Benchmark HPA4 Headphone and Line Amplifier

£3,499.00

In stock

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.

Benchmark HPA4 Headphone and Line Amplifier

More Information
Manufacturer Link	Benchmark HPA4 Headphone and Line Amplifier
Manufacturer	Benchmark
Free warranty	3 years
Delivery Charge	Free
Delivery Time	Normally 1 - 5 Working Days (Covid-19 and Brexit Delays Possible, contact us for more information)
Card Surcharge	No

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Details

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Benchmark HPA4 Headphone and Line Amplifier

Main Features

THX-888 (AAA™) Headphone Amplifier
Benchmark Line Amplifier
256-Step Fully-Balanced Relay Gain Control, 0.5 dB Steps
Precision Timed Relay Closures
Precision Metal Film Resistors
Gold-Contact Relays
Balanced and Unbalanced I/O
6 Watts into 16 Ohm Headphones
11.5 Vrms into 300 Ohm Headphones
Short-Circuit Protection
DC Protection
Over-Voltage and Over-Current Protection
Thermal Protection
Touch Screen Control
IR Remote Control (optional)
2 Balanced Stereo Line Inputs
2 Unbalanced Stereo Line Inputs
1 Balanced Stereo Line Output
1 Unbalanced Stereo Line Output
1 Balanced Mono Sum Output
2 Bidirectional 12V Trigger Ports

Performance

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)

Maximum Input:

20 Vrms (+28 dBu)

Maximum Output:

20 Vrms (+28 dBu)

Crosstalk:

< -133 dB @ 1 kHz, -116 dB @ 10 kHz

Power

Power Supply:

Internal

Typical Input Power:

18W

Max Input Power:

35W

Standby Power:

0.33W (when off)

Physical Properties

Dimensions:

WxHxD 8.65 x 3.88 x 8.33" (Including Feet)

Weight:

8.0 lbs (12 lbs shipped)

Benchmark HPA4 Headphone and Line Amplifier