• Dual output headphone amplifier
  • Built-in Phonitor Matrix functionality
  • Adjustable speaker angle crossfeed control
  • Stereo/Mono switchable
  • Designed for 500-series racks and lunchboxes
Normally ships 5-9 days

HPm is a modular headphone amplifier and the first 500-series module to feature SPL’s  hugely popular Phonitor Matrix technology.

In just a single dual-slot module, HPm can power two independent headphone outputs each from their own separate amplifiers. This allows for no-compromise quality SPL-standard headphone amplification as well as independent control for both channels.

  • Maximum input & output gain: 21 dBu
  • Input impedance: 10 kΩ
  • Output impedance: 150 Ω
  • Common mode rejection: > 82 dB
  • Frequency range (-3 dB): 10 Hz – 100 kHz
  • THD & N (0 dBu, 10 Hz – 22 kHz): 0.03 %
  • Noise (A-weighted): -92.3 dBu
  • Dynamic range: 113 dB
  • Unit weight: 0.8 kg

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