FAQ & Policies
Who makes these and where?
Yerhot Audio is located near the Sierra Foothills in Northern California. I, John, make these myself in my shop.
Do you really do it all by hand?
Yes, with the exception of components like resistors, capacitors, potentiometers, tubes, sockets, etc... The solid wood skirt, aluminum top sheet, knobs, wiring, 3D printing, etc... is all done done by me from raw materials. I use a drill press, miter saw, drill, orbital sander, and standard hand tools to complete each amplifier. A 3D printer is the only computer-controlled tool.
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.
Why do you have lead times?
My aim is not to produce a mass amount of amplifiers. I want each and every one to be special. That takes significant time and small quantities enables that. However, that also means we do not carry a stock of pre-assembled amplifiers. Each is built to order and, depending on options selected by the client, may require custom components be fabricated by a supplier.
Where do you ship?
We will ship to just anywhere, though keep in mind you may be responsible for duty/VAT fees if outside of the United States.
Are the amplifiers safe?
Yes. I take standard precautions and follow electronics wiring standards. Wiring is heat-shrink wrapped when possible, of appropriate gauge, properly grounded, etc... However, because we are dealing with high-voltage tubes and mains wiring, you should never ever open or touch/modify anything inside your amplifier, even if it's been unplugged. All our 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 :)
See the user guide included with each amplifier for more safety, care, and usage instructions and tips.
What is your return policy?
In general, we do not accept returns unless you receive a defective amplifier. Each amplifier goes through multiple levels of inspection, testing, and prolonged listening prior to being shipped out. However, if you have a problem contact us.
Tubes we do warrant for 30 days. Contact us if they die on your before then and we'll replace them, free of charge. Due to the nature of tubes, you will receive replacement tubes of the same type, but we cannot guarantee the manufacturer or age of the tubes (new old stock or new production) will be the same.
The amplifiers look bulky and large
They are. And heavy. They are meant to be a central piece of your environment worthy of discussion and enjoyment.
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. Our 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.