from $78.9
The HeadAmp4 from ART is a high-quality four-channel headphone amplifier great for band rehearsals, home theater, or any application where you need multiple headphone connections. The stackable metal unit has both 1/4" and 1/8" input connectors for receiving a stereo signal from a mixer, tape deck, iPod, etc. Each of the four output channels also has a 1/4" and an 1/8" connector so you can connect up to eight of your favorite set of headphones or in-ear monitors.
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 $78.9.
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 ART HeadAmp4-Four-Channel Stereo Headphone Amplifier is available at adorama, bhphoto, starting at $78.9.
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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