- PRE-AMPLIFIER: Transistor - POWER AMPLIFIER: MPT (MARK PROPRIETARY TECHNOLOGY) - Output power: 500W RMS @ 4 Ohm, 300W RMS @ 8 Ohm INPUTS: - INPUT: Impedance 1M Ohm, max. voltage 9 Vpp - EFFECT RETURN: Impedance 22K Ohm, max. voltage 10 Vpp CONTROLS | FILTER | SWITCH: - GAIN: -46 dB to +23 dB range - MASTER VOLUME - DI - DRIVE - BLEND - OLD SCHOOL - DRIVE SWITCH TYPE-1 / TYPE-2 - 3-WAY SWITCH (FLAT/CUT/FSW) TONE CONTROL: - LOW: Center frequency: 68 Hz; Level: +/-16 dB - MID LOW: Center frequency: 360 Hz, Level: +/-16 dB - MID HIGH: Center frequency: 800 Hz, Level: +/-16 dB - HIGH: Center frequency: 10 kHz, Level: +/-16 dB OUTPUTS: - LINE OUT/DI: XLR balanced – maximum voltage 20 Vpp - EFFECT SEND: unbalanced, max. voltage 20 Vpp (before tone control), (send/return wired in parallel) - SPEAKER OUT: speaker twist socket, 2 jack sockets (6.35 mm) OTHER: - GROUND LIFT (switch on the front panel) - PRE/POST EQ for LINE/DI OUT (switch on the front panel) - FOOTSWITCH (optional): BLEND / CUT EQ preset - POWER SWITCH ON/OFF - BI-BAND LIMITER DIMENSIONS: - Width: 10.87 inch / 27.6 cm - Height: 3.27 inch / 8.3 cm (2 HE) - Depth: 10.08 inch / 25.6 cm - Weight: 4.4 lbs / 2.0 kg - POWER REQUIREMENTS: 100 V; 120 V; 230V; 240 V 50/60 Hz (voltage is factory preset depending on sales region) - ACCESSORIES: Rack brackets or footswitches are not included. - Note: The minimum ohmic load for all Markbass tops is 4 ohms.