True Bypassing an Arion Tuner

Started by jonathansuhr, March 17, 2009, 02:11:20 AM

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jonathansuhr

I've been looking for the input and output buffer circuit/switching circuit on this thing, and it looks different than other Arion pedals.

http://i43.tinypic.com/r27nuv.jpg
http://i39.tinypic.com/2m35r2o.jpg

http://i44.tinypic.com/8wdpms.jpg
http://i41.tinypic.com/14o3v5g.jpg

The IC is a JRC4558LD

All trannies except Q3 are C3198. Q3 is K772. Switch is latching DPDT, unlike other Arion pedals. I'm hoping that somebody's common knowledge of input and output buffers can help me figure this out. If not true bypass, are there at least ways to improve the buffer?

newfish

...or you could built an A / B looper- then you could true-bypass any tuner you bought in the future too...
Happiness is a warm etchant bath.

jonathansuhr

Gah, I hate loopers because they're such a waste of space on a board, even in a 1590A. I have a ton of loopers, but I would rather not use them.