Up for sale is a Audio Research M300 MKII Monoblock Class A Tube High Definition Power Amplifier! This is a very rare, very nice high quality unit and it is fully functional and working. It has minimal cosmetic wear with no damage and has had new tubes installed. These typically come in pairs, I just have the one. These are very rare and sought after.
SPECIFICATIONS
Power Output - 300 Watts minimum continuous at 8 Ohms from 16Hz to 20kHz with less than 0.8% total harmonic distortion (typically below 0.005%at 1 Watt)
Approximate Actual Power Available at "Clipping" - 330 Watts (1kHz)
Power Bandwidth - (-3dB Points) 10Hz to 60kHz
Input Sensitivity - 0.9V RMS for rated output
Input Impedance - 60K Ohms, nominal
Output Regulations - Approximately 0.3dB. 8 Ohm load to open circuit (damping factor approximately 30)
Negative Feedback - 20dB
Slew Rate - 25 volts/microsecond
Rise Time - 3 microseconds
Hum & Noise - Less than 2mV RMS 90dB below rated output (broad-bandwidth unweighted, inputs shorted)
Power Supply Energy Storage - Approximately 350 Joules
Power Requirements - 105-125VAC 60Hz (210-250VAC 50Hz), 900 Watts at rated output, 450 Watts at "idle" - 130 Watts at "standby"
Dimensions - 19" (48 cm) Wide (standard rack panel) x 10.5" (27 cm) High x 16" (41 cm) Deep (front panel back). Handles extend 1 5/8" (4.1 cm) forward of the front panel. Output connectors extend 1" behind rear panel.
Weight - 110 lbs, Net 116 lbs shipping
Tubes Required - 4 - Matched pair 6550 (low gas) Power Output
Comes with the ORIGINAL BOX. I don't have the manual, but it can be easily obtained online for free.
This is a very large, VERY HEAVY piece of equipment. I will ship via UPS only as they'll have the best prices and are best equipped to handle something like this. Yes, I know that shipping is expensive. I will cover additional insurance and signature confirmation. Local pickup is acceptable and super cool!
Any questions just ask, thanks for looking!