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Product Description

The Superlux HA3D is a portable, stereo headphone amplifier designed for demanding and critical audio monitoring. This audiophile-quality headphone amp is ideal for adding headphone feeds for portable, studio and audio enthusiast applications. The HA3D provides 3 independent headphone feeds from balanced or unbalanced line sources. Each headphone output is controlled by the associated level control, equipped with independent peak LED, and 1/4-inch output connector. With its extended bandwidth and high current/voltage drive capability the HA3D can drive headphones of various impedances to high levels with very low distortion; important for monitoring in high SPL environments. It can be powered from two-AA batteries or an external DC supply. The HA3D provides 3 independent headphone feeds from balanced or unbalanced line sources. Each headphone output is controlled by the associated level control, equipped with independent peak LED, and 1/4-inch output connector. With its extended bandwidth and high current/voltage drive capability the HA3D can drive headphones of various impedances to high levels with very low distortion; important for monitoring in high SPL environments. It can be powered from two-AA batteries or an optional external DC supply.

• 3 independent headphone outputs with individual volume controls
• Frequency response from 10 Hz to 50 kHz
• 120dB dynamic range
• High power outputs easily drive headphones to high volume levels with very low distortion
• Individual peak indicators show overload of each headphone feed
• Master Stereo / Mono switch
• LED Battery life indicator, powered by 2 AA alkaline batteries, (10+ hours with Alkaline batteries with nominal drive levels), or an adapter with 5-17V DC output, (not supplied)
• 2 balanced XLR line level inputs plus 1 unbalanced 1/4-inch or 1/8-inch stereo inputs
• Loop output to connect additional HA3Ds in series for extra headphone outputs
• Sturdy Aluminum alloy housing with strap slots on side panels for easy mounting or wearing
• Stereo Headphone Amplifier

• Voltage Gain (Gain, Loop, Out Headphone output): Bal. Line, -3dB, 34dB; HP Input, -1dB, 35dB
• Output Clipping Level: +18dBu minimum with 600 Ohm load / +16dBu minimum with 300 Ohm load
• Headphone Output impedance: 200 Ohm
• Dynamic Range: 120 dB (Balanced line inputs)
• THD + Noise: 0.03% maximum (from 10 Hz-22k Hz at +10 dBu input and output level, 300 ohm load, 10 Hz-22k Hz filter bandwidth)
• Input Clipping Leve: l XLR: