I had an attenuator built for me by an electronics engineer few years ago and its worked great. I can get real low bedroom volumes from it that sounded fine until now. I've used a Trainwreck Express and a Marshall 1987 through it and they both sounded fine. Used my new 1 Watt Marshall through it and it sounds like the attenuator has taken away all of the distortion. I think this is because the high attenuation is killing the high end. Is this an issue any of you have? I'm guessing a 0.1uF Cap on the Rheostat would fix it.
The other weird thing is that the amp has an inbuilt attenuator that takes the volume down lower than my external attenuator can (I use them seperately not together) and the amp sounds fine using this. All I can think of is the attenuation resistors inside the amp are carbon film whereas the external attenuator has big wirewound resistors which will have much higher inductance.
Attenuator Bright Cap
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