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LD Systems HPA 1

Amplifier for headphones and wired IEM

The 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 in 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.

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Wishlist

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SKU LDHPA1 CategoriesAccessories for PA & Sound Equipment, Headphones & Headphone Amplifiers, PA & Sound Equipment TagsHeadphones Amplifiers, LD Systems

Description

Compact and powerful headphone amplifier
Also ideal for wired in-ear monitoring
Balanced XLR inputs L/R
3.5 mm AUX input for click and playback
Precise volume and balance controllers
Built-in limiter for distortion-free playback and feedback protection
Switchable mono sum for a focused sound
Ultra stable housing with soft-touch surface
Practical belt clip for direct on-body operation
Connection for a 9 V DC adapter

Additional information

Product Type	Headphone Amp:
Inputs	AUX In (Stereo)
Input Connectors	3.5 mm stereo jack (AUX In) , XLR-F (L + R Input, balanced)
Input Impedance	10000 (3.5 mm jack) Ohm(s) , 6000 (XLR In) Ohm(s)
Input sensitivity	-6 (3.5 mm jack) dBV, 3 (XLR In) dBu
Outputs	2
Output Connectors	6.3 mm jack
Power Output	4 x 100 mW
Controls	Balance L/R , Power / Volume , Stereo/Mono (Focus) switch
Indicators	Battery (low battery: red) , Peak (Amber) , Power LED (Power ON: green) , Signal (green)
Current Draw	Nom. 0.07 A / Max. 0.15 A
Cabinet Material	Plastic
Cabinet surface	Soft Touch
Cabinet Colour	Black
Width	80 mm
Height	42.5 mm
Depth	133 mm
Weight	0,155 kg
Accessories (included)	Belt Clip
Max. Input Level	7 (3.5 mm jack) dBV, 16 (XLR In) dBu
Protection circuits	Audio Limiter , Max. Input leveling , Power OFF – Mute relay
Headphones ouputs	3.5 mm TRS
Power Output (1% THD @ 33 Ohm Load)	Power Output (1% THD @ 33 Ohm Load)
Minimum connected impedance	16 (per channel) Ohm(s)
Frequency response	20 – 40000 Hz
THD	0.04%
Operating voltage	9 V block , 9 V DC power supply