Benchmark Media Systems H1

The H1 is an ultra-high resolution stereo headphone amplifier with current boosted outputs that will drive headphones with impedances down to 60 ohm.

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.

• Input: Stereo 200 kO Balanced Inputs with over-voltage protection
• Input Clip: +26.5 dBu with ±15 volt supplies
• Output: Stereo, for use with 1/4" Tip/Ring/Sleeve plugs only, short-circuit protected
• Output Impedance: 0 Ω
• Load Z: 60 Ω or greater
• Output Clip: Dependant upon power voltage and load [+20 dBu @ ±15V and 60 O load]
• Load Impedance: 30 O or higher
• Output Level: Up to +20 dBu into 60 O [dependent upon power source]
• Output Control: Dual log taper response
• Gain Range: Off to +20 dB
• Bandwidth: 0.1 Hz to 300 kHz minimum
• THD+N: 0.0003% typical at headphone inputs - under load!
• Noise Floor: Better than -75 dBu at maximum gain
• Power: (Bipolar) ± 9 to ± 18 volts, bridge-rectified, maximum peak current needed = 1.1 Amp at maximum peak output into 30 O
• Peak Output: 7.5 watts [±18 volt supplies. 30 O load]
• Max Avg Output: 1.35 watts [-8 dB peak to average ratio]

Dimensions and Weight
• 5.5” (139.7mm) Deep
• 1.5” (381.1mm) High
• 5.5” (139.7mm) Wide.
• Weight 1.17lb