NRPavs   Oldies  but  Goodies  Yamaha  A-420  [3rd unit]  stereo  amplifier  details
Oldies but Goodies product details : 
Yamaha  A-420
stereo  amplifier  - 3rd unit

 
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repair

testing

 
 
Yamaha  A-420  stereo  amplifier  :  top  view,  no remote
Yamaha  A-420  stereo  amplifier  :  right  profile
Yamaha  A-420  stereo  amplifier  :  controls  closeup
Yamaha  A-420  stereo  amplifier  :  back  view
Yamaha  A-420  stereo  amplifier  :  left  profile
Yamaha  A-420  stereo  amplifier  :  size  scale
  Under repair and final testing
S/N: 120657   2nd unit images shown  - new images soon
 
 
        sitemap              Yamaha  A-420 [3rd unit]  stereo  amplifier specifications                         Back to NRPavs Home  
                 Yamaha   A-420  [3rd 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


   Under repair and final testing



Fastway couriers : packing $5,  Rural add $5,
   each extra 5kg :  add $6.00 NI, $11.80 SI

Auckland @ $7.75 $13

North Island @ $12.35 $18

South Island: < 2kg @ $6.95  NA 

South Island: < 10kg @ $21.25 $27

Payment options :

   CASH on delivery by arrangement : Northland, Auckland buyers

   By  bank payment : 12-3061-0161709-00   ASB   name: N R PARKIN

   By credit card :   Use   Pay Now  option on
trademe     or,
                   Use secure     PayPal  payment on our email money request

ParcelPost :   packing $5,  Rural add $5

1 x < 15kg local not Auckland @ $5.50 $11

6kg to Auckland or Nth Island @ $17.00 $22

6kg to South Island @ $26.50 $32


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