The AD30HTC sports two dual stage channels with completely separate signal paths. The result is two vintage amps in one. Channel One has a thick, creamy, classic voice that barks like a rottweiler when pushed in to the tone zone. Channel Two has a tighter, springy and slightly faster character with a little more upper mids and a bit more gain. This amp has proved to be so popular worldwide that its specification remains unchanged. It is fast becoming the new world standard for 30 watt Class A valve amplifiers.Features:Controls-Master, treble, middle, bass and gain for channel 1 & channel 2Output Power (Heads and Combos)-30 WattsPower Handling (Cabinets)-NAValves (Heads and Combos)-Preamp: 4 x Ecc83/12ax7-Power amp: 4 x EL84-Rectifier: GZ34Speaker Output Options (Heads)-1 x 16 Ohm cabinet connected to the 16 Ohm output-1 x 8 Ohm cabinet connected to one of the 8 Ohm outputs-2 x 16 Ohm cabinets each connected to one of the 8 Ohm outputsSpeakers (Combos and Cabinets)-NAImpedance (Cabinets)-NAExtension Cabinet Options (Combos)-NAUnboxed DimensionsH (cm) 27H (in) 10.63W (cm) 55W (in) 21.65D (cm) 24D (in) 9.45Unboxed Weight16.5 KG36.4 lb