7B³ mono amplifiers are truly special. Though they don’t look much different, they’re a big step up from the venerable 4B³. The power supply for this amplifier is built around a specially wound transformer that is substantially more efficient than normal. With twice the power available, they can drive all but the most brutal loads to lifelike levels.
| SPECIFICATIONS | |
|---|---|
| Dimensions | Inches: 17 or 19 W x 5.8 H x 15.5 or 17.8 (with front handles) D |
| Weight | 53 lbs | 24 kg |
| Frequency Response | <1Hz – 100kHz: -3dB |
| THD+N (20Hz-20kHz @ 600W, 8Ω) | <0.005% |
| Power Output | 600W @ 8Ω | 900W @ 4Ω |
| Noise | RCA: -117dB |
| XLR: -119dB | |
| Input Impedance | Unbalanced 7.5kΩ |
| Balanced 5kΩ / leg | |
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