from $79
The iFi audio UNO DAC and Headphone Amplifier is a compact audio device designed to enhance your listening experience. It features an ESS ES9219 Sabre DAC chipset, supporting high-resolution audio up to 32-bit/384 kHz PCM and 11.2 MHz DSD. With a frequency response of 10 Hz to 80 kHz and a dynamic range of ≥ 115 dB, it delivers clear and detailed sound. The UNO offers a 3.5mm headphone output with ≥ 211 mW into 32 Ohms and RCA line outputs, making it suitable for driving a wide range of headphones and connecting to external audio systems. Powered via USB-C, this lightweight unit (0.2 lb) is compatible with Windows and macOS, providing a significant upgrade for your desktop audio setup.
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 $79.
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 iFi audio UNO DAC and Headphone Amplifier is available at bhphoto, starting at $79.
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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