Rocktron takes another step in their lengthy history of guitar power amplifiers with the new Mainline Power Amplifier, providing yet more diversity to the rack power amp genre.​ The Mainline is a solid state power amp with a new front end circuit that emulates that sought after tube "feel" found in classic tube amps. With a LA Custom designed filtering in the front of the amplifier, the sweet spot in tube emulation has been achieved. The Mainline has a proprietary circuit that truly emulates the way a tube amp interacts with a speaker. Typical solid state power amps do not know or care what they are connected to, so they tend to always have a flat response. The Mainline amps possess an enhanced frequency response that is very much like a tube amp connected to a speaker. This adds a level of warmth and clarity not usually found in solid state power amps. The Mainline Power Amplifier features additional circuitry providing an "instrument/line level" (INST/LINE) switch. The INST input allows you to run your pedals - or pedal board - directly into the amp without having to utilize a separate preamp. The LINE input allows use of a preamp in combination with the Mainline power amp, providing plenty of flexibility with the Mainline. Output Power (Unbridged) - 150 watts per channel @ 4 ohms (both channel driven), 75 watts per channel @ 8 ohms (both channels driven), 37.5 watts per channel @ 16ohms (both channels driven). Output Power (Bridged) - 300 watts @ 8 ohms, 170 watts @ 16 ohms. Input Sensitivity - -7.3dBu (0.335V RMS), 4W stereo for rated output at max. gain. Dimensions - 19"x 1 3/4" x 9 1/2", 483mm x 44mm x 241mm. Weight - 17.1lbs, 8.5kg.