Product Description
The Field-ready Headphone Amp You Need!
When you need a quality headphone amp that can keep up with your mobile rig, Sweetwater Sales Engineers are happy to recommend the Sound Devices HX-3. This 3-channel headphone amp provides you with the convenience of independent level controls for each headphone output and a variety of inputs, including XLR, 1/4″, and 1/8″ option. There’s also loop I/O for daisy chaining multiple HX-3s together. What’s more, the HX-3 headphone amplifier can run for up to 18 hours on just a pair of AA batteries, and a chassis-isolated 5-18V DC input accommodates all kinds of external battery power options.
Sound Devices HX-3 Headphone Distribution Amplifier Features:
- A 3-channel headphone amplifier that easily incorporates into your portable sound rig
- Professional-grade circuitry offers 125dB dynamic range with flat frequency response
- Each of the 3 outputs includes an independent volume control
- Globally switchable between stereo and mono monitoring
- All-metal, chassis-mounted connectors include balanced XLR inputs
- Loop I/O makes it easy to daisy-chain additional headphone amps
- Can run up to 18 hours on 2 x AA and includes input for 5-18VDC battery
- Housed in a high-strength, extruded aluminum chassis with protective metal end panels
Additional Information
Frequency Response | 10 Hz – 50 kHz, -±1.0 dB, any input to any output, gain controls set to 50% |
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Voltage Gain | 34 dB from balanced line to headphone output, 35 dB from headphone input to headphone output |
Output Clipping Level | +18 dBu minimum with 600 ohm load, +16 dBu minimum with 300 ohm load |
Headphone Output Impedance | 200 ohms |
Input Clipping Level | XLR: +24 dBu minimum |
Dynamic Range (balanced line inputs) | 120 dB minimum |
THD + Noise | 0.03% maximum (from 10 Hz to 22 kHz @ +10 dBu input and output level, 300 ohm load, 10 Hz – 22 kHz filter bandwidth) |
Inputs | XLR: electronically balanced, 22k ohm input impedance, 1/4-inch unbalanced: 9.1k ohm impedance |
Internal Voltage Rails | ±15 V, regulated |
Power Source | Internal: 2 AA alkaline batteries, 18 hours life typical with nominal levels. External: 5 – 17 VDC via threaded coaxial connector (5.5 mm outer diameter, 2.1 mm inner diameter), pin positive, sleeve negative. |
Power LED | Green indicates power and good battery. Red indicates power with low batteries. LED turns red when ~ 4 hours of battery life remain. |
Operating Temperature Range | 0 to 70 degrees C |
Dimensions | 43 mm x 94 mm x 140 mm (h x w x d) (1.7" x 3.7" x 5.5") |
Weight (unit only) | 0.56 kg |
Included Accessories | 1/4-inch to 1/8-inch trs interconnect cable, rubber feet (4), locking DC jack |