Guitar amps sound best when turned up LOUD! That is when we really start to hear all the richest harmonic overtones and feel the most dynamic response from the power tubes but thats alwayys TOO loud so we must compromise and turn down, losing that sweet tone...well, compromise no more, Carls Custom Guitars Speaker Soak allows you to dial in your favorite full volume tones and then attenuate the volume (without losing that great tone!) before it hits the speakers, all the way down to safe "bedroom" volumes if need be, simply insert this device between your amplifiers speaker output and the speaker itself (out from amps speaker output into IN on the Speaker Soak, OUT from Speaker Soak to the speaker, using speaker cables) turn the Speaker Soak up all the way, dial in your favorite full volume sound and then rolllllllll back the volume on the Speaker Soak, preserving all that rich tone at lower volumes! Some technical notes here: it is quite normal for this device to get warm, basically the more volume you are attenuating the warmer it will be so just give it a little breathing room on top of your amp or whatnot. It should never get HOT. Do not use this device on amps over 50 watts and be SURE you match ohm rating of your Speaker Soak with that of your amps output (in other words if your amps speaker output is 8 ohm, get the 8 ohm Speaker Soak, if its 16 get the 16). As long as your amp has no pre-existing problems and this device is used properly it will not harm your amp or shorten tube life any more than if you were running your amp turned up loud. I can not be help responsible if you use this on an amp over 50 watts or with a speaker load mismatch, the last thing I want is anyone harming a device I worked hard to build and/or something they paid their own hard earned money for, so please make sure you use it responsibly! Unlock a whole new world of tones, I look forward to doing business with you, thank you -Carl