer a valuable eurorack tool (and just as fascinated by folks who swear it off too - part of the joys of modular: possibility), if you’re open to this - which means the MIDI connection can harness some truly unique and personalized sequencing power from the computer, especially with regards to arpeggiation, non-linear sequencing, or even taking conventional MIDI files/compositions, and re-imagining them within whatever options your setup affords you.

Another fun option that eschews computer MIDI would be to invest in an old school MIDI sequencer or drum machine - they can be very cheap and surprisingly deep options that are eurorack-relevant when you have the A-190-4!

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