| Signal Path | Analog Hardware |
| Dimensions | 25.4 × 12.1 × 16.5 cm (W × H × D) |
| Weight | 13lbs (Shipped) |
| Power | 117VAC, 50/60Hz 75W |
| Frequency Response | 20Hz-20kHz ±1dB |
| Output Power | 12W |
| Impedance Load | 4/8/16Ω |
| THD (12W) | 2% |
| SNR (1W) | 63dB |
| SNR (12W) | 73dB |
| Damping Ratio | 1-15.66 (User Selectable) |
| Output Tube | EL84 (6BQ5) |
| Tube Complement | EL84 (6BQ5) (x2), 6AN8, EZ81 (6CA4) |
| MSRP (1958) | $21.95 |
| Connections | - Input · RCA (Phono, Cinch) · Mono, Socket (Female), Unbalanced
- Output · Terminal Block · Mono
|
| Controls | - Input Level · Rotary Pot
- Power · Slide Switch · On/Off
- Damping Factor · Slide Switch · Unity/15.66
|
| Links | Successor: UA-2 |
