With the new SVT-VR, the Ampeg engineering and product development teams had one primary goal--get as close to the coveted tone of the classic SVT as possible. As a result, the preamp stage, power section, and even the rocker switches of the new SVT-VR emulate the exact signal path, tone, and vibe of the original. The all-tube, 300W SVT-VR amplifier is driven by a total of 6 - 6550 power tubes for massive power and tone. In addition to the '70s style dials and rocker switches, the SVT-VR's preamp circuitry has been faithfully re-created to match the original.