Dual 12AX7 tubes biased at 250V internallyAluminum die-cast chassisSwitchable 20dB nuclear gain boostUnique bass control adjusts the resonant speaker responseScoop control for massive tone-shapingAdvanced-order treble control for detailed high-end responseComprehensive LED indicatorsPower supply includedRemote switchingPacked Weight: 2.70 kgPacked Cube: 0.01 m³Country of Origin: United States of America