Data Sheet

www.superlux.com.tw
EN
HA3D
COMPACT HEADPHONE
AMPLIFIER
Description
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 external DC. The HA3D will provide years of superb
audio performance under the most demanding field
conditions.
Features
• 3 independent headphone outputs with individual
volume controls.
• Frequency response from 10 Hz to 50 kHz.
• ≥120 dB dynamic range.
• High power driving capability, drives headphones to
high levels with very low distortion.
• Individual peak indicators show overload of each
headphone feed.
• Master Stereo / Mono switch.
• Powered by 2 AA alkaline batteries or adapter with
5–17V output.
• Versatile input and output connectors.
• Sturdy Aluminum alloy structure.
Specications
Frequency Response
10–50,000 Hz, ±1.0 dB,
Any input to any output, gain control
set to 50%
Voltage Gain
Gain, Loop Out, Headphone output
Bal. Line: -3 dB, 34 dB
HP Input: -1 dB, 35 dB
Output Clipping Level
+18 dBu Minimum with 600 Ω load
+16 dBu Minimum with 300 Ω load
Headphone Output
impedance
200 Ω
Input Clipping Level XLR3F: +24 dBu
Dynamic Range ≥120 dB (Balanced line inputs)
THD + Noise
0.03% maximum
(10–22,000 Hz @ +10 dBu input and
output level, 300 Ω load, 10–22,000
Hz lter bandwidth)
Inputs
XLR3F electronically balanced,
22,000 Ω impedance
1/4" unbalanced, 9,100 Ω impedance
1/8" unbalanced, 9,100 Ω impedance
Note: only one set of inputs (balanced
or unbalanced) should be connected
at a time
Loop Output Unbalanced, 200 Ω output impedance
Internal Voltage Rails ±15V, regulated
Power
Internal: 2 AA alkaline batteries,
12 hours life typical driving one 75
Ω headset; External: 5-17 V via
threaded coaxial connector, (5.5mm
outer diameter, 2.1mm inner diameter),
pin positive, sleeve negative.
Voltages above 17 VDC cause no
damage to unit, but will open an
internal poly fuse. Poly fuse will reset
when voltage is removed.
Power LED
Green indicates power and good
battery. Red indicates power with low
batteries.
LED turns red when approximately 4
hours of battery life remain.
Finish Black
Dimensions
H43 × W94 × D140mm
(1.69" × 3.7" × 5.51")
Net Weight (Unit
Only)
560g (19.75 oz.)
Included
Rubber
Feet × 4
1M length, tip-ring-sleeve inter-
connection cable,
1/8" (3.5mm) to 1/4" (6.3mm)