Hydrasynth vs Multi/poly

A comparison thread is overdue! Just kidding - didn’t want to clutter up the existing threads by crossposting to two at once, but I’m fine if mods want to move it.

I got offered a good deal on a Hydrasynth desktop and am quite tempted as I have long admired the sound, But I’ve also decided to purchase a Multi/Poly in Japan next year, and I’m wondering if there’s such a big overlap in the sonic capability that it would be a waste of time/money to have/learn both. I know the specs of both machines well, and how they both feature an unusually high number of LFOs, deep modulation matrix etc. I’m also aware of the big differences in polyphony, timbrality, sequencing capability, user interface and so on.

But I do have a few questions that I can’t really resolve by reading the manuals, and would love input from people who own both, or even just one but have strong opinions on it, positive or negative. If I could only pick one it would be the Multi/Poly due to multi-timbrality, motion sequencing etc, but I’m fortunate to have options and I’m struck by how many amazing Hydrasynth demos are out there with some really unusual sound-shaping. Unfortunately the M/P demos are pretty lacking, and mostly just playthroughs of patch collections rather than really deep sound design. So I’m hoping you can help me decide and also drop some knowledge about these synths that might be useful to anyone who has one and is intrigued by the other.

  • Oscillator Mod/Mutants
    The Hydrasynth seems to have some advanced processing for the oscillators, such as FM , variable sync, PW squeeze, Phase difference and so on. The Multi-Poly has bunch of different modulators built into the oscillators, ranging from very basic to quite complex looking on the wavetable oscs. Figuring out how these shape the sound at a fundamental level has been difficult, since almost all demos you hear involve filters and FX as well, plus oscillators and oscillator mixing are something that take time to properly appreciate. How do owners feel about this stage of these synths? They both seem rather complex and elaborate compared to most other synths. By all means make comparisons to other gear if it helps.

  • Filters
    The fact that both these synths have 2 filters is a big plus to me. But again it’s a bit hard to draw comparisons. The Hydrasynth has a big selection of models for filter one and a simpler but good SV filter two. The M/P has a lot of ‘classic’ options plus the intriguing-looking multi-filters. Both seem to have abundant routing and modulation options. So basically, what are your subjective impressions - big sweets spots or tempermental to adjust, do they drive nicely, is the resonance polite or wild, does the bass die if the resonance is high, all that sort of stuff.

  • Effects
    Again they both seem to have a lot going on here, and the FX sections actually seem quite similar to each other architecturally. Anything you want to rave or moan about, I’m interested. Do you feel the effects are an essential part of each synth’s sound, or that they’d sound good and interesting even if you had to rely on external effects?

  • Modulation, arpeggiator etc
    Both synths seem to offer tons of it, with a great selection of sources and destinations. the M/P seems to offer a bit more in this department but it’s hard to tell. Likewise both synths seem to have very flexible envelopes with looping etc, but I am not sure if either allows envelope retriggering. Modulation is a big deal for me because I really like doing generative patching and it appears both machines allow you get a bit crazy in this department. Interested to hear about both ecstatic and nightmarish experiences!

  • weirdly specific chord question
    Though I’m blessed with gear I find I usually only use 1 or 2 devices on any given track, because I strongly prefer recording a live performance to editing and mixing multitrack recordings in a DAW. The Analog Rytm is my favorite song starter, and you can send MIDI out from any channel, though only one note at a time. I wonder how you think the HS and M/P perform when it comes to using single notes to trigger chords, with or without the arpeggiator.

  • Anything else
    Every synth has a lot of parameters that are not so exciting for reviewers to talk about but matter a lot - gain staging, build quality ups or downs, stereo field wins or Ls, too much or too little screen brightness etc.

Thanks for reading and I’m looking forward to hear about people’s experiences with these cool synths!

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Hey - are you aware that the native MultiPoly SW is true copy of the MP that you can use for free (for 20min, per start up I guess).
You maybe want to giving this a spin to get a better feel of they synth architecture.

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I would get the Hydra (keys) simply because it has endless encoders and I’ve heard programming it isn’t too annoying. It also sounds kind of special that you either love or not so much. I do like it a lot.

Well, I took both suggestions! The Multi/Poly plugin did not blow me away, but that’s because I hate clicking my way around an interface - the big attraction of the M/P to me besides the sound is the front panel. I did like what I heard, but I feel like I’d enjoy it much more working through the tiny LCD than in glorious technicolor inside the DAW. I’ll find out next year.

Meanwhile I went for the deal on the HS desktop and I am indeed in love with the sound. I would love to try it with the ribbon controller but the pads on the desktop model are very expressive and can also be configured to match specific scales, which a Thing I Like. Programming is incredibly fast and smooth, I was a bit worried about the page/encoder paradigm because I don;'t enjoy it so much on some gear but it doesn’t feel menu divey at all.

Thanks for your input!

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I personally enjoy the actual sounds my multi/poly makes more than the sounds my hydrasynth makes and find them pretty similar to program in terms of effort, though the multipoly is probably a bit harder just because it sort of has more of everything. Multi/poly has much better effects and is four part multitimbral and the layer rotate is pretty cool, and the motion sequencing gives it a lot of modulation you can’t really replicate on the hydrasynth.

This is about what I’m expecting. I do like the sounds on the M/P very much, and the multi-lane motion sequencing is very well thought out and seems like a great complement to an Elektron sequencer like the Rytm/OT/DN. I like Korg’s design approach and sound in general.

Meantime the Hydrasynth is rocking my world. It might be monotimbral but it’s an absolute beast, haven’t had as much fun with a synth since the Virus A came out.

the hydrasynth is quite fun, I’m just wealthy enough in synthesizers for it to actually be the least engaging one on my rack so I mostly use it as a polytouch keyboard (the multi/poly loves poly aftertouch…). I find its effects extremely underwhelming though.

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one other point about multi/poly native vs. desktop is that after using mine for a few weeks I realized that it’s pretty clear that Korg designed it assuming you will have the editor/librarian open on a desktop most of the time even when using the hardware. Building and saving presets and setting up motion sequencing are both substantially more annoying on device than they are in the editor and it is a bit annoying, but not impossible either.

Oh I didn’t notice the M/P handles poly aftertouch, yay. I agree about the effects being a little tame, but (kinda like the Octatrack) I look at them for sound shaping/wrapping rather than total transformation. The only very minor disappointment I felt about it was that you can only sequence 2 effects parameters from the mod matrix/macros (so not the flanger feedback for example), but this is more of a distraction than a barrier.

setting mod source/target in the multipoly is quite easy and fast and it handles poly aftertouch very nicely. like you can have it in mod source detection mode and do an aftertouch wiggle and it will know you want to use aftertouch as the source. pretty slick.

Part of why Korg did the Keystage controllers, which shares the keybed with the Hydrasynths, and is made to control the HW/SW of the Modwave, Wavestate, Opsix, Multi/Poly, and the as yet unannounced one.

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Don’t know anything about the Hydrasynth, but I have the Multi/Poly Native and this thing is a beast! Love it. I got LFO’s modulating LFO’s. The app makes it easier to understand the architecture IMO

You might want to broaden your search to include Multi/Poly Native to get more insights into the sound design possibilities

Also, there’s a demo available for you to try out: multi/poly native - ANALOG MODELING SYNTHESIZER | KORG (USA)


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