| Signal Path | Analog Hardware |
| Dimensions | 38.1 × 18.4 × 27.9 cm (W × H × D) |
| Weight | 39lbs (Shipped) |
| Power | 117VAC, 60Hz 180W 320W (Max) |
| Frequency Response | 20Hz-20kHz ±0.5dB (40W) |
| Output Power ("Hi-Fi") | 40W |
| Output Power (Mono, "Hi-Fi") | 80W |
| IHFM Music Power Output (0.7% THD, 1kHz) | 49W |
| Output Power (Mono, IHFM Music Power) | 98W |
| Impedance Load | 4/8/16/32Ω |
| Input Sensitivity | 0.95V |
| THD (40W, 20Hz-20kHz) | 1.5% |
| IMD (40W, 60Hz:6kHz, 4:1) | 0.5% |
| SNR | 85dB |
| Damping Factor (4/8/16Ω) | 12.5/16/16 |
| Channel Separation (1kHz) | 70dB |
| Output Tube | EL34 |
| Tube Complement | EL34 (x4), 6AN8 (x2) |
| Finish | Black, Bronze and Ivory |
| MSRP (1961) | $79.95 |
| Channels | 2 Channel (May be used as mono amp for double power output) |
| Links | Predecessor: AA-40 |
| Notes | Updated AA-40 |
