| Form Factor | 19" Rackmount |
| Signal Path | Analog Hardware |
| Dimensions | 48.3 × 48.9 × 31.8 cm (W × H × D) |
| Weight | 141lbs |
| Power | 105/117/130VAC, 50/60Hz 400W |
| Frequency Response | 20Hz-20kHz ±1dB |
| Power Output | 75W (Requires 5W input from Altec A-126 or A-127 series amplifiers) |
| Power Output (Reduced Plate Voltage) | 50W (Extends tube life) |
| Gain | 15dB |
| Topology | Class A |
| THD (75W) | 2% |
| IMD (75W) | 8% |
| SNR | 68dB |
| Noise Level (0.001W) | -20dB |
| Input Impedance | 14/56/125/220/500Ω |
| Output Impedance | 2.25Ω, 4.5Ω, 9Ω, 18Ω |
| Load Impedance | 3/6Ω, 6/12Ω, 12/24Ω, 24/48Ω |
| Load Impedance (Maximum Output) | 4.5Ω, 9Ω, 18Ω, 36Ω |
| Output Tube | 845 or 284 |
| Tube Complement | 845 (or 284) (x2), 866A (x2) |
| Finish | Blue Gray |
| Channels | 1 Channel |
| Notes | Wall mountable version of Altec A-287F |
