The Brownie, a voltage controller power supply for modern amps and the first of its kind. The Brownie provides unparalleled control, flexibility, and protection specifically for modern tube amplifiers by allowing the player to both increase and decrease voltage with volt by volt precision.

Today, should be receiving 120V AC from the wall, but depending on where you are and what time of day it is, you can receive anywhere from 120V to 129V. That's not good for your amplifier, or your ears. Depending on the amplifier, a Brownie user might discover that modern gear runs optimally at 116-118V. It's impossible for an amplifier designed for 110V or 120V to sound or operate anywhere near the way it should at 129V.

Why is consistent voltage so important?
The tone and performance of all tube amplifiers rely heavily on the input voltage available from the wall or other power source. Variations in input voltage can drastically affect overall sound and performance and can shorten the life of the components, leading to excessive repairs and frustration.

While 120V is the expected standard, typical variance in homes and commercial buildings like music venues and recording studios can range from 115V to 130V. That's not safe for an amplifier, tubes, or tone quality. Depending on the amplifier or gear, a player might discover that modern gear runs optimally at 117-120V, or as low as 108-110V for vintage gear. It's impossible for an amplifier designed for 110V or even 120V to sound or operate… read more anywhere near the way it should at 125-130V.

AmpRx products are adjustable AC power supplies for amps and tube gear that allow the user to discover and supply the optimal input voltage for their equipment, get a tone they love, and protect their gear in any environment, regardless of the normal variations in voltage.

How It Works
- Power the Brownie: Connect the Brownie to your power source, set it to Bypass and turn it on.
- Set Voltage: Use the intuitive control knob to decrease or increase voltage to your desired level.
- Connect Your Gear: Plug your amplifier into the Brownie and power it on.
- Monitor Performance: The onboard display shows real-time voltage and amperage readings, ensuring precision and confidence. You can continue to change the settings of the Brownie while your amp is powered, allowing you to feel the difference in real-time and find your amp's sweet spot.
- Happy Playing! Experience optimal tone and performance.

Features:

- Designed for Modern Amplifiers: The first product in the AmpRx line to both decrease and increase voltage, designed specifically for modern amplifiers.
- Precise Control: Adjust voltage in ultra-precise -1V increments when reducing voltage (up to -7V total) and up to +5V in +3V and +5V increments when increasing. In almost any situation, you can dial in 117-120V.
- Flexible Fuse Options: 2A for smaller amps, 4A for larger amps. Your choice.
- Compact and Portable: Smaller and lighter than the original BrownBox, making it easy to transport for gigs, studios, and home use.
- Price: The Brownie is an affordable option for musicians seeking professional-grade voltage control.
- Hand Built for Reliability: Hand-wired by humans for durability and performance.

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