The HT Studio 20 head is in great condition and is in perfect working order. This amp offers huge versatility for home, rehearsal or studio use and can be used with a variety of cabinets including the matching HT112 and HT212. The carefully voiced preamp coupled with a cathode-biased EL34 power amp, provides the user with the ability to create wonderfully lush valve tones. From pure boutique cleans, to mild overdrive that cleans up by backing off the guitar volume control, up to highly saturated distortion, this amp does it all.