KVR Audio

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 7:54 pm

There are two types of producers: those who think this reverb sounds "too colored," and those who refuse to mix a track without it. We meticulously recreated this cult-classic unit because sometimes, perfection is boring. You use it when you want your synth to float in space, your guitars to smear into a lush nostalgic wash, and your mix to have a sound that's unmistakably its own.

Jeez. The author stated to me via private discord message that he was using the open source project for doing the emulation. For this one he's actually ripping open source, giving it a claude UI and taking credit to self-promote.

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 8:05 pm

I told him that I'd keep it quiet my suspicions about what he's doing but this I highlighted on the message above makes pretty clear to me that he's not legit. I post what I sent to him when I told him why I suspect he's ripping open source for profit.

Oh, I didn't know that this is MIT https://github.com/emeb . For this guy reversing took a lot of time.

I will explain the reason of my suspicions. The thing is that 3 of 4 your products now have Open Source precedents (Stargate, the DP4 TUS and MAME for the chips and the MV mentioned) and the metodology you have mentioned for the DP4 is only kind-of reasonable for the Stargate (which OSS project might have been used for training the model).

For the MV I already stated why. That text pointed to the exact mistakes that thement's implementation of the MV2 has: using the MV1 "parameters". That's what triggered me to comment about my suspicions.

About the DP4, it's a 4-DSP firmware-based beast. One gets nowhere with just the schematics and even the full DSP and microcontroller emulated. Without the firmware or a HW box there is no emulation possible. On GearSpace you seemed not to have the hardware itself. Black-box emulation requires the box itself and is seldomly bit-perfect (but the only legal way (which TBH I don't care, I like to see these emulated as much as you)).

So for me a very likely scenario given these conditions is that someone without a DP4 box is very likely leaning on other's work, like using existing MAME code (that Giulio from TUS has merged into) to spit the algorithms/instructions of the firmware by doing parameter sweeps (poor-man's recompilation kind-of) and keeping it closed source or plainly using an emulator (very high idle CPU on the DEEP4 fx-bypassed).

Also this completely overlaps in time with TUS going to release a DP/4, which is announced for months. The DEEP4 price doesn't match the capabilities and project complexity compared to the Stargates yet the price is similar. It's logical for me to assume a similar level of effort given the pricing.

About the stargate there was the greybox audio OSS.

But well, this is are only my suspicions. Glad to be proven wrong and see e.g a TC M3000, Lexicons and new stuff that no one is undertaking.

Hopefully that sounds reasonable. My only concern is about leaning on OSS for profit without contributing back. I concede that if you are legit I might cause undeserved damage, so I'll keep it quiet and balanced.

Uncle E · Post by **Uncle E** » Sat Mar 21, 2026 8:25 pm

Vintage button does a good job of making it sound like the real hardware, and that's why I prefer it off.

SAGG · Post by **SAGG** » Sat Mar 21, 2026 8:52 pm

Uncle E wrote: Sat Mar 21, 2026 8:25 pm Vintage button does a good job of making it sound like the real hardware, and that's why I prefer it off.

awesome!

zfyy · Post by **zfyy** » Sat Mar 21, 2026 8:54 pm

rafa1981 wrote: Sat Mar 21, 2026 7:54 pm Jeez. The author stated to me via private discord message that he was using the open source project for doing the emulation. For this one he's actually ripping open source, giving it a claude UI and taking credit to self-promote.

if that's true then what he's doing is more insidious than what discoDSP is doing and receives no flak for it lol. if he wants to clear his name he should open-source this plugin and posts his prompt chatlogs.

nonstatic · Post by **nonstatic** » Sat Mar 21, 2026 9:08 pm

So much for my assumption that the midiverb drama was over!

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 9:27 pm

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 9:27 pm

nonstatic wrote: Sat Mar 21, 2026 9:08 pm So much for my assumption that the midiverb drama was over!

Are there precedents? I guess you mean the guy that disappeared with the money bag

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 9:29 pm

zfyy wrote: Sat Mar 21, 2026 8:54 pm
rafa1981 wrote: Sat Mar 21, 2026 7:54 pm Jeez. The author stated to me via private discord message that he was using the open source project for doing the emulation. For this one he's actually ripping open source, giving it a claude UI and taking credit to self-promote.
if that's true then what he's doing is more insidious than what discoDSP is doing and receives no flak for it lol. if he wants to clear his name he should open-source this plugin and posts his prompt chatlogs.

This plugin has nothing over Thement's midiverb emulator other than setting the correct sample rate. That's all the vintage button does.

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 9:34 pm

Thement's plugin uses the mv1, mfx and mv2 at the same samplerate and bit resolution. The mv2 uses a higher sample rate. The change for making it correct is one line of code.

Anyhow, I'm releasing myself an evolved more festured oss/GPL version as soon as I nail a bug, so this one has no value open sourced, as there is basically nothing of relevance worth adding.

It would have been good etiquette doing it oss with right attributions though.

zfyy · Post by **zfyy** » Sat Mar 21, 2026 9:45 pm

rafa1981 wrote: Sat Mar 21, 2026 9:34 pm Thement's plugin uses the mv1, mfx and mv2 at the same samplerate and bit resolution. The mv2 uses a higher sample rate. The change for making it correct is one line of code.

Anyhow, I'm releasing myself an evolved more festured oss/GPL version as soon as I nail a bug, so this one has no value open sourced, as there is basically nothing of relevance worth adding.

It would have been good etiquette doing it oss with right attributions though.

i'm just saying, he should open source it to prove that he really did "meticulously recreate" it, and didn't just license-wash GPL code with claude and use it to promote his company.

rafa1981 · Post by **rafa1981** » Sat Mar 21, 2026 10:00 pm

I understand now

idoru97214 · Post by **idoru97214** » Sun Mar 22, 2026 5:24 am

Why does EVERYTHING on KVR HAVE to be an insidious plot?

legendCNCD · Post by **legendCNCD** » Sun Mar 22, 2026 1:37 pm

Maybe because people feel..

Teksonik · Post by **Teksonik** » Sun Mar 22, 2026 2:05 pm

idoru97214 wrote: Sun Mar 22, 2026 5:24 am Why does EVERYTHING on KVR HAVE to be an insidious plot?

That sounds like your insidious plot to disgrace KVR......

But seriously lets face it, sometimes there is certain disturbing behavoir by some developers and it seems like more now with the "Vibe Coded" generation.

I don't know anything about this particular plugin and I get easily confused by all the GPL/Open source talk but if someone is doing something wrong in this case then I'm opposed to that behavior.

If anyone has proof that Temecula is engaging in shady practices then lay it out in plain language so we can make our own decisions on whether to do business with them or not.

Temecula DSP MDV-II (Alesis MidiVerb II emulation) [Free]