Einstein effect loop hum

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mary04

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Proud owner of a Einstein combo. The Eini is the best sounding amp I`ve ever owned, and my list of pre-owned amps are long, very long. I`m never gonna sell this beauty!

This evening I experienced a way to loud hum when I for the first time tried a Boss CE-5 (chorus Ensemble) in the serial loop. Tried the parallell loop aswell, but the hum was still there. It didn`t matter if the pedal was activated or not, the hum was there all the time. On ch 1 mode 1 (clean) the hum was considerable lower, but still there. Only way to get rid of the humming noise was to disconnect the cables from the back of the Eini.

What can cause this? I dont think its the guitar cables, because I`ve tried a lot of different ones ending with the same sad story. I would be really grateful for all suggestions that could solve this problem.

Best Regards Mary04
 
I had the same issue with mine last year. Turned out to be a combination of the Pedal snake and a bad wallwart. Changed it all and no more noise.
 
Buy a BOSS PSA power supply. They're not too expensive and will do the job. Had the same thing going with el cheapo wallwarts. Even had a Korg (originally for some synth) which provided 600 mA, so I figured it could power more pedals when daisy chained, but it was causing bad hum even when just powering one pedal. And it had all the right numbers, but maybe wasn't stabilized.

If you don't like wallwarts, a battery is the best way to avoid hum in effects.

If you're going to use a lot of pedals, buy the Voodoo Lab pedal Power 2 Plus, great thing.
If you use, say, two or three pedals, order one from http://www.ollmann-elektronik.de. Go to "Netzgeräte".
Great guy, great power supplies. Way better than BOSS, filtered, stabilized, protection against shorts (is it really called SHORTS? I mean, come on). Try them!
Located in germany, though.
 
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