Yamaha A-720 specifications

Category : Integrated amplifier

Brand : Yamaha

General

connectors

Technical data

special features

• manufacturer: Yamaha
• model: A-720
• type: amplifier
• year of construction: 1985 - 1986
• remote control: no
• power consumption: 470 W (EU)
• dimensions: 435 x 147 x 399 mm (WxHxD)
• weight: 10.2 kg
• color: silver and black
• factory price approx.: 1.000,- DM

• number of inputs:
  • Phono MM/MC, Tuner, 2x Tape, Aux, CD
• number of outputs:
  • 3x speaker, 2x Rec-Out, Headphones

• Phono MM/MC, Tuner, 2x Tape, Aux, CD

• 3x speaker, 2x Rec-Out, headphone

• the duration of the performance (total harmonic distortion)
  • 8 643961b8da111c0a15d770a1109a86d4: 2x 105 Watt (0,005%)
  • 4 643961b8da111c0a15d770a1109a86d4: 2x 150 Watt (1%)

• 8 643961b8da111c0a15d770a1109a86d4: 2x 105 Watt (0,005%)
• 4 643961b8da111c0a15d770a1109a86d4: 2x 150 Watt (1%)

• dynamic performance
  • 8 643961b8da111c0a15d770a1109a86d4: 2x 145 watts
  • 6 643961b8da111c0a15d770a1109a86d4: 2x 180 Watt
  • 4 643961b8da111c0a15d770a1109a86d4: 2x 240 watts

• 8 643961b8da111c0a15d770a1109a86d4: 2x 145 watts
• 6 643961b8da111c0a15d770a1109a86d4: 2x 180 Watt
• 4 643961b8da111c0a15d770a1109a86d4: 2x 240 watts

• total harmonic distortion: 0,005%
• damping factor: 45
• input (sensitivity/impedance)
  • Phono MM 2.5 mV /47 K-ohms
  • Phono MC 160 µV /220 643961b8da111c0a15d770a1109a86d4s
  • CD, Aux, Tape, Tuner, 150 mV /47 K-ohms
• output (level/impedance)
  • the Rec Out 150 mV /470 643961b8da111c0a15d770a1109a86d4s
• sound-control:
  • Bass: +/- 10dB (20Hz), peak frequency 350 Hz
  • height: +/- 10 dB (20Hz), peak frequency of 3,500 Hz
• Loudness: adjustable, -40 dB
• Subsonic: switchable, -12dB sound below 15Hz
• Mute: Yes, -20 dB
• Direct/Line-Straight: the controller can be switched off
• ripple voltage distance (short-circuited):
• stereo channel separation: 65 dB
• signal-to-noise ratio: AUX/Tape/Tuner: 106 dB, Phono MM, 92 dB, Phone MC 76dB

• Phono MM 2.5 mV /47 K-ohms
• Phono MC 160 µV /220 643961b8da111c0a15d770a1109a86d4s
• CD, Aux, Tape, Tuner, 150 mV /47 K-ohms

• the Rec Out 150 mV /470 643961b8da111c0a15d770a1109a86d4s

• Bass: +/- 10dB (20Hz), peak frequency 350 Hz
• height: +/- 10 dB (20Hz), Center frequency of 3,500 Hz

• Record-Selector
• Mono/Stereo switchable
• car-Class A/AB switchable
• pairs of Speakers can be controlled individually

• Other models from the same series:
• Yamaha A-3 20
• Yamaha A-420
• Yamaha A-5 20
• Yamaha A-7 20
• Yamaha A-1 020

• previous model:
• Yamaha A-7 00

• successor model:
• Yamaha AX-700

• report in "FonoForum" 3 / 1986

• Very powerful amplifier with a beautiful look. Even after more than 20 years, he is still a real powerhouse, but of course, like most old amplifiers, he has problems with the potentiometers. It should also be said that all controllers are made of aluminum.

Comment:

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