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LD Systems HPA 1
Amplifier for headphones and wired IEM

Perfect for wired in-ear monitoring or as a standalone headphone amplifier in the studio or at home, the high-powered LD Systems HPA 1 Headphone Amplifier comes packaged in ergonomic, soft-touch housing with a belt clip for portable use.

For input, the HPA 1 is equipped with locking XLR sockets and also a 3.5mm mini-jack for an auxiliary signal, such as playback or a click track.  A standard 3.5mm mini-jack output makes for easy connection of almost any headphones or in-ear monitors.  Push button selectors switch between mono and stereo modes, while volume and balance are controlled and set with easy grip knobs and the integrated limiter ensures distortion-free playback, also helping to prevent feedback.

The LD Systems HPA 1 uses bi-colour LED's to indicate status and, distinctly lightweight at only 165g, it will stay comfortable long before the (up to) 12 hours of battery life are up.

  • 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

    • 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
    • Current draw: 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



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    GAK.CO.UK LTD is registered in England and Wales 04578270. Registered office: 30 - 34 North Street Hailsham East Sussex BN27 1DW GAK.CO.UK LTD acts as a credit broker and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. GAK.CO.UK LTD is an appointed representative of The Guitar Amp and Keyboard Centre Limited which is authorised and regulated by the Financial Conduct Authority. GAK.CO.UK LTD FCA registration number is 731400. The Guitar Amp and Keyboard Centre Limited FCA registration number is 684977. Credit provided subject to age and status

    V12 Retail Finance Limited. Registered in England and Wales 4585692. Registered office: One Arleston Way, Solihull, B90 4LH. Authorised and regulated by the Financial Conduct Authority. Our FCA reference number is 679653.

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