Warwick BJF-S66 User Manual page 4

Specs:
Input impedance: 1 MΩ
Output: 30W / 16Ω | 66W / 8Ω | 100W / 4Ω
Size: 26.5 (W) × 9.5 (D) × 10.3 (H) cm (not including knobs)
Weight: 1.62 kg
AC Adapter (included): 65W, 100~240V AC input, DC24V output, 5.5x2.5mm positive center.