Sound Devices HX-3

The HX-3 can produce very high headphone levels with extremely low noise and distortion.

Great for radio, television, film, and music production applications, the battery-powered HX-3 accepts balanced XLR line-level inputs or unbalanced 1/4-inch and 1/8-inch stereo inputs. Its 1/4-inch loop-out can connect multiple HX-3's for additional headphone outputs. Headphones are connected to panel-mounted 1/4-inch stereo connectors.

The HX-3 has a durable aluminum chassis to withstand the punishment of field and studio environments. The unit is powered by inexpensive batteries (two-AA) or external 5-18 VDC.

The HX-3 can add headphone outputs to the 552, 302, MixPre-D, MM-1, and USBPre-2.

• Three isolated headphone outputs with individual volume controls.

• 125 dB dynamic range with flat frequency response.

• Durable 1/4-inch connectors, panel mounted for strength.

• Stereo or mono monitoring.

• Peak LED indicates headphone overload.

• Two balanced XLR line level inputs or unbalanced 1/4-inch and 1/8-inch stereo inputs.

• Loop Output to connect additional HX-3's in series.

• All-metal connectors solidly mounted to the chassis for durability and RF immunity.

• Free from "Pin-1" grounding problems.

• Internal battery-power for up to 18 hours from two AA alkaline batteries.

• Chassis-isolated 5 to 18 VDC input for easy external DC powering.

• Power LED indicates low battery power.

• High strength, extruded aluminum chassis with protective metal end panels.

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