Model: HXL
from $169
The Audioengine HXL is a portable headphone amplifier and DAC designed to enhance your listening experience on the go. This compact device features both 4.4mm balanced and 3.5mm stereo headphone outputs, delivering exceptional audio clarity with a signal-to-noise ratio of up to 132 dB and a THD+N of 0.0002%. Supporting PCM up to 32-bit/384 kHz, the HXL connects via a single USB-C port for digital input and power, making it ideal for use with a variety of digital sources to drive headphones with impedances from 10 to 600 ohms.
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 $169.
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 Audioengine HXL Portable Headphone Amplifier and DAC is available at bhphoto, starting at $169.
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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