HX-3 User Guide and Technical Information
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Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
General Description
The HX-3 from Sound Devices is a portable, stereo headphone amplifier designed for critical audio
monitoring. The audiophile-quality headphone amp is ideal for adding headphone feeds for portable
and studio applications.
The HX-3 provides three independent headphone feeds from balanced or unbalanced, line sources. Each
headphone output has its own level control, peak LED, and ¼-inch output connector. With its extended
bandwidth and high drive capability the HX-3 can drive headphones of various impedances to high
levels with very low distortion, important for monitoring in high SPL environments. It is powered from
two-AA batteries or external DC.
The HX-3 will provide years of superb audio performance under the most punishing field conditions.
Features
High Performance Headphone Amplifier
• Three independent headphone outputs with individual volume controls.
• Dynamic range exceeding 120dB.
• 10 Hz to 50 kHz audio bandwidth.
• Capable of driving headphones to high levels with very low distortion.
• Peak indicators show overload of each headphone feed.
• Stereo / Mono switch.
Flexible Inputs / Outputs
• Two balanced XLR line level inputs or unbalanced ¼-inch and 1/8-inch stereo inputs.
• Loop output to connect additional HX-3’s in series for extra headphone outputs.
Flexible Powering
• Internal battery power (two AA) for convenient, low cost power.
• Excellent battery life - greater than 10 hours (nominal drive level with alkaline batteries).
• External 5-17 VDC powering.
Durable Mechanical Construction
• High strength aluminum chassis withstands punishing field conditions.
• Strap loops on each side for easy mounting or wearing.
• Panel-mounted connectors for strength and reliability.
• Easy access battery compartment for quick battery changes.
Summary of Contents for HX-3
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