DSL1HR:
2 x ECC82 3 x ECC83, authentic DSL tone, 2 footswitchable channels classic gain and ultra gain, tone shift button which reconfigures the mids, deep button which adds a resonant bass boost, independent volume and gain controls for both channels, shared tone controls for treble, middle and bass, emulated line output, series FX loop, low power switch from 1 watt to 0.1 watt