| Signal Path | Analog Hardware |
| Weight | 28lbs (Shipped) |
| Power | 117VAC, 50/60Hz 115W |
| Frequency Response | 30Hz-15kHz ±1dB (20W) |
| Output Power ("Hi-Fi") | 20W |
| IHFM Music Power Output (0.7% THD, 1kHz) | 20W |
| Impedance Load | 4/8/16Ω |
| Input Sensitivity | 2V |
| THD (20W, 30Hz-15kHz) | 2% |
| IMD (20W, 60Hz:6kHz, 4:1) | 2% |
| SNR (20W) | 95.2dB |
| Damping Factor | 28.5 |
| Output Transformer | Chicago Standard Transformer |
| Output Tube | 5881 |
| Tube Complement | 5881 (x2), 6SN7 (x2), 5V4 |
| Finish | Satin Gold |
| MSRP (1960) | $39.75 |
| Channels | 1 Channel |
| Links | Predecessor: W-4AM · Successor: AA-71 |
| Notes | Addition of filament balance resistors and remote turn on removing need for connection to WA-P1 or WA-P2 preamplifier for operation. |
