Description
Tube mono power amplifier. Remake of Dynaco Mark III reusing only the transformers. Generally marked 'Electronic
Industries'.
The M-60A and M-60B were offered at the same time, where the M-60A was the same as M-60B except with additional provision for regulated 75 Volt 20 ma. supply for FET preamplifier or other application.
Introduced
1968
Discontinued
?
Revisions
M-60A/M-60B
M-60C
M-60D - ARC and Fulton musical industries (FMI) had an agreement that FMI could
modify the M-60 and sell it with the FMI logo as the M-60D amplifier.
Options
3/16" gray anodized aluminum rack panel (19" W x 10 1/2" H) with cutouts for Rotron fans, together with 1/8" anodized
aluminum mounting frame kit for mounting 1 or 2 M-60A or M-60B ($100)
MSRP (US new retail)
$219.50 (M-60A)
$199.50 (M-60B)
Specifications
M-60A/M-60B:
| Power output | 50 Watts RMS 20Hz/20kHz |
|---|---|
| Power bandwidth | |
| Frequency response | ± 1 dB 20Hz/20kHz |
| Input sensitivity | 1.15V RMS for 50 W RMS output |
| Input impedance | 500K ohms |
| Output taps | 4-8-16 ohms |
| Output regulation | |
| Overall negative feedback | |
| Damping factor | |
| Distortion | Less than 1% 30Hz/20kHz @ 50 Watts |
| Slew rate | |
| Rise time | Approximately 20 µs. |
| Hum & noise | 90dB below rated output |
| Power supply energy storage | |
| Power requirements | 117V 50/60 Hz, approx. 150 Watts at idle, approx. 200 Watts at rated power |
| Tube complement | (1) 12AX7, (2) 6FQ7, (2) 0A2, (2) 6550, (1) 5AR4 |
| Other | Load regulation: Approximately 1-172 dB/1kHz |
| Dimensions | 9" W x 10" D x 7" H |
| Weight | 21.5 lbs. Net; 26 lbs. Shipping |
Reviews
Pictures
 |
 |
M-60A/M-60B:
 |
 |
M-60C:
 |
 |
 |
 |
M-60D:
 |