this thing work> tube amp volume box

[Bigfknbang]

http://cgi.ebay.com/Tube-Amp-VOLUME-BOX-MARSHALL-JCM-900-800-2000-DSL-/130376939607?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item1e5b123857

[toejam]

It's not an attenuator. It's like putting a volume pedal in your effects loop.

[Bigfknbang]

eh.. i might as well get a volume pedal. thank ya!

[Hellbat]

Yeah the circuit diagram for that is going to be - Input Jack -> 1M ohm potentiometer -> Output Jack.

Except this one goes to 11...

[Twitch]

The thing is totally bunk. You might as well keep the master of the amp down and save your self some money. They just add a pre phase inverter master volume to a post phase inverter master volume amp. Attenuating the preamp level down is actually the opposite of what you want to get that cranked tone. However, if you have an amp with a super touchy master volume(for instance 1 is too quiet and 1.3 is wake the dead) then these have their place, but dont think for a minute that theyll get you that "cranked" tone.