NOTE: This is an older version that uses non-latching relays. It otherwise has all the same features. It's discounted because it's being discontinued. Newer one here.
This is a true-bypass relay bypass kit for your DIY pedals. It has EQD-style hold functionality, optional optocoupler muting, and more.
See more details here: https://mas-effects.com/relay-bypass/
Base price includes PCB with pre-assembled SMD components, and a pre-programmed ATtiny microcontroller (IC).
For a few dollars more you can add the rest of the parts to build this (note the first two may be hard to find):
- Voltage regulator
I also have a reduced cost earlier version of this, which is just as capable though slightly less convenient.
Build docs here: https://mas-effects.com/relay-1.2.pdf
NOTE: this uses a standard non-latching relay. It's not suitable for use with a battery or when you have limited power available. A latching version will be available in the future.