Diamond Amplification PA100 Phantom 100W Guitar Amplifier 100 watts (4 x Svetlana EL34 - 6 x 12AX7) 2 fully independent channels (Channel 1 - Clean/Channel 2 - Crunch) Both Channels feature Volume, Gain, Bass, Middle, Treble, Presence Dual Volume/Gain Channel 2 (switchable, allows for two gain settings with 2 volumes for level adjustment to match volumes) Rear panel low frequency 3-position adjustment switch (allows for changing the amount and character of the bottom end - effects both channels)