ProLogue Four Specifications
| Output Power | 35 watts x 2 |
| Inputs | 1 Pair RCA |
| Outputs | 4 & 8 Ohm speaker taps |
| Freq. Response (+/- .5dB) | 20Hz-85kHz |
| THD | < 1% at full power |
| S/N Ratio | 89 dB |
| Input Sensitivity | 775mV |
| Power Consumption | 210 watts |
| Standard Tube Complement | 2 - 12AX7 2 - 12AU7 4 - EL34 |
| Dimensions (WxHxD) | 11" x 7.5" x 15.5" |
| Weight | 37.5 lbs |