Features -All tube construction with 4 x 5881, 3 x 12AX7A tubes -4 x 10 Celestion Tube-10 speakers -Separate tone controls for clean and drive channels -Scoop switch on lead channel for heavy boutique amp lead sound -Expander switch on rhythm channel for unique variations of clean tone -DynaSound speakers compensated XLR direct output -DynaSound compensated headphone output -Parallel effects loop with trim controls on input and output -Internal Speaker defeat switch for silent practice or direct recording -DC powered filament supply on preamp tubes for reduced hum -Autobalancing bias supply means no need for matched pairs of output tubes or bias adjustments -Long Accutronics reverb springs for authentic vintage sound -Fully regulated power supply for ultra low noise -Conservatively driven output for extended tube life -Additional loop-through serial effects loop