|Size (L x W x H)||14 cm x 8 cm x 5 cm|
- 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
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.
|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|
|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 outputs||3.5 mm TRS|
|Power Output (1% THD @ 33 Ohm Load)||2 x 1,65 Vrms|
|Minimum connected impedance||16 (per channel) Ohm(s)|
|Frequency response||20 - 40000 Hz|
|Total Harmonic Distortion (THD)||0.04%|
|Controls||Balance L/R, Power / Volume, Stereo/Mono (Focus) switch|
|Indicators||Battery (low battery: red), Peak (Amber), Power LED (Power ON: green), Signal (green)|
|Operating voltage||9 V block, 9 V DC power supply|
|Operating voltage||9 V DC|
|Max. Current||Nom. 0.07 A / Max. 0.15|
|Accessories (included)||Belt clip|