Model: 500-17200-101
from $3,599
Color: Silver
2 configurations available
The Benchmark HPA4 Reference Headphone/Line Amplifier is a high-performance audio component designed to deliver pristine sound for both headphones and line-level applications. This silver amplifier features an exceptionally low THD+N of < -125 dB / 0.00006% and a wide frequency response from 0.1 Hz to 500 kHz (-3 dB), ensuring accurate audio reproduction. With multiple balanced and unbalanced analog audio inputs and outputs, including XLR and RCA, along with dedicated balanced and unbalanced headphone outputs, the HPA4 provides versatile connectivity for discerning audiophiles and professionals seeking uncompromising audio fidelity.
Match your amplifier's power output (Watts RMS) to your speakers' sensitivity and impedance (Ohms). Do not obsess over astronomical peak wattage claims; RMS is the true measure of sustained power. Available from $3,599.
Amplifiers have practically zero ongoing costs aside from electricity, which is highly variable based on usage volume and class type (Class A uses more power than Class D). Good amplifiers can last decades with proper care. Consumables are virtually non-existent unless using tube amps.
Common Failure Modes
Solid-state amplifiers are extremely reliable. Failures usually stem from blown capacitors, overheated output transistors, or physical wear on volume potentiometers. Proper ventilation prevents 90% of heat-related failures.
Match your amplifier's power output (Watts RMS) to your speakers' sensitivity and impedance (Ohms). Do not obsess over astronomical peak wattage claims; RMS is the true measure of sustained power. Class D amplifiers run cool and are compact, while Class A/B offer traditional warm sound at the expense of heat and size.
Solid-state amplifiers can last 20+ years. Capacitors may eventually dry out and need replacement.
The Benchmark HPA4 Reference Headphone/Line Amplifier with Remote Control (Silver) is available at bhphoto, starting at $3,599.
Amplifiers have practically zero ongoing costs aside from electricity, which is highly variable based on usage volume and class type (Class A uses more power than Class D). Good amplifiers can last decades with proper care. Consumables are virtually non-existent unless using tube amps.
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