from $219
The Rolls RA102 is a professional 10-channel headphone amplifier designed for studios, live sound, and broadcast applications. It features ten 1/4" TRS headphone outputs and ten 1/8" / 3.5 mm TRS outputs, along with flexible input options including XLR 3-Pin balanced and stereo RCA unbalanced phono inputs. With a frequency response of 20 Hz to 30 kHz, a signal-to-noise ratio of 90 dB, and a low THD+N of less than 0.008%, the RA102 delivers clean, high-quality audio to multiple listeners simultaneously. Its compact 1U rack-mountable design (19 x 3.12 x 1.75") and robust construction make it a reliable solution for distributing audio to multiple headphones in professional environments.
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 $219.
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 Rolls RA102 10-Channel Professional Headphone Amplifier is available at bhphoto, starting at $219.
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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