Benchmark HPA4 Black

Headphone Amplifier

• Preamplifier with balanced and unbalanced inputs and outputs for high demands
• With THX Achromatic Audio Amplifier (AAA) technology
• For a realistic and fatigue-free listening experience
• Precise 256-step fully balanced relay gain control in 0.5 dB steps
• 100% Analogue
• Touch screen for easy access to functions such as balance control, input level offset, input name, dim function, remote, etc.
• Headphone outputs: 1 x TRS (6.3 mm jack), 1 x XLR (4-pin)
• THD < -125 dB (0.00006 %)
• Signal-to-noise ratio: > 135 dB (A-weighted)
• Frequency response: -3 dB @ 0.1 Hz and 500 kHz
• Output impedance: close to 0 Ohm
• Max. output power: 6 W into 16 Ohm
• Crosstalk: < -133 dB @ 1 kHz, -115 dB @ 10kHz (XLR4)
• Power requirement (nominal): 100 - 240 VAC, 50 - 60 Hz
• Protection systems: DC and short-circuit detection, overcurrent, overvoltage and thermal protection
• IR remote for control with optional Benchmark remote control (art. 501400 - not included in the delivery)
• Dimensions including feet (W x H x D): 22 x 10 x 21cm
• Weight: approx. 3.7 kg
• Colour: Black

Connections:

• 2x Stereo line input: balanced XLR
• 2x Stereo line input: unbalanced, Cinch
• 1x Stereo line output: balanced, XLR
• 1x Stereo line output: unbalanced, RCA
• 1x Mono sum output: balanced, XLR
• 2x Bidirectional 12V trigger connections

Balanced Line Outputs:

• Distortion factor < -125 dB (0.00006%)
• Signal-to-noise ratio: 137 dB (A-weighted)
• Frequency response: -3 dB @ 0.1 Hz and 500 kHz
• Output impedance: 60 Ohm
• Maximum input and output voltage: 20 Vrms (+28 dBu)
• Crosstalk: < -133 dB @ 1 kHz, -116 dB @ 10 kHz