Yamaha AX-550

Data

General

• Manufacturer: Yamaha
• Model: AX-550
• Type: Integrated amplifier
• Years of manufacture: 1991 - 1993
• Made in: Japan
• Color: Black, Titanium
• Remote control: yes
• Power consumption: 230 W max.
• Dimensions: 435 mm x 150 mm x 388.5 mm (WxHxD)
• Weight: 11 kg
• Original price approx.: 800,- DM

Connections

• Number of inputs:
  • Phono MM 2.5 mV / 47 kOhm,
  • MC 160 µV / 220 Ohm
  • Tuner, CD, Aux, 2 × Tape: 150 mV / 47 kOhm
  • Main-In: 1 V / 14 kOhm
• Number of outputs:
  • 2 × Rec-Out 150 mV / 220 Ohm
  • Pre-Out 1 V / 470 Ohm
  • Headphones 0.52 V / 390 Ohm
  • 2 × Loudspeaker

Technical Data

• Continuous power (at distortion factor)
  • 8 ohms: 2 × 85 watts at 0.015
  • 4 Ohm: 2 × 140 Watt according to DIN

2 ohms: 2 × 180 watts according to DIN

• Dynamic power
  • 8 Ohm: 2 × 135 Watt
  • 4 Ohm: 2 × 195 Watt
  • 2 Ohm: 2 × 230 Watt
• Total harmonic distortion: 0,003 %
• Attenuation factor: 250
• Frequency response: 10-50,000 Hz
• Signal-to-noise ratio: 110 dB
• Stereo channel separation: 75 dB
• Tone control:
  • Bass: ±10 dB at 20 Hz

Treble: ±10 dB at 20,000 Hz

• Loudness: adjustable
• High filter: no
• Low filter (subsonic): 15 Hz / 18 dB, switchable
• Mute: no
• Direct/Line-Straight: Pure-Direct

Special Features

• 4 power transistors
• Record-Selector
• Mono/stereo switch
• Separable pre/power amplifier
• Accessory connections

Notes

• Other models in the same series:
• Yamaha AX-350
• Yamaha AX-450
• Yamaha AX-550
• Yamaha AX-750
• Yamaha AX-1050

• [[Previous model:
• Yamaha AX-540

• Successor model:
• Yamaha AX-570

Pictures

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Reports

• Report in "FonoForum" 7 / 1991

• In the mid 90s the Japanese managed to produce a generation of very good amps! The 550 was the beginning and belongs to it. After that pretty much identical in construction.HW