This is one of the famous JCM 800 series, more specifically the 2205 model, the features include 50-watt (2x EL34 power tubes), 2 channel (footswitchable only), master volume, effects loop, and master reverb (also footswitchable). This all-tube head was made in 1987, and has survived well up to this point, however time had taken it's toll in a few ways. When I got it, it still had all the original power tubes and preamp tubes, which had pretty much used up their life, and needed to be replaced. Also I had to take it back to the tech again to replace some caps and a resistor or two, the values had drifted with age. When I got it back the second time however, it was great! I run it through a Marshall 1960AC 4x12 cabinet (4x25 watt Celestion Greenback speakers). It does have a few minor shortcomings, the biggest of which is the lack of a midrange EQ control on the clean channel. It also lacks seperate reverb controls for each channel, which is sometimes annoying.