I am selling my THD Hotplate (4-Ohm - Red) Attenuator. I will Let it go for $215.00 + Ship - it is currently out of stock and backordered on THD's site. They go fast I bought this a week ago from Lark Street Guitars It was used - I personally used it once, fully functional. I Just moved to a practice space - so I can turn-up and do not need an attenuator anymore. Here is the official info. Technically speaking, a Hot Plateis a "power attenuator." Once connected between an amplifiers speakeroutput and the speaker cabinet, the Hot Plate acts like a master volume control that lets you play your amp at any volume, absorbing most of thepower generated by the amplifier and passing a small part of the power tothe speaker. Your amp and its output tubes will still be cranked up, only now you'll be able to get the tone you want and control the overall volume after it leaves the amplifier but before it reaches the speaker. The Hot Plate also serves as a great dummy load and has an adjustable line out for recording. So if you live in an apartment and want to record your 100-watt Marshall, you can disconnect your speaker, use the load setting on the Hot Plate and go direct into your mixing board. There are five different Hot Plate models (2,2.7,4,8 and 16 ohms), and although they all perform the same function, youll need to pick the one that matches your amps impedance. Make no mistake, a Hot Plate is not just for a head-and-cabinet-type setup but for combo amps as well.