Hifiman EF1000

Input Stage : Vacuum Tube SRPP Circuit
Headphone Output for 35Ω Load : 20w. pure Class A
Amplifier Output for 8Ω Load : 50w. pure Class A, 110w. Class A/B
SNR (A weight) : 108dB
Dynamic Range : 111dB
Weight :
Main Unit : 13.45 kg (29.65lb)
Power Supply : 11.2 kg (24.69lb)
Dimensions :
Main Unit : L460x280x170 mm3 (18.11" x 11.02" x 6.69")
Power Supply : L360x 200x170 mm3 (14.17" x 7.87" x 6.69")
SUSVARA :
Frequency Response : 6Hz-75kHz
Impedance : 60Ω
Sensitivity : 83dB
Weight : 450g (15.9oz)