epsilon 4ch Vacuum Tube Hybrid Power Amplifier

sound quliaty car  audio power amp ,super natural sound , the price not  expersive ,
  low noise and decrease distortion,
Output Power(RMS)
Stereo@4Ohms: 4x75W
Stereo@2Ohms : 4x110W
T.H.D : < 0.01%
Freq. Response : 20Hz-20kHz
S/N Ratio : >90dB
Separation@1kHz: >65dB
Input Sensitivity : 0.2-4V
Crossover : HP 40Hz-200Hz
Input Impendance : 20kOhm
Damping Factor : >150