Description
Hybrid tube/FET mono power amplifier.
Introduced
1987
Discontinued
1989
Revisions
M300 MKII (1988)
Options
A triode version producing 140 watts per channel was available for M300 MKII at an additional $2000.
MSRP (US new retail)
$9,800/pair
$11,995/pair (M300 MKII)
Specifications
| Power output | 300 watts continous at 8 ohms, from 16Hz to 25kHz with less than .5% total harmonic distortion (typically below .005% at one watt). Clipping: 330W at 1kHz, nominal. |
|---|---|
| Power bandwidth | 10Hz-60kHz |
| Frequency response | |
| Input sensitivity | 0.9V in for 300W out |
| Input impedance | 60k ohms. |
| Output taps | 1,2,4,8 ohms |
| Output regulation | |
| Overall negative feedback | 20 dB |
| Damping factor | 30 |
| Distortion | THD: 0.05% at 1W output |
| Slew rate | 25V/µs |
| Rise time | 3µs |
| Hum & noise | Less than 2mV RMS; 90dB below full output |
| Power supply energy storage | 350 joules |
| Power requirements | 130W on standby, 450W quiescent (no signal), 900W at rated output power |
| Tube complement | (4 matched pairs) 6550 |
| Other | |
| Dimensions | 19" W x 10.5" H x 16" D |
| Weight | 110 lbs. Net, 126 lbs. Shipping. |
Reviews
Issue 48 (M300: Special Report), Issue 50 (M300: Capsule),
Issue 51 (M300 MKII: Special Report), Issue 55 (M300: Full Review)
Vol. 10
No. 9 (M300), Vol.
11 No. 1Pictures
M300:
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M300 MKII:
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