Handmade, old-school audio amplifiers

Rocklin, California


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Last updated on May 11, 2022
Frequently asked questions
Who makes these and where?

Yerhot Audio is located near the Sierra Foothills in Northern California. I, John, make these myself in my shop.

Where do you get materials?

The wood is from my local lumber yard and aluminum from Salt Lake City, UT. Components are from distributors based and shipping from Texas, Minnesota, and Tennessee. I cannot control the actual origin of where those distributors get them, but they're all reputable and distribute genuine parts. Transformers are manufactured either in Carlsbad, NM or Canada. 3D printer filament I source from Sacramento, CA.

Are the amplifiers safe?

I take standard precautions and follow electronics wiring standards. Wiring is heat-shrink wrapped when possible, of appropriate gauge, properly grounded, etc... However,you should never ever open or touch/modify anything inside your amplifier, even if it's been unplugged.

Power supplies incorporates high-voltage draining to ensure that the large power supply capacitors drain their voltage when powered off, lowering the chance of a shock by touching the wrong internal component - but it's still very dangerous.

Like any piece of high-voltage electronics don't open it and don't touch anything inside. No serviceable parts.

The included user guide has more safety, use, and care information.

I hear tube amps are not as good as solid state or other newer tech

The beauty of audio is that what is "good" is subjective. Well implemented tube circuits offer an organic beauty that many find lacking in solid state amplification, especially when paired with specific headphones or speakers. My aim is to provide a world class holistic listening experience.

However, if the aim is to purely measure well, there are many cheaper solid state offerings from other companies that will measure much better.