This is one of the first circuits I ever built due to the simplicity, and it's hard to go past as a simple boost with a bit of fattening up of the signal.
The Echoplex EP-3 preamp doesn't provide tons of gain, but it does work very nicely as a slight boost, or as an always on type effect. I plan on adapting this to be the front section of a Valve Caster, to provide some extra grit.
I used the Aion Electronics schematic, as I like the idea of the fat switch, but I did not include the volume control or output buffer. Pretty easy to add a volume control, I'm sure anyone reading this knows how.
ECHOPLEX EP-3 PREAMP - POINT TO POINT LAYOUT
Hello Andy.
ReplyDeleteI made ECHOPLEX_EP-3 Preamp to Klon Centaur Silver Edition by your layout.
Klon Centaur has fat tone on your layout EP-3.
Very COOL!!
I post it to my HP.
http://solderholic.html.xdomain.jp/img/file90.pdf
That looks really impressive - nice work. Can’t have been easy to make a Klon point to point.
ReplyDeleteThank you ,Andy!
ReplyDeleteDose ep-3 of your layout work good sound by +18V ?
Is 1st pin of fat SW to ground?
Thank you for spotting that. I've updated the layout, hope this hasn't caused any inconvenience. Pin 2 should go to ground, and the other two pins move to pin 1 and 2.
DeleteI haven't played it for a while now - I remember 18v just having more body to it.
Thank you ,Andy.
ReplyDeleteIt's meens Fat SW layout is same of Aion schematic.
Yes, should be the same now. Sorry about that.
ReplyDeleteI've just added 18v charge pump to mymade ep-3 .
ReplyDeleteit's very powerfull !!
Thank you for your advice.
No problem - it's a good booster with some tonal colour.
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