RM349.00 RM500.00
LD Systems LDHPA1 Personal Monitor Amplifier for Headphones and Wired IEM *LAST UNIT CLEARANCE
End In :
Price RM349.00 RM500.00
Brand LD Systems
Size (L x W x H) 14 cm x 8 cm x 5 cm
Availability In Stock
  • 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 2
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 ouputs 1
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
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