| SOLD items 2014 archive 1 product details : Proton 520 stereo amplifier
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Proton 520 stereo amplifier | Proton 520 stereo amplifier : right profile |
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Proton 520 stereo amplifier : left profile | Proton 520 stereo amplifier : back view |
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Proton 520 stereo amplifier : top view | Proton 520 stereo amplifier : size scale |
SOLD April 2014, from Oldies but Goodies and recommendation, to Whangarei | S/N: P52015520 |
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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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