Announcing the launch of ULTRA
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Frank_Kreuzberg-Audio Frank_Kreuzberg-Audio https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=800239
- KVRer
- 5 posts since 3 Apr, 2026 from Berlin
Congratulations on the launch, that's a massive achievement. The journey you described from a slow HTML prototype to a full C++ implementation is something many of us can relate to. It is always a huge challenge to get a core DSP concept running efficiently in real time without compromises. The UltraWave oscillator concept seems very powerful, especially with the multi sampling aspect added to the wavetable paradigm. I am particularly curious about your approach to interpolation and preventing aliasing when you are morphing between different sample layers at various pitches. I'll be sure to check out the demo this weekend.
- KVRist
- Topic Starter
- 144 posts since 13 Jun, 2023 from Wellington, New Zealand
That's not available yet but coming soonEchoes in the Attic wrote: Fri Apr 03, 2026 12:54 pm Just tried the latest demo. Wasn’t mouse/trackpad scroll on controls going to be implemented? Doesn’t seem to be. Unless it’s a setting?
https://ultra.audio
Wellington, New Zealand
Wellington, New Zealand
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- KVRAF
- 2452 posts since 1 Jul, 2021
Watched some videos with sound examples, not going to demo, it is not for me.liquidsound wrote: Thu Apr 02, 2026 2:37 pm Download the demo for yourself if you are a musician.
This synth is exceptional.
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- KVRAF
- 12083 posts since 2 Dec, 2004 from North Wales
Thanks for letting us know.DCrown wrote: Sun Apr 05, 2026 3:24 amWatched some videos with sound examples, not going to demo, it is not for me.liquidsound wrote: Thu Apr 02, 2026 2:37 pm Download the demo for yourself if you are a musician.
This synth is exceptional.
X32 Desk, i9 PC, S88MK3, S1, BWS, Live + PUSH 3, Osmose, RedShift 6 Pro3, Tempera, Syntakt, Digitone II, OP1-F, OPXY, Eurorack, TD27 Drums, Guitars, Basses, Amps and of course lots of pedals!
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- KVRAF
- 12083 posts since 2 Dec, 2004 from North Wales
Is their anything official about Sampleconstruct (Simon) making a bank? Wave table samples seems to be perfect for his type of sounds (which I always enjoy). I think the twisted orchestral patches are the most interesting in the factory pre-sets so far (anything that shows of the ultra engine) - more please!
X32 Desk, i9 PC, S88MK3, S1, BWS, Live + PUSH 3, Osmose, RedShift 6 Pro3, Tempera, Syntakt, Digitone II, OP1-F, OPXY, Eurorack, TD27 Drums, Guitars, Basses, Amps and of course lots of pedals!
- KVRist
- Topic Starter
- 144 posts since 13 Jun, 2023 from Wellington, New Zealand
Mouse wheel scrolling of sliders and knobs is now available...Echoes in the Attic wrote: Fri Apr 03, 2026 12:54 pm Just tried the latest demo. Wasn’t mouse/trackpad scroll on controls going to be implemented? Doesn’t seem to be. Unless it’s a setting?
Download the new beta 1.0.11
https://ultra.audio
Wellington, New Zealand
Wellington, New Zealand
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Echoes in the Attic Echoes in the Attic https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=180417
- KVRAF
- 12004 posts since 12 May, 2008
Nice one! Works well. If I was being super picky I'd maybe make it a bit more senstive, calibrated like u-he or synapse, but what's nice about Ultra is that for click and drag on knobs (or three finger drag on a mac trackpad) it also keeps the pointer in the same place, so with a track pad you can three finger scroll for faster movement and when you let go the pointer is in the same place so you don't have to pull the pointer back over the knob again. One of those QoL things all plugins should do!ultra_audio wrote: Mon Apr 20, 2026 10:43 amMouse wheel scrolling of sliders and knobs is now available...Echoes in the Attic wrote: Fri Apr 03, 2026 12:54 pm Just tried the latest demo. Wasn’t mouse/trackpad scroll on controls going to be implemented? Doesn’t seem to be. Unless it’s a setting?
Download the new beta 1.0.11![]()
Sounds great by the way was just trying it again. Looking forward to MPE implementation and then I'll probably have to cave in and get it. By the way not sure if anyone has requested it but it would be super cool especially once mpe is there - custom modulation curves in the mod matrix mod slots is super handy. Actually I see you have a nice curve editor for the aftertouch. Applying this to each modulation assignment would be great.
Last edited by Echoes in the Attic on Tue Apr 21, 2026 2:15 pm, edited 1 time in total.
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Echoes in the Attic Echoes in the Attic https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=180417
- KVRAF
- 12004 posts since 12 May, 2008
After a bit more testing I gotta say wow what a great sounding synth! I hadn't given it much of a chance so far. So big sounding, yet present and punchy and clear. Nice work on the sound engine.
I like the look of it too. My one gripe with the UI and it's similar for other synths too like Serum 2, is that I really prefer to be able to see both filters at the same time. I don't mind tabbed oscillators and effects, but I always like to see the filters. If I could adjust it, I would put filter 1 and 2 side by side or stacked on top (maybe the mixer somewhere else) and have effects be tabbed somehow and not shown all the time.
I like the look of it too. My one gripe with the UI and it's similar for other synths too like Serum 2, is that I really prefer to be able to see both filters at the same time. I don't mind tabbed oscillators and effects, but I always like to see the filters. If I could adjust it, I would put filter 1 and 2 side by side or stacked on top (maybe the mixer somewhere else) and have effects be tabbed somehow and not shown all the time.
- KVRist
- Topic Starter
- 144 posts since 13 Jun, 2023 from Wellington, New Zealand
Well as it happens... we have built this and it's coming in version 1.1Echoes in the Attic wrote: Mon Apr 20, 2026 9:20 pm By the way not sure if anyone has requested it but it would be super cool especially once mpe is there - custom modulation curves in the mod matrix mod slots is super handy. Actually I see you have a nice curve editor for the aftertouch. Applying this to each modulation assignment would be great.
Clicking the small graph launches the editor.
You can edit the curve and add multiple points to it if you want.
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https://ultra.audio
Wellington, New Zealand
Wellington, New Zealand
- KVRist
- Topic Starter
- 144 posts since 13 Jun, 2023 from Wellington, New Zealand
- Does anyone actually use the transfer curve on the aux source? I've looked at a lot of presets for other synths and it's super rare.
- One idea we have is to replace the aux transfer curve with an amount knob, and maybe an invert switch. That would seem to cover almost every use that I have seen.
- You can't click and drag the small screen like in Serum 2. Clicking launches the large editor only. I find that interaction is a bit finicky personally...
https://ultra.audio
Wellington, New Zealand
Wellington, New Zealand
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Echoes in the Attic Echoes in the Attic https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=180417
- KVRAF
- 12004 posts since 12 May, 2008
Very nice! When you see the transfer curve on the aux source is the curve editor over to the right per mod slot? Is that like a “via” source which modulates the first source? Like an lfo as primary source modulated by a mod wheel on the same line? If so a curve editor makes sense for aux as well. You could have an lfo modulating something that is triggered with a mod wheel but not until the top half range, which can be useful if the lfo is modulating different things where some changes happen first and others later. Though I imagine you can also set up a new mod slot which is mod wheel modulating lfo amount for example and set the curve there. But why not have it an in the aux too to not have to do that.
If I’m even interpreting your question correctly.
If I’m even interpreting your question correctly.
Last edited by Echoes in the Attic on Wed Apr 22, 2026 12:58 pm, edited 1 time in total.
- KVRist
- 181 posts since 22 Aug, 2020
Wot?Echoes in the Attic wrote: Wed Apr 22, 2026 12:33 pm You could dogging slime have an log kick in [...]
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Echoes in the Attic Echoes in the Attic https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=180417
- KVRAF
- 12004 posts since 12 May, 2008
Hahaha that’s some serious auto correct! Let’s see if I can figure out what that was supposed to say…Old Norse wrote: Wed Apr 22, 2026 12:46 pmWot?Echoes in the Attic wrote: Wed Apr 22, 2026 12:33 pm You could dogging slime have an log kick in [...]
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- KVRAF
- 5573 posts since 30 May, 2006 from Hollow Earth
I never used it…ultra_audio wrote: Wed Apr 22, 2026 3:43 am
- Does anyone actually use the transfer curve on the aux source? I've looked at a lot of presets for other synths and it's super rare.
ABEFLGMOPPRRST 
- KVRist
- Topic Starter
- 144 posts since 13 Jun, 2023 from Wellington, New Zealand
We have an MPE enabled version of Ultra, if anyone would like to test it out, please let me know 
https://ultra.audio
Wellington, New Zealand
Wellington, New Zealand
