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LD Systems HPA6

The LD Systems HPA6 is a highly flexible 1U 19“ rack format headphone amplifier with 6 fully independent channels and comprehensive features for a wide range of professional audio monitoring applications.

Each channel provides a 6.3 mm TRS headphone output on the front panel with level control, mono/stereo switching, discrete left/right muting and a 6.3 mm TRS Aux input with Main/Aux balance control for mixing in further signal sources. Four-segment LED meters permit visual output level monitoring, and two 6.3 mm TRS outputs per channel on the rear allow for connecting a total of 18 headphones.

The HPA 6’s main section features a master level control with eight-segment LED metering and 6.3 mm TRS input to mix in an additional source with all channels. The rear panel provides the main stereo inputs on balanced XLR and 6.3 mm TRS connectors and stereo outputs for daisy chaining multiple units.

  • Six Independent High-Power Headphone Amplifier Channels
  • Dual Function Balance/Mix Control per Channel
  • Front Panel Stereo Aux Input for each Channel
  • Multiple Monitoring Settings per Channel
  • Individual Output Level Control per Channel
  • Precision Four Segment LED Metering Per Channel
  • Master Volume Control w/ Eight Segment LED Metering
  • Front Panel Direct In Jack
  • One Front and Two Rear Mounted Headphone Jacks per Channel
  • Connects and Drives up to 18 Headphones Simultaneously
  • XLR and 1/4″ Main Inputs and Outputs
  • Parallel Main Outputs for Multiple Unit Use


Product number: LDHPA6

Product type: Headphone Amp:

Inputs: 8 (1 Main Input (Stereo), 1 Direct In (Stereo), 6 Aux In (Stereo))

Input connectors: XLR, 6.3 mm TRS

Line Outputs: Main Output (stereo, balanced)

Line output connectors: 6.3 mm jack, XLR

Headphones ouputs: 18 (6x front, 12x rear)

Headphones outputs: 6.3 mm TRS


Power output: 6 x 125mW

Minimum connected impedance: 8Ohm(s)

Frequency response: 20Hz – 20 kHz

Controls: Power, 6 x Input Mix Main/Aux, 6 x Mute L&R, 6 x Headphone Level, Main Input Level, 6 x Mono Switch

Indicators: power LED, 6 x mono LED, 6 x Mute L&R LEDs, Main Input/Direct In Level Meter (8-segment LED chain), 6 x channel level meter (4-segment LED chain)

Operating voltage: IEC power connector, 110 – 120 V ~ 50/60 Hz or 220 – 240 V ~ 50/60 Hz, switchable

Dimensions: 483 x 44 217mm

Weight: 3kg


For more information, please visit the manufacturer's website.