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Item Condition: Int: Excellent Ext: fair/average
Shipping Options: Pickup available and you can audition.
Suburb or Town: Lindfield
State: NSW
Payment Method: EFT or Cash on Pickup
Reason for selling: NLR

Further information:

 

Single (One/1) Musical Fidelity 550K Supercharger for sale. This amp was given to me approx six months ago to repay a debt. It had been sitting in a dark corner of a storage container for some years. When it was given to me both speaker connections were broken off and the base plate was showing signs of surface rust. I took about restoring the amplifier with the idea of using it with a passive subwoofer or to run a centre speaker (total overkill but think of the headroom..).

The internals are in pristine condition. The external case of the amp is in fair/average condition. Both speaker connection have been replaced and the base plate has had all rust removed and given a fresh coat of automotive paint. I have tested the amplifier and it sounds better than I have the ability to describe (numerous reviews online and GIYF).

 

 

Amplifier specification:

Output: Power 550 Watts per channel into 8 Ohms (27dBW), 
 750 Watts per channel into 4 Ohms 
Voltage, RMS 66 Volts 20Hz to 20 kHz 
 Voltage, Peak-to-peak 186 Volts 
 Current peak-to-peak 250 Amps 
 Damping factor 220 
 Output devices 12 
Thermal cut out (internal temp) 70ºC 
 
Line input: 
THD + noise, 20Hz to 20 kHz < 0.016% 
Signal / noise ratio > 120dB ‘A’-weighted 
Input sensitivity for 550 Watts 2.23V 
 Input impedance 50k Ohms 
Frequency response 20Hz to 30 kHz, +0, -0.2dB 
Speaker input: 
Signal / noise ratio > 115dB ‘A’-weighted 
Input sensitivity for 550 Watts 33V 
 Input impedance 50 Ohms 
 
Connections: 
 
Line level inputs: 1 line level RCA connector 
 Speaker inputs: 1 pair 4mm banana plug/binding posts 
Speaker outputs: 1 pair 4mm banana plug/binding posts 
Power requirement: 100 / 115 / 230Volts AC 50 / 60Hz (factory pre-set), 
1000 Watts maximum into 8 Ohms, 53 Watts idle 
Weight: 12.1 kg, 26¾ lbs unit only, unboxed 
 15 kg, 33lbs in shipping carton
Dimensions: 215 mm, 8½ inches diameter 
404mm, 16 inches high including feet 
220mm, 8¾ inches deep (front to back) including terminals

 
Photos:

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