Meet SPX, the champion in voltage regulation

This year (2020) begins our second decade supplying the highest performance voltage regulators. We're glad to be able to deliver our products for so long and will continue to supply your future product needs as they change.

Belleson SPX Variable

SPX—the new standard


Set Vout with a single resistor, on all pinouts

Insulated Power Transistor

Attach directly to heat sink—no thermal pad!

Lowest output impedance

<25mΩ at 20kHz, 50mΩ at 200kHz

Highest ripple rejection

120dBV+ from DC to 80kHz

Fastest dynamic step response

1μsec settling for 250mA step

Very low noise

<1μV/V, as good as ever

Belleson has the highest performance voltage regulators in the industry. You can have a super high performance regulator for your system, whatever voltage or current it requires!

What's so super?

Belleson combined two great ideas into an amazing symbiosis to create the latest advancement in super regulators. Bootstrap powered by its own clean and quiet output voltage, the Superpower has amazing line and load regulation, low noise, low drop-out voltage, low output impedance and super fast dynamic performance.

Superpower can replace voltage regulators in your audio systems and give you the jaw-dropping performance you desire, with

  • better overall performance than anything available
  • a standard TO-220 footprint of monolithic regulators
  • more current than any other aftermarket regulator

For technical background, see this page. For specific performance information, see the menu items. For listening evaluations, see the Comments page

EU Distributor

We are looking for a distributor in the EU, please contact us if you are one or know one!

The Industry Standard SPX
from Belleson!

  • Variable output 5V to 30V
  • World's lowest output impedance
  • Better ripple rejection (135dBV at 60Hz)
  • Faster step response
  • Same low noise
  • Same TO-220 size physical form factor
  • No thermal pad needed
Order now from our store.

Belleson accepts credit card payments or PayPal

SPHP—1000 Watts for your music server!

SPHP, a 10A Superpower with fixed or adjustable output voltage from 5V to 100V

  • Same low noise
  • Same blazing step response
  • Same great ripple rejection.
Lots more current and much higher output voltage. Now for sale on our order page See more information in the data sheet here.