Inside the H1 is Benchmark's signature headphone amplifier module, the HPA-2™. The sonic purity of the HPA-2™ fulfills even the most demanding headphone applications. The spectacularly clean performance offers true state-of-the-art listening with today's ultra-high performance headphones.

Specifications

Input Dual, 10k ohm balanced XLR type
Output Stereo unbalanced, for use with Tip/Ring/Sleeve plugs only
Output Z 30 Ω
Output Clip Dependant upon power voltage (+21 dBu @ ±15V and 60 Ω load)
Load Z 60 Ω or greater
Output Level Up to +20 dBu into 60 Ω (power source dependant)
Output Control Dual log taper response
Gain Range off to +15 dB
Bandwidth 20 Hz to 50 kHz min.
THD .005% typical (under load)
Noise Floor Better than -75 dBu at maximum gain
Power (Bipolar) ± 9 to ± 18 volts
Weight 1.17lbs (~.5 kilograms)

For more specifications, please download the H1 Product Manual.