| Title | Value |
|---|---|
| Class A power output : | 2x 20W (8 Ohm) |
| Class A/B power output : | 2x 140W (4 Ohm, 20Hz...20Khz) |
| 2x 120W (6 Ohm, 20Hz...20Khz) | |
| 2x 100W (8 Ohm, 20Hz...20Khz) | |
| Dynamic A/B power output : | 2x 340W (2 Ohm) |
| 2x 220W (4 Ohm) | |
| 2x 170W (6 Ohm) | |
| THD : | 0,008% (1Khz, 8 Ohm) |
| Power bandwidth : | 10Hz...50Khz (8 Ohm, 0,003% THD) |
| Frequency response : | 10Hz...100Khz (+0 / -1dB) |
| Damping factor : | 180 (8 Ohm, 20Hz...10Khz) |
| S/N ratio : | 111dB (lines) |
| RIAA accuracy : | ± 0,1dB |
| Inputs : | 250µV / 100 Ohm (MC) |
| 2,5mV / 47kOhm (MM) | |
| 150mV / 33kOhm (lines) | |
| Maximum phono input : | 16mV (MC, 1Khz) |
| 160mV (MM, 1Khz) | |
| Outputs : | 3x tape |
| 1x processor loop | |
| PC : | 220W max. |
| Dimensions : | 45,4 x 16,5 x 38cm |
| Weight : | 17,5kg. |
| List price : | 65,000¥ |
| EU measured specs | EU measured specs |
| MM maximum input : | 22mV at 50Hz |
| 150mV at 1Khz | |
| 1100mV at 15Khz | |
| MM S/N ratio : | 87dB unweighted |
| 91dBA weighted | |
| MM channel balance : | within 0,1dB |
| MC maximum input : | 2,3mV at 50Hz |
| 15mV at 1Khz | |
| 110mV at 15Khz | |
| MC S/N ratio : | 69dB unweighted |
| 73dBA weighted | |
| Class A output : | 2x 25W (8 Ohm, 1Khz, 0,31% THD) |
| Class A THD : | 0,0067% / 0,0065% (10W at 40Hz, L/R) |
| 0,0049% / 0,0042% (10W at 1Khz, L/R) | |
| 0,0094% / 0,0071% (10W at 20Khz, L/R) | |
| 0,0082% / 0,0083% (5W at 40Hz, L/R) | |
| 0,0057% / 0,0058% (5W at 1Khz, L/R) | |
| 0,0071% / 0,0063% (5W at 20Khz, L/R) | |
| 0,016% / 0,016% (1W at 40Hz, L/R) | |
| 0,012% / 0,011% (1W at 1Khz, L/R) | |
| 0,011% / 0,011% (1W at 20Khz, L/R) | |
| Class A/B output : | 2x 108W (8 Ohm, 1Khz) |
| Class A/B THD : | 0,0055% / 0,0057% (40W at 40Hz, L/R) |
| 0,0038% / 0,0041% (40W at 1Khz, L/R) | |
| 0,015% / 0,0061% (40W at 20Khz, L/R) | |
| 0,0058% / 0,0061% (20W at 40Hz, L/R) | |
| 0,0042% / 0,0047% (20W at 1Khz, L/R) | |
| 0,015% / 0,0076% (20W at 20Khz, L/R) | |
| 0,023% / 0,024% (1W at 40Hz, L/R) | |
| 0,012% / 0,016% (1W at 1Khz, L/R) | |
| 0,015% / 0,016% (1W at 20Khz, L/R) | |
| S/N ratio : | 108dB (rated power, unweighted) |
| Rise time : | 2,2µs (10Khz) |
Marantz PM-80
october 1989
1992
First of a long and very successful line of amplifiers which were all higher-end versifications of it.
Powering everybody is a large EI transformer and 2x 18,000µF / 63V ELNA For Audio caps. Regulated feeds separately power the EQ, indication LEDs, voltage amp and output stage. A CCNE noise-killer circuit is inserted in the dedicated output stage power-supply.
The output stage uses Sanken Darlington packs with two pairs of copper-clad p-p of 2SA1265 / 2SC3182 each with a 100W Pc. The Class A mode is switched with an opto-coupler and transistor which rise bias.
The phono stage is a differential FET input with ahigh-quality op'amp for the MC gain ; the same op'amp is used for the tone controls ; relays are used to switch inputs and the AC cord is OFC-wired.
Very low distortion swift rise time, excellent RIAA accuracy but a none-too-flat response in Class A/B which slightly (slighty !) favors the midband.
The later upgraded models (PM-80a first) corrected that and added more bass oomph, better highs and tighter stereo scenery through componentry upgrades and HDAM modules and more attention paid to the volume attenuator.
A real PM-80 here and in black here.
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