Condition: 8.5/10. Item is in excellent condition. Comes with original boxes.
Solid-state, monoblock power amplifier with balanced and unbalanced line-level inputs and 1 pair speaker-level inputs.
Maximum power output: 750W into 8 ohms (28.75dBW), 1150W into 4 ohms (24.7dBW).
Maximum output voltage: 78V RMS, 20Hz–20kHz; 222V peak–peak.
Maximum current: 250 amps peak–peak.
Frequency response: 20Hz–30kHz, +0/–0.2dB.
THD+noise: <0.01%, 20Hz–20kHz.
Damping factor: 220.
Input impedance: 50k ohms (line), 50 ohms (speaker).
Input sensitivity for full power out into 8 ohms: 2.5V (line), 35V (speaker).
Signal/noise (no reference level quoted): >120dB (line), >115dB (speaker), both figures A-weighted.
The original 550K Power Amplifier created a huge stir and got great reviews. Little wonder since the improvement it made to general sound quality and dynamic range was outstanding.
The 750K Power Amplifier is an even bigger version using exactly the same circuitry as our kW750. And it measures almost identically as well.
The 750K has an extraordinary sound. It is sweet and light with very extended and tight bass. The soundstage is deep and wide. The dynamics are awe inspiring. Because the 750K has such a sweet and almost unassuming, sound it’s all too easy to forget the impact that over 1kW of dynamic power can have. We think the 750K has it all; neutral sweet uncoloured sound with massive headroom.
|Power||750 Watts into 8 Ohms (29 dBW)|
1150 Watts into 4 Ohms
|Voltage, RMS||78 Volts 20 Hz to 20 kHz|
|Voltage, Peak-to-peak||222 Volts|
|Current peak-to-peak||260 amps|
|Thermal cut out (internal temp)||70°C|
|Line input [ Balanced and RCA ]:|
|THD + noise, 20 Hz to 20 kHz||<0.010%|
|Signal / noise ratio||> 120 dB 'A'-weighted|
|Input sensitivity for 750 watts||2.5V|
|Input impedance||50k Ohms|
|Frequency response||20 Hz to 30 kHz, +0, -0.2 dB|
|Signal / noise ratio||> 115 dB 'A'-weighted|
|Input sensitivity for 550 Watts||35V|
|Input impedance||50 Ohms|
|Line level inputs||1line level RCA connector|
|Balanced inputs||1 line level XLR DIN socket|
|Speaker inputs||1 pair 4 mm banana plug/binding posts|
|Speaker outputs||2 pair 4 mm banana plug/binding posts|
|Power requirement||100 / 115 / 230Volts AC 50 / 60 Hz (factory pre-set),|
1000 Watts maximum into 8 Ohms, 53 watts idle
|17.2 kg, 37 3/4 lbs||unit only, unboxed|
|19.5 kg, 43 lbs||in shipping carton|
|215 mm, 8 1/2 inches diameter|
|560 mm, 22inches high including feet|
|220 mm, 8 3/4 inches deep (front to back) including terminals|