Preamps
Technical parameters:
Speaker output power: 25W+25W ( triode mode)
45W+45W ( ultra-linear mode)
Headphone output power: 300o is 900mW, use 270 as the basic division to calculate the output power, for example, 300o headphones 270 / 300o = 0.9w, 32o headphones 270 / 32o = 8.5w
Input impedance: 100K
Output Impedance: 4 - 8(6)
Signal-to-noise ratio: 92dB
Input sensitivity: 280mV; 520mV (pre-input)
Harmonic distortion: 1% (1kHz) Power frequency machine: 15Hz~30kHz (-1.5dB)
Anode voltage: about 420v
Net weight: 22.5kg
Packing weight: 25kg
Power consumption: 260W
Special customization of vacuum tubes:
Preamplifier: 12AX7×1 (equivalent to ECC83, CV4004 ECC803, 5751)
Preamplifier tube: 12AU7×2 (equivalent to ECC82, 5814, 6189CV4003)
Power tube: KT88×4 (equivalent to 6550)
Rectifier: 5AR4×1 (equivalent to GZ34)
Dimensions: (width × depth × height): 410mm × 335mm × 198mm
Power supply voltage: ~110-120V and 220-240V±5% (50/60Hz)
Working conditions: Temperature: 0℃～40℃, Humidity: 20%～80%
Storage conditions: Temperature: -20℃～70℃, Humidity: 20%～90%