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Einstein The Tube users...help

Hi, I am auditioning this great preamp. The sound is incredible! However, I am having serious issues with the gain. Even with the volume turned all the way to 0, I can hear music playing through my speakers. When I increase the volume knob just a tiny bit, the volume is VERY loud. This problem is present on all the inputs. I have tried different sources as well with the same result. This problem is making the preamp unusable for me which is a shame because it does sound GREAT. Any help would be greatly appreciated.
tboooe

Showing 3 responses by rhyno

rhyno's avatar
rhyno
649 posts
 
sure you're using all the right tubes in the einstein?

what's the input impedance & sensitivity of your amp? i know people using 100k input impedance w/ the einstein w/ reasonably sensitive speakers that don't have the problem you describe. i don't have it either, and am using Mac 501s w/ 20k balanced input.

fwiw, i would not add anything in the signal path. the unit is terrific and you should try to avoid altering the signal path (but i also agree, it should be easy for a tech to correct in the einstein)
rhyno's avatar
rhyno
649 posts
 
the unit uses 1 12UA7, and 18 of the 6922s. i'd confirm that the tubes spec'd are in there, that you have the problem regardless of source selected, and also if you have it on both RCA and XLR outputs.

the einstein doesn't have volume steps; its a continuous attenuator (not a ladder or shunt)
rhyno's avatar
rhyno
649 posts
 
why not just have a tech add a voltage divider to the +/- pins of the XLR outputs...play w/ values, but you'll shunt some of the output to ground, less output to the amp = more usable range of vol control
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