Benchmark HPA4 High Res Headphone & Line Amp - Silver (no remote)

Hailed as the world’s Ultimate Line Amplifier, HPA4 is the product of a collaboration between Benchmark Media Systems and THX Ltd.

It is the first headphone and line amplifier to feature THX’s Achromatic Audio Amplification technology (or AAA) and reduces harmonic/intermodulation/crossover distortion by up to 40dB. The reduction is achieved by utilising a patented feed-forward topology which nullifies conventional distortion and noise mechanisms.

With HPA4, Benchmark and THX have produced a headphone and line amplifier capable of technically reaching maximum output and SPL without the usual side effect of distortion, delivering power, audio fidelity, speed and accuracy onto a silent canvas.

Specifications:

• THD < -125 dB (0.00006%)
• SNR 135 dB, unweighted, 20-20 kHz (> 131 dB THX)
• SNR (A-Weighted) 137 dB (> 135 dB THX)
• Frequency Response -0.003 dB at 10 Hz, -0.001 dB at 20 kHz
• Impedance 60 Ohms (near 0 Ohms THX)
• Output Noise < 1.9 uV at Unity Gain, 20-20 kHz (< 2.45 uV THX)
• Max Input 20 Vrms (+28 dBu)
• Max Output 20 Vrms (+28 dBu)
• Crosstalk < -133 dB @ 1 kHz, -116 dB @ 10 kHz
• Dimensions 220 x 99 x 212mm, 3.62kg