Re: Ultimate Attenuator
no idea I think it's more than -30db but if you're interested, there are probably better attenuators for the money.
AFAIK this attenuator works by padding the signal with a resistor and then amplifying it to your desired level with a small solid state amp. I've never used one but it *sounds to me* like there are cheaper, better built, more reliable, more transparent attenuators out there. Some people on the web have really knocked the build quality, the fact that the resistance seems fixed at 32Ω (so it could be bad for your amp if you run 4Ω) while some have said it sounded great. So in the end you may like it or you may not.
I would get a Weber and be done. I have their cheaper model that is rheostat-based and it sucks tone at super low volume but most of the time it sounds great. The MASS series has a real speaker motor in it that helps the attenuator react to your amp they way your amp would.