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.