The LD Systems HPA 6 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.

• Type: 6-channel
• Inputs: Main Input (Stereo), Direct In (Stereo), 6 x Aux In (Stereo)
• Input Connections: XLR and 6.3 mm jack L&R (Main Input, balanced), 6.3 mm stereo jack (Direct In), 6.3 mm stereo jack (Aux In)
• Input Impedance: 13 kOhm
• Line Outputs: Main Output (stereo, balanced)
• Line Output Connectors: XLR and 6.3 mm jack L&R
• Headphone Outputs: 6 x 3
• Headphone Output Connectors: 6.3 mm stereo jack
• Power Output: 6 x 125 mW
• Minimal Connected Impedance per Channel: 8 ohms
• Frequency Response: 20 Hz - 20.000 Hz
• Controls: Main Input Level, 6 x Input Mix Main/Aux, 6 x Headphone Level, 6 x Mono Switch, 6 x Mute L&R, Power
• Indicators: Main Input/Direct In Level Meter (8-segment LED chain), 6 x channel level meter (4-segment LED chain), 6 x mono LED, 6 x Mute L&R LEDs, Power LED
• Power Supply: IEC power socket
• Operating Voltage: 220 - 240 V AC, 50 - 60 Hz / 110 - 120 V AC, 50 - 60 Hz
• Power Consumption: 40 W
• Cabinet Material: metal
• Cabinet Surface: painted
• Width: 483 mm
• Height: 44 mm
• Depth: 217 mm
• Accessories (included): power cord