Purchased new and used a few times in band practice. It has a built-in dummy load, allowing for silent recording, IR loading, and the use of a virtual cabinet – a truly comprehensive amplifier. I was informed at the time of purchase, "Please do not switch the dummy load switch while the power is on." I will pass this information on to the second user. It seems that high voltage can cause the switch contacts to fail. Please turn off the power when switching between the dummy load and speaker. USB cable is not included. Output (Peak): <4W switch selected> 10W@4Ω, 5W@8Ω <20W switch selected> 50W@4Ω, 25W@8Ω ■ Output (RMS): <4W switch selected> 2.4W@4Ω, 2.6W@8Ω <20W switch selected> 23W@4Ω, 22.4W@8Ω ■ Vacuum Tubes Used: 12AX7 x 2, 6V6 x 2 ■ Controls: [Front Panel] Gain (Pull - Boost), Treble, Middle, Bass, Volume, 20W/4W Switch, Pre/Post Switch, Level, Virtual Cabinet, Standby Switch, ON/OFF Switch [Rear Panel] Ground/Lift Switch, Impedance (8Ω/4Ω) Switch, Internal Load/Speaker Switch ■ Input/Output Terminals: [Front Panel] Input, Headphone Out [Rear Panel] Power Input, Cabinet Lightning, MIDI IN, USB, Bias Test, XLR Balanced Output, FX loop (Send, Return), Speaker (1/4”) ■ Tone Control Range: [Bass] ±15dB @110Hz, [Midrange] ±9.6dB@550Hz, [Treble] ±19dB @10kHz ■ S/N Ratio: 37dB (standard) ■ Power Supply: 100VAC, 50/60Hz ■ Dimensions: H168 × W308 × D165mm ■ Weight: Approximately 3.8kg ■ Made in CANADA