Announcing Brilliance, Belleson's new phono stage amplifier!

Advance order special price $7650! (preorder for delivery early 2024)

  • The quietest noise floor you've never heard
  • Sixteen custom discrete op amps
  • WiFi HiFi™ browser based remote control
  • Two stereo input pairs
  • Moving coil or moving magnet
  • Variable gain: 31dB to 71dB
  • Variable resistive and capacitive loading
  • Mute function
  • Double Superpower™ regulated
  • Ten Octal Opto™ optically isolated custom switches
  • Fully differential inputs
  • Fully DC coupled
  • Accelerated auto–null servo loop

SPX, the champion in voltage regulation

Well into our second decade supplying the highest performance voltage regulators, we at Belleson are glad to continue providing products to improve your audio systems and more.

Belleson SPX Variable


Belleson Superpower voltage regulators are available from 1V to 100V, with current to 10A. They are used as linear regulators on raw linear supplies and to clean up digital switching noise from switched mode power supplies. Our patented design delivers the highest available performance for critical regulation parameters such as noise, ripple rejection, dynamic transient response, output impedance and load regulation. They are used in thousands of DIY enhancements across the world, and by multiple audio equipment manufacturers making some of the world's finest audio reproduction systems.

Variable or fixed output

Set Vout with a single resistor

Lowest output impedance

<20mΩ from DC to 200kHz

Highest ripple rejection

120dBV+ from DC to 80kHz

Fastest dynamic step response

1μsec settling for 250mA step

Very low noise


Insulated Power Transistor

Attach directly to heat sink—no thermal pad!

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


This site is being gradually updated. If you have any problems please email

The Industry Standard SPX

Order now from our store.

  • 5V to 30V output
  • World's lowest output impedance
  • Superb ripple rejection (135dBV)
  • Instant step response
  • Extreme low noise
  • TO-220 footprint
  • No thermal pad needed!

High Voltage!

Tube lovers—SPHV is BACK!

  • Variable output 5V to 450V
  • Up to 500mA output current
  • Super low 0.5V drop-out at 100mA
  • Small TO-220 footprint!
  • Low output impedance
  • Fast response
  • Low noise

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.