NRPavs   SOLD items 2014 archive 1  Proton  520  stereo  amplifier  details
SOLD items 2014 archive 1 product details : 
Proton  520
stereo  amplifier

SOLD
 
 
Proton  520   stereo  amplifier
Proton  520   stereo  amplifier  :  right  profile
 
 
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Proton  520   stereo  amplifier  :  size  scale
   SOLD April 2014, from Oldies but Goodies and recommendation, to Whangarei
S/N: P52015520
 
 
  Proton  520 stereo  amplifier specifications                         Back to NRPavs Home  
                 Proton  520 stereo amplifier - dark  grey :

Features :
   1984 vintage 20W amplifier
   No remote control


   Low profile stereo amplifier with similar appearance to NAD equipment
   Proton are a 50 year old Taiwanese worldwide OEM electronics producer who also manufactured NAD equipment,
   Proton components in general, use superior quality components


Specifications :
  -:®:-    1984 vintage
  -:®:-    Power : 20W RMS at 8 ohms with THD distortion 0.015%
  -:®:-    Clipping power : at 8/4/2ohms : 27W / 36W / 40W
  -:®:-    Dynamic headroom : at 8ohms/4ohms/2ohms : 52W / 80W / 100W
  -:®:-    Damping factor : 90
  -:®:-    Preamp in / outs   can be used a separate preamp or as a power amplifier
  -:®:-    Phono : MM / MC  moving magnet and moving coil - rear switched
  -:®:-    Frequency response : 20 to 20kHz +/- 0.2dB
  -:®:-    Power bandwidth at THD 1% : 10Hz to 60kHz
  -:®:-    High level input resistance / capacitance : 40kohm / 220pF
  -:®:-    Line input sensitivity : VIDEO / tape play: 100mV,  phono MM: 2.5mV,  MC [high/low]: 0.2mV / 0.1mV
  -:®:-    Residual noise : 0.4mV
  -:®:-    Channel crosstalk [1kHz] : 90dB / function crosstalk: 80dB
  -:®:-    Signal to noise [unweighted] : Tape / DAD: 90dB,  Phono MM: 80dB,  MC: 68dB
  -:®:-    Bass / Treble : +/- 9dB at 100Hz / 10kHz
  -:®:-    Loudness at -30dB : +6dB at 100Hz,  +3dB at 10kHz
  -:®:-    Phono input resistance [MM/MC] : 47kohm / 100ohm
  -:®:-    Phono input capacitance [selectable] : 100pF / 200pF / 320pF
  -:®:-    Phono overload [MM] at 20Hz / 1kHz / 20kHz : 28mV / 280mV / 2.8V
  -:®:-    Phono THD at 4.5V output [MM/MC] : 0.01% / 0.03%
  -:®:-    RIAA response accuracy [MM/MC] : +/- 0.2dB / +/- 0.5dB
  -:®:-    Speaker outputs : A,  B,  A + B
  -:®:-    Tone controls : Bass,   Bass EQ  Treble  Loudness
  -:®:-    Dimensions [ W x H x D ]: 420 x 85 x 210mm
  -:®:-    Weight : 5.2kg  - packed weight ~ 7kg


   SOLD April 2014, from Oldies but Goodies and recommendation, to Whangarei












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