Great choice for those who owns non-master volume guitar amp like "plexi", etc.
Of course usable also for those who owns master volume amps, but they want to crack the master volume to get that famous overdriven sound from the saturated power tubes !
I checked the silencer in both above described situations and it works perfectly !
The sound is really nice, rich and full, without any significant affection of the overall tone.
This particular type can handle either 1x16 Ohm cabinet, or 2x8 Ohm cabinets.
You are able to attenuate the overall volume of your amp in several steps (each = 2 dB) up to - 16 dB (using the left pot), but if you need you can go even lower (up to 0 db) using the right pot of the attenuator what is really practical if you want to crack the amp to the bedroom level and do not disturb anybody around.
Moreover, there are two switches that can boost / attenuate the overall height / bass in case of need (usually in case of extreme low bedroom level volumes).
SUMMARY : Highly reccomended "addictive" product !