| Title | Value |
|---|---|
| MAIN section | MAIN section |
| Musical power : | 2x 42W (8 Ohm, 0,1% THD, one channel only) |
| Nominal power : | 2x 40W (8 Ohm, 0,5% THD) |
| 2x 37W (8 Ohm, 0,1% THD) | |
| THD : | < 0,03% (-3dB down rated power) |
| IMD : | < 0,06% (-3dB down rated power) |
| Power bandwidth : | 5Hz...35Khz (+0 / -1dB, 0,1% THD) |
| 5Hz...75Khz (+0 / -3dB, 0,5% THD) | |
| Frequency response : | 10Hz...10Khz (+0 / -1dB, 0,1% THD, 10W output) |
| Input : | 1V / 100kOhm (80kOhm for 5Hz...20Khz) |
| Residual noise : | < 0,01µW (input shorted) |
| S/N ratio : | > 95dB |
| Damping factor : | > 50 (5Hz...10Khz) |
| Output impedance : | < 0,16 Ohm (pure load, 1Khz) |
| PRE section | PRE section |
| Nominal output : | 1V |
| Maximum output : | 5V |
| THD : | < 0,1% (100Hz...10Khz) |
| < 0,05% (100Hz...10Khz) | |
| IMD : | < 0,1% (rated power) |
| Frequency response : | 10Hz...40Khz (+0 / -1dB, tone controls OFF) |
| Inputs : | 2mV / 60kOhm (±20%, phono 1 & 2) |
| 1mV / 100kOhm (±20%, MIC 1 & 2) | |
| 100mV / 60kOhm (±20%, tuner & aux) | |
| 500mV / 60kOhm (±20%, tape play) | |
| Outputs : | 100mV / <1kOhm (±20%, tape RCA) |
| 40mV / 80kOhm (±20%, tape DIN) | |
| Maximum input level : | 200mV (phono 1 & 2, 1Khz, 0,1% THD) |
| 80mV (MIC, 0,1% THD) | |
| RIAA curve : | ± 0,5dB (30Hz...15Khz) |
| S/N ratio : | > 65dB (phono 1 & 2) |
| > 55dB (MIC 1 & 2) | |
| > 75dB (lines) | |
| Muting switch : | 0 / -10dB / -20dB |
| Bass control : | ±10dB at 80Hz (-10,5dB) |
| Treble control : | ±10dB at 12Khz (-9dB) |
| Low filter : | 12dB/octave below 40Hz |
| High filter : | 12dB/octave above 9Khz |
| General | General |
| Semiconductors : | 39x transistors |
| 2x FETs | |
| 10x diodes | |
| 2x varistors | |
| PC : | 56W (multivoltage for EU & JP models) |
| Dimensions : | 43 x 14 x 35cm |
| Weight : | 12,5kg. |
| List price : | 75,000¥ (1972) |
Denon PMA-500
october 1972
1975
Upper-mid integrated amp with one feature that set it apart in 1973 :
a phono MC stage... which however works with dedicated back transformer terminal (à la Luxman AD8000) so there is no MC stage inside per se but it's written on the faceplate :)
Said transformer was named DL-103T (for the DL-103 - no wonder) and cost very little (3400¥ in 1970) so it was probably made for earlier amps.
The rest is a slightly slimmed-down PMA-700 / PMA-700Z : one fairly big trafo, Motorola output transistors, DC output stage, two heatsinks/Darlington packs, two back MIC input pots with front mic mixing knob, null balance switch and a pre/main loop.
Updated as PMA-500Z in 1975 mainly without the MIC functions - but a sizeable price increase.
Then as PMA-500V in 1985 - but that's a really different item.
A real PMA-500 here and the updated version here.
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