Product Description
Avlex HA3D Stereo Headphone Amplifier
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.
FEATURES:
- 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
SPECIFICATIONS:
- Frequency Response: 10 Hz-50 kHz, ±1.0 dB, any input to any output, gain control set to 50%
- Voltage Gain (Gain, Loop, Out Headphone output): Bal. Line, -3dB, 34dB; HP Input, -1dB, 35dB
- Output Clipping Level: +18dBu minimum with 600 Ω load / +16dBu minimum with 300 Ω load
- Headphone Output impedance: 200 Ω
- Dimensions (with foot pads): 1.69″—3.7″—5.51″
- Weight: 1.24 pounds
- Input Clipping Leve:l XLR:+24 dBu
- Dynamic Range: 120 dB (Balanced line inputs)
- THD + Noise: 0.03% maximum (from 10 Hz-22k Hz @ +10 dBu input and output level, 300 ohm load, 10 Hz-22k Hz filter bandwidth)
- Input Impedance: XLR-Balanced – 22k ohm, 1/4″ & 1/8″ Unbalanced – 9.1k ohm Note: only one set of inputs (balanced or unbalanced) should be connected at a time
- Operating Temperature: 32°-160°F
- Internal Voltage Rails:15V, regulated
- Loop Output Unbalanced: 200 Ω output impedance
