Model: 500-17200-100
from $3,499
Color: Silver
2 configurations available
The Benchmark HPA4 Reference Headphone/Line Amplifier in Silver is a high-fidelity audio component designed for exceptional sound reproduction. It features an incredibly low THD+N of < -125 dB / 0.00006% and a wide frequency response from 0.1 Hz to 500 kHz (-3 dB), ensuring pristine audio clarity. With multiple balanced and unbalanced analog audio inputs and outputs, including a 4-pin XLR balanced headphone output and a 1/4" TRS unbalanced headphone output, this amplifier is ideal for discerning audiophiles and professionals seeking precise control and powerful, transparent sound for both headphones and line-level applications. Its touchscreen display provides intuitive control over its advanced features.
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 $3,499.
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 (Silver) is available at bhphoto, starting at $3,499.
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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