M F kW550 Integrated Amplifier

PRICE: £5000

The kW series of products was launched to showcase Musical Fidelity's technology and challenge brands costing several times their price.

The kW550 Intergrated is the entry level amplifier to the kW series, based on the highly successful kW500. The kW 550 is a 2 box intergrated amplifier. The smaller of the two units houses the isolated power supplies for the dual mono power amplifiers and the stereo preamplifier that make up the larger of the two boxes.

Separate integrated PSU. No transformer generated magnetic interference with signal path.
Completely separate tube preamp and two monobloc power amps in one package. Super quality components importantly sharing one close coupled common ground system.

Very high power and current delivery. Effortless clean sound. Full range dynamics with no clipping. Brings your loudspeakers to life.
High quality 6SL7 tube preamp. Exquisite delicate beautiful sound.
Very high input overload margin (12 volts). Full unlimited dynamic range.
High quality MM/MC phono stage. Great sounds from your treasured vinyl collection.

Specification

• Output:
  Voltage, RMS 70 Volts 20Hz to 20kHz
  Voltage, Peak-to-peak 201 Volts
  Power 630 Watts per channel into 8 Ohms (28dBW),
  910 Watts per channel into 4 Ohms
  Current, peak-to-peak 200 Amps
  Damping factor 200
  Output devices per channel 12
  Pre-out impedance

  
  50 Ohms
  Line inputs:
  Harmonic distortion at 1kHz 0.005%
  THD + noise, 20Hz to 20 kHz < 0.01% typical
  Signal/noise ratio >99dB 'A' -weighted
  Input sensitivity for 630 watts 450mV
  Input impedance 220k Ohms
  Overload margin
  37dB
  Channel separation >75dB typical
  Frequency response 20Hz to 20 kHz, +0, -0.2dB
  20Hz to 60 kHz, +0, -1.4dB

  
  
  Phono input:
  RIAA/IEC combined response See chart below
  Signal / noise ratio > 96dB 'A'-weighted
  Input sensitivity 3.0mV (MM)
  0.4mV (MC)
  
  Input Impedance 47k Ohms (MM and MC)
  Overload margin 24dB (MM and MC)

  
  
  Connections:
  Line level inputs 5 pairs line level RCA connectors,
  1 front panel 3.5mm jack socket (sharing AUX 1 input)
  1 pair phono (MM/MC) RCA connectors,

  
  Line level outputs 1 pair RCA [preamp] controlled by the volume
  1 pair RCA [tape record] fixed line level output
  Speaker outputs 2 pairs 4mm banana plug/binding posts per channel
  Power requirements 100 / 115 / 230Volts AC50 / 60Hz (factory pre-set),
  1950 Watts maximum into 8 Ohms, 120 Watts idle
  
  Dimensions:
  Main Unit 485mm, 19.1 inches wide
  170mm, 6.7 inches high inc. feet
  470mm, 18.5 inches deep inc. terminals
  Power supply 365mm, 14.4 inches wide
  170mm, 6.7 inches inc. feet
  440mm, 18.5 inches inc. terminals

  
  
  Weight:
  Main Unit 23kg, 51lbs unboxed
  28kg, 62lbs in shipping carton
  Power supply 32kg, 70lbs unboxed
  35kg, 77lbs in shipping carton

  
  
  Standard accessories:
  IEC mains lead - (16-Amp type)
  Power supply lead, main (two) 0.7M long + (two) 1.2M long
  Power supply lead, for pre-amplifier (one) 0.7M long + (one) 1.2M long
  Remote control (KW, universal type)
  2 batteries size LR03 or AAA, manganese alkaline type