Portable, Battery-Powered Headphone Distribution Amplifier
User Guide | Fact Sheet | Panel Description | Accessories
The compact HX-3 Headphone Distribution Amplifier is the perfect accessory to quickly provide three high-performance stereo headphone feeds with individual level controls from line-level sources.
The HX-3 can produce very high headphone levels with extremely low noise and distortion.
| Technical Details |
|---|
| Frequency Response |
| 10 Hz - 50 kHz, -±1.0 dB, any input to any output, gain controls set to 50% |
| 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 |
| 1/4-inch and 1/8-inch inputs: +22 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 |
| 1/8-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 |
| 32 to 160 degrees F |
| 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 |
| 1.24 lbs |
| Included Accessories |
| 1/4-inch to 1/8-inch trs interconnect cable, rubber feet (4), locking DC jack |
