Relay Switch for Spring Reverb II

ATMEGA328P-PU

With ARDUINO bootloader

Relay Switch uC for Guitar Effects Bypass

Pre-programmed mcu to control up to 3 relays with 3 footswitches.

V4220M Coolaudio

Low-Cost One-Chip Multi-Effects DSP Functionally compatible to AL3201

Reference: IC-277

ISD1760PY

V2902

Octaverb pre-programmed uC

Reference: IC-295

Microchip MCP4162-503E/P

Digital Pot

ATTINY25-20PU

Microchip 25AA1024-I/P eeprom

SPI EEPROM

V1000 + V4220M Multieffect DSP

Low-Cost One-Chip Multi-Effects DSP Functionally compatible to AL3201

Coolaudio V1000 DSP

Low-Cost One-Chip Multi-Effects DSP Functionally compatible to AL3201