Valeton GP-200 Multi-FX processor

[AlbertA]

GP-200 Aliasing test (hear that wobbling, going backwards tone as the main tones are going up? that's aliasing)

Amp block only enabled
UK-800


With the NAM 2203X capture



For comparison, below is a similar test comparing the ToneX software, pedal and Axe-Fx III:

Post in thread 'Modelers and Aliasing'

Mar 19, 2023

Here's a comparison of the Aliasing performance between ToneX software vs ToneX Pedal vs Axe-Fx III using @jay mitchell's aliasing test signal.

The ToneX software plugin and pedal are running the JCM800 capture by SDS and the Axe-Fx III is running the JCM800 model matching the settings visible in SDS's video (which puts in the neighborhood gain and tone wise).

First ToneX Software plugin running at 48KHz, then ToneX Pedal, then Axe-Fx III


I don't hear...

• AlbertA

• 

 

[AlbertA]

OK I tried to use the built-in stuff to get a Metallica MOPish era sound going but it's just a flubby mess.

So NAM/Tone3000 to the rescue:
I used "Hetfield Rhythm" from this Mesa IIC+ capture": https://www.tone3000.com/tones/mesa-boogie-mark-iic-essentials-pack-2561

And I Imported York's Audio MES 212 V30 "YA MES 212 V30 57-1" IR from the Natural Phase singles folder.

 

[AlbertA]

Gut Shots



Bottom cover - Are those pieces of metal to prevent flex on the top plate (where the switches are) ?

 

[AlbertA]

Footswitches board

 

[AlbertA]

Expression Pedal Board and mechanism

Looks like its functions optically with an infrared emitter and receiver

 

[AlbertA]

Micro-controller, DRAM and Flash

Looks like a Cortex M7 @600Mhz, with built-in display controller with 2D graphics acceleration
32MB of DRAM
8MB of Flash

i.MX RT1050

i.MX RT1050 is a high performance, low power crossover MCU powered by the Arm Cortex-M7 core running at 600 MHz with 32KB/32KB I/D cache. Supported by MCUXpresso.

www.nxp.com

W25Q64JV - Serial NOR Flash - Code Storage Flash Memory - Winbond

Winbond Electronics Corporation Specialty Memory IC Company engaged in design, manufacturing and sales services

www.winbond.com

https://www.winbond.com/resource-files/w9825g6kh_a04.pdf

 

[AlbertA]

ADCs and DACs
ES7242 ADC

http://www.everest-semi.com/pdf/ES7243%20PB.pdf

ES8156 DAC
http://www.everest-semi.com/pdf/ES8156 PB.pdf

 

[AlbertA]

Well I had fun with this little device, I'd say well done Valeton. I'm looking forward to the next iteration of this platform - assuming they keep the price in the same range -

or make a small iteration of this same platform but

• increase flash storage to 32MB or 64MB
  • Then you would have tons of room for NAM captures and IRs
• Make a "moveable mic" UI for the cabinet (now that you have lots of room for IRs)
• Support temporary mode for the switches (they could do that in a software update on the existing platform)
• Support some parallel FX (to a reasonable degree, say for Delay and Reverb blocks)

For now, it's back on the box ready to be gifted to family.

 

[Tony_13]

Hi!
I found interesting Graphic Mod for Valeton GP-200 with real name and visual for Preamp, Distortion, Amplifire & Cabinet for Windows OS. What do you think about it??

 

[JCW308]

Would you choose this over the POD GO after spending some time with it?

 

[Tony_13]

I have no experience using POD GO, I had a few BOSS processors and that Valeton. But I see some problems in Valeton GP-200 after 1,5 year using in schematic and sound effects. And it is fact, GP-200 not ideal, but it is a good processor for it price.

And now I create few drive, clean and acoustic sounds by IR and NAM and for my purposes this is enough.

 

[AlbertA]

 

[AlbertA]

 

[Lysander]

I found interesting Graphic Mod for Valeton GP-200 with real name and visual for Preamp, Distortion, Amplifire & Cabinet for Windows OS.

I'm sorry, aren't you the person selling it?

 

[MadMaxG79]

I'm sorry, aren't you the person selling it?

Yeah, the way that post was worded, that wasn't really clear and kinda stinks...

Besides, I would never
1. install a software mod that would seize to function the moment I update my firmware and
2. pay for it...

 

[LP59]

Something's not right. He's complaining about latency, but Leo Gibson measured about 3 msec, which isn't bad. Ola does a "latency" test, but he's confused and is not measuring latency.

 

[AlbertA]

Something's not right. He's complaining about latency, but Leo Gibson measured about 3 msec, which isn't bad. Ola does a "latency" test, but he's confused and is not measuring latency.

I think he's measuring correctly as it matches what I measured (I measured around 5.2ms):

Post in thread 'Valeton GP-200 Multi-FX processor'

Jun 7, 2025

Latency is about 5.2 ms and doesn't matter if the whole chain is bypassed:

With this chain:




Same with everything bypassed:

• AlbertA

• 
• 

 

[LP59]

I think he's measuring correctly as it matches what I measured (I measured around 5.2ms):

That looks right, so I don't know how to explain how Leo got 3 msec. He might have been using a different effects chain.

 

[Sedaxel]

He not only measures it, but also says clearly the he notices it with the first strum. And that's the jist important test.

With the QC or NC he doesn't feel it.