Yamaha A-420 specifications

Category : Integrated amplifier

Brand : Yamaha

General

connectors

Technical data

special features

Other models from the same series:

the previous model:

successor model:

• manufacturer: Yamaha
• model: A-420
• year of construction: 1985 - 1986
• Made in Japan
• type: amplifier
• remote control: no
• power consumption: 290 W
• dimensions: 435 x 112 x 327 mm (B x H x T)
• weight: 6.2 kg
• color: silver or black
• new price: approx. 500,- DM

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

• Phono MM/MC, Tuner, Tape, Aux, CD

• 2x speakers, Rec-Out, Headphones

• the duration of the performance (total harmonic distortion)
  • 8 643961b8da111c0a15d770a1109a86d4: 2x 50 Watt (0,015 %)
  • 4 643961b8da111c0a15d770a1109a86d4: 2x 70 Watt (1 %)
• dynamic performance
  • 8 643961b8da111c0a15d770a1109a86d4s: 85 W
  • 4 643961b8da111c0a15d770a1109a86d4: 115 W
• total harmonic distortion: 0.007 in %
• damping factor: 50 (1 kHz, 8 643961b8da111c0a15d770a1109a86d4)
• input (sensitivity/impedance)
  • Phono MC: 160 µV/100 643961b8da111c0a15d770a1109a86d4
  • Phono MM: 2.5 mV/47 K-ohms
  • Aux/Tape/Tuner: 21 mV
• output (level/impedance)
  • Rec Out (tape recording): 150 mV/600 643961b8da111c0a15d770a1109a86d4s
  • headphone: 0.7 V/8 643961b8da111c0a15d770a1109a86d4 (output impedance: 220 643961b8da111c0a15d770a1109a86d4)
• frequency response:
  • Aux/Tape/Tuner: 20 - 20,000 Hz, +0/-0.5 dB
  • Main: 20 - 20,000 Hz, +0/-0.5 dB
• control:
  • Bass: Yes, ± 10 dB (20 Hz)
  • height: Yes, ± 10 dB (20 kHz)
• Loudness: sound adjustable
• Subsonic: no
• Mute: no
• Direct/Line-Straight: no
• ripple voltage distance (short-circuited):
• stereo channel separation:
  • Phono MM/Aux/Tape (crosstalk attenuation): 80 dB (40 Hz); 60 dB (1 kHz); 40 dB (10 kHz)
• signal-to-noise ratio:

• 8 643961b8da111c0a15d770a1109a86d4: 2x 50 Watt (0,015 %)
• 4 643961b8da111c0a15d770a1109a86d4: 2x 70 Watt (1 %)

• 8 643961b8da111c0a15d770a1109a86d4s: 85 W
• 4 643961b8da111c0a15d770a1109a86d4: 115 W

• Phono MC: 160 µV/100 643961b8da111c0a15d770a1109a86d4
• Phono MM: 2.5 mV/47 K-ohms
• Aux/Tape/Tuner: 21 mV

• Rec Out (tape recording): 150 mV/600 643961b8da111c0a15d770a1109a86d4s
• headphone: 0.7 V/8 643961b8da111c0a15d770a1109a86d4 (output impedance: 220 643961b8da111c0a15d770a1109a86d4)

• Aux/Tape/Tuner: 20 - 20,000 Hz, +0/-0.5 dB
• Main: 20 - 20,000 Hz, +0/-0.5 dB

• Bass: Yes, ± 10 dB (20 Hz)
• height: Yes, ± 10 dB (20 kHz)

• Phono MM/Aux/Tape (crosstalk attenuation): 80 dB (40 Hz); 60 dB (1 kHz); 40 dB (10 kHz)

• A-320
• A-420
• A-520
• A-720
• A-1020

• A-400

• AX-400

• stereo play 6/1986, p. 33
• Stiftung Warentest (for hi-Fi circles, perhaps, a little strange) time: quality rating of "good".

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