M-60 Mark II
| Brand | Atma-Sphere |
| Manufacturer | Atma-Sphere Music Systems, Inc. |
| Function | Amplifier, Power |
| Produced | 199?-2000 |
| Country | United States |
| Form Factor | Standard Width |
| Signal Path | Analog Hardware |
| Weight | 30lbs |
| Power | 300W |
| Frequency Response | 2Hz-75kHz ±0.5dB |
| Output Power (8/4Ω) | 60W/45W |
| Amplifier Topology | Class A |
| Amplifier Type | Output Transformerless (OTL) |
| Frequency Response (1W) | 1Hz-200kHz ±0.5dB (1Hz-1.5MHz ±3dB) |
| Output Section Risetime | 600V/µs |
| Phase Shift (20kHz) | <1° |
| Feedback | 2dB |
| Output Tube | 6AS7G |
| Power Supply Storage | 140Joules |
| Tube Complement | 6AS7G (x8), 6SN7 (x4) |
| MSRP (2000) | $4650 |
| Channels | 1 Channel |
| Connections |
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