PowerBox 6pro NCore precision analog LX521


All you need between your analog source (turntable, preamp, DAC etc.) and your LXspeakers.

Purely analog signal processing for LX521®.

Volume should be adjusted upstream of the PowerBox

Available on backorder

SKU: PowerBox 521 Category:


  • Purely analog precision Audio Signal Processor, followed by 5 Hypex NCore power amplifiers with tailored performance: 1x100W, 2x125W, 2x250W, all amps are 2Ohms capable!
  • Balanced signal XLR input with 2-step rumble filter, RCA adaptor available
  • High End precision Audio Signal Processor with shortest feedback loops and dedicated ground returns.
  • New generation cascaded crossover ASP v2.0
  • Well decoupled +/-15V ASP rails, ultra lo noise LDOs
  • Tight 1% capacitors , selected for lowest distortion.
  • Tight 0,1% metal film precision audio resistors.
  • One PowerBox feeds one LX521 side, for a LX521 stereo pair order two PowerBoxs
  • High performance audio OpAmps, JFET and CMOS.
  • High current SpeakON output plugs: 2 SpeakONs replace 10“banana” plugs.
  • +12dB gain option (Jumper at case bottom)
  • Slim & quiet fan-less design in a massive 3mm full aluminum case: ca. 44 x 36 x 5,5 cm.
  • 12V trigger input.



This is a high power device (more than 1000W) for professional use acc EN 61000-3-2 (Class A). Its connection to the electric network may require approval by the local electricity supplier.

Additional information

Weight6 kg