About Us

Family owned, we treat each customer like a part of our family.

Combining Artistry and Technology Since 1967

Don Mills began playing guitar in 1962; through a tube amplifier.  He built his first tube amplifier in 1967, and the rest is history.

Our Story

Don Mills is the owner and builder at Golden Phi Amplification. He built his first amp in 1967, and has been honing his craft ever since. When he isn’t designing and building amps, he can be found playing around Seattle with his band, Durable Goods. He enjoys playing through his Gold Nugget, a 5E3 Tweed Deluxe style amplifier. It goes to 12.



About Golden Phi

The Golden Phi logo, represented by the Greek letter “Phi”, is also known as the golden ratio: 1.0: 0.6: 1.6. This ratio informs everything from speaker cabinet design to biasing. It is the gold standard for design.

The Greek letter Phi can also be seen as the letter O superimposed over the letter I, representing our new location on Orcas Island and our new brand of Orcas Island Amps. The Phi is found everywhere in nature.

Don Mills, Owner/Builder
665 Discovery Way
Eastsound, WA 98245-8506

Contact us to learn about new products and specials.