Superpower compared to an Optima Red Top Battery

We finally found something as good as Superpower!

The Optima Red battery is as good as (ok, ok, we admit it, better than) the Belleson Superpower. Unloaded noise is lower and dynamic performance is just as good.

Dynamic performance of a 2A current step was compared between a Superpower and an Optima Red Top 34 battery. You can see the specifications for this 38 pound (17.3 kg) behemoth here.

The measurement was made by using a power transistor to sink 2A from the Optima and from a SPJ78 12Vout Superpower in a similar manner to all the dynamic tests seen here on our site.

Superpower on Optima
In the ring shaking hands are the Flyweight Superpower SPJ78 at 2oz (56gm) vs. Super Heavyweight Optima Red Top 34 at 38lb (17kg).

Dynamic performance

Superpower, 2A pulse

Superpower 2A dynamic response
Superpower delivering 2A. The bottom trace shows Vout measured across a ½Ω load resistor. Top trace shows Vout to ground. Notice no-load noise on the right side of the top trace vs. Optima.

Superpower, 2A pulse magnified

Superpower 2A dynamic response magnified
A view of the SPJ78 loaded to unloaded transient with horizontal scale magnified to 5µsec/div. Rise time is about 2.5µsec with an overshoot that settles in another 2µsec.

Optima Red Top Battery, 2A pulse

Optima 2A dynamic response
Optima delivering 2A. Bottom trace shows Vout across a ½Ω resistor (2A/div). Top trace shows Vout to ground. The response is very fast and clean and the no-load noise is very low.

Optima 2A pulse expanded

Optima 2A dynamic response magnified
An equivalently expanded view of the Optima transient. Rise time is almost instant, less than 1µsec, so fast that it overshoots with ringing. Ultimately the settling time is about the same as Superpower.


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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

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SPHP—1000 Watts for your music server!

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

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

Build a power supply

A PCB and parts list for building a compact dual positive or positive+negative power supply are on this new page.

Transformer Calculator!

Use the Belleson Transformer Calculator to calculate the minimum Vrms voltage of a transformer for your Superpower based supplies.

It's Official

We're proud to announce the U.S. Patent and Trademark Office has granted patent 8,294,440 to the Superpower design.

Use the Superpower regulator in...

  • Headphone amps
  • DACs
  • Buffers
  • Clocks and reclockers
  • Preamps
  • Microphone preamps
  • Phono stages
  • Phono motors
  • Tube preamps and input stages
  • Line powered guitar effects boxes
  • Anywhere an extremely clean, quiet, dynamic power source is needed