Yamaha A-420 [5th unit] stereo amplifier - black :
Features :
Mid 1980s low profile stereo amplifier, no remote control
MM, MC phono preamps
Specifications :
-:®:- 1985 vintage
-:®:- Power : 75W RMS at 8 ohms with THD distortion 0.01%
-:®:- Power bandwidth : 10Hz to 50kHz [THD 0.03%, 37.5W, at 8ohms]
-:®:- Dynamic power : [DIN, 1kHz, 1% THD, 4ohms]: 112W, dynamic headroom at 8ohms: 1.12dB, [IHF at 8ohms / 6ohms]: 97W / 120W
-:®:- Input sensitivity / impedance : [Aux / tape / tuner / cd]: 150mV / 47kohms, Phono MM: 2.5mV / 47kohms, MC: 160μV / 220ohms
-:®:- Output level / impedance [rec out] : 150mV / 470ohms
-:®:- Headphones output : 0.7V / 270ohms [0.01% THD, 8ohms]
-:®:- Frequency response : [Tape / tuner / Aux /cd] : 20Hz to 20kHz +0dB / -0.5dB
-:®:- Damping factor : 50 [1kHz, 8ohms]
-:®:- Phono RIAA equalization : MM: ±0.2dB, MC: ±0.3dB
-:®:- Total Harmonic distortion [20Hz to 20kHz] : [Aux / tape / tuner / cd to speaker out, 1W, 8ohms]: 0.005%, MM: to rec out, 3V : 0.003%, MC: to rec out 3V : 0.007%
-:®:- Signal to noise ratio : [Aux / tape / tuner / cd]: 100dB, MM: 92dB [5mV, input shorted], MC: 75dB [500μV, input shorted]
-:®:- Speaker outputs : A, B front switched
-:®:- Tone controls : Bass: ±10dB at 20Hz, [turnover frequency: 350Hz] Treble: ±10dB at 20kHz [turnover frequency: 3.5kHz]
-:®:- Low filter : 15Hz, -12dB / octave
-:®:- Loudness control : continuous level retaed equalization : 40dB at 1kHz
-:®:- Dimensions [W x H x D]: 435 x 136 x 339mm
-:®:- Weight : 7.5kg - packed weight ~ 9kg
SOLD May 2018 on trademe to Hastings
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