HA-2 headphone vacuum tube amplifier

• SPECIFICATIONS - Headphone

  Input sensitivity	270mV (32Ω) 760mV (600Ω)
  Output voltage	2.4V (32Ω) 8.3V (600Ω)
  Power output	180mW (32Ω) 115mW (600Ω)
  Lowest output impedance	10Ω
  Input impedance	47KΩ
  Frequency response	15Hz-40kHz
  THD	0.5%
  S/N ratio	85dB
  Channel balance	<0.5dB
  Total gain	20dB
  Power requirement	AC220V 50-60Hz
  Weight	4.2kg
  Dimension	250(w)×280(d)×95(h)mm
  Power consumption	30W