Model: APE2M
from $499
The Universal Audio Apollo e2m is a compact stereo headphone amplifier and line interface designed for professional audio environments. It offers pristine audio quality with a dynamic range of 120 dB on both analog inputs and outputs, and ultra-low THD+N figures. Featuring a single RJ45 Dante network I/O, two 1/4" TRS line inputs, two 1/4" TRS line outputs, and dual headphone outputs (1/4" and 1/8"), the e2m provides flexible connectivity and is powered conveniently via PoE, making it ideal for distributed headphone monitoring and line-level signal routing over a Dante network.
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 $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 Universal Audio Apollo e2m Stereo Headphone Amp and Line Interface with Dante is available at bhphoto, starting at $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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