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LD Systems HPA 1 Headphone and Wired In Ear Monitoring IEM Amplifier
LD SystemsThe LD Systems HPA 1 is a versatile headphone amplifier with high power output for stage, studio and home recording and is the perfect solution for wired in-ear-monitoring. The compact device iin a rugged, ergonomically shaped plastic housing with soft-touch surface and practical belt clip is very extensively equipped.
In addition to locking XLR connectors for the stereo signal L/R input, the HPA 1 has a balanced 3.5 mm stereo jack as AUX input, which can be used in parallel for clicks or playback. It is protected for safe operation against excessive input levels; a hollow pin socket with negative internal contact enables the connection of a network adapter for fixed operation.
A 3.5 mm stereo jack is provided as earphone and headphone output. Volume level and balance can be set with easy-grip knobs, a push-button switches between the summed mono and stereo signals. A full-fledged limiter is integrated for distortion-free playback and as protection against feedback.
The LD Systems HPA 1 has bi-colour LEDs to facilitate the features overview, which displays the response of the limiter during peaks and the battery status. At 165 grams, the headphone amplifier is distinctly light-weight and can be operated for up to 12 hours thanks to a high quality 9 V block battery.
Specifications
- Height: 42.5mm
- Width: 80mm
- Depth: 133mm
- Weight: 155 Grams
- XLR Inputs: 2
- 5mm Stereo Inputs: 1
- XLR Input Impedance: 6000 Ohms
- Aux Stereo Jack Impedance: 10,000 Ohms
- Protection Circuits: Maximum Input Levelling, Audio Limiter, Power Off – Mute Relay
- Power Output: 2 x 165Vrms
- Minimum Connected Impedance: 16 Ohms (Per Channel)
- Frequency Response: 20 – 40,000Hz
- THD: 0.04
- Controls: Balance L/R, Stereo/Mono Switch, Power/Volume
- Indicators: Peak, Power LED, Battery, Signal
- Operating Voltage: 9 V DC
- Current Draw: Nom. 0.07 A / Max. 0.15A
- Cabinet Material: Plastic