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Just what the doctor ordered for my Ampeg SVT and other tube amps.

Returned

Great product. Only wish I'd bought one years ago.

Wish I had known about these years ago.
I’ll never run an amplifier without it. I’ve got too much money invested in these things to risk voltage messing them up and this is the solution to that.

I just got this for my McIntosh C22 + MC60’s setup. I was using a variac to ramp up and run everything which was a pain, limited at higher volume, and nobody else could do it. After a few days of use, I feel it’s well worth the investment and will probably get another one to run other tube gear.

Cleans and adjusts power plus inrush current limiter!

Does exactly what it says it will do, provides accurate, clean, and constant voltage to your amp. Voltages from your wall can and do fluctuate. Maintaining an input voltage that matches what your amp was designed for is essential.

Works as intended. I see no scratches on the exterior, and appears to be built like a tank.

AmpRx Sicky Sick!! Very Awesome!!

I've been playing places where previously my amp would break up to the point of distortion before using a drive pedal. Since the purchase of the Brownie and using at these venues I believe it's helped clean up my amp as it should be! Thanks AmpRx!

An amazing product from an amazing company. Every guitar player needs one !!!

Great product- Brown Deluxe likes 114 v

Solidly built, and able to dial in any common output voltage setting between the two knobs. The knobs themselves are large enough to grip, with solid detents that won't slip or be bumped out of adjustment. I worried that, unlike a Variac where you have a wiper-style adjustment, I might not be able to get exactly the voltage I wanted, but have found this to be a non-issue with any normal wall receptacle power. My amps like getting the right power and, unsurprisingly, sound best at the input voltage they were designed to use! It is nice to always be sure they're getting the voltage, both for tone and component longevity.

makes my old Princeton sound better than ever

Such a great device to dial in my tube amps