GUITAR HEAD AMPLIFIER Invective ™ .MH. Guitar amplifier in lunchbox format (mini head) .20W. 2x EL84 power valves and 3x12AX7 / ECC83 preamp valves. Two selectable pedal channels. Canale Clean with 2-band EQ. Lead channel with 3-band EQ. Boost + Gate & Loop, footswitchable. Loop effects with buffer, manageable by pedal. Risonanza and Presenza controls. Valve status indicator with TSI ™ circuit MSDI ™ output with XLR and ground lift switch. USB port. Switch to exclude the speaker. Headphone output. Dimmer switch for 20W, 5W or 1W output. Foot switch included. Impedance switch for 16 or 8 ohm screen.