Flat Stone Amps

New Site Coming Soon!

Nic Patullo
Phone: 218-428-8203
Duluth, MN 55811
Office Hours:
Monday-Friday
9:00am-5:00pm

The history of Flatstone Amplifiers covers a period of about thirty years. In about 1971Walt Gorgoschlitz, owner/builder, purchased a Gibson Super Medalist Amplifier with 7591 power tubes and C12N Jensen speakers and heard a certain warmth, clarity, and richness in tone that he did not hear again for a few years until a friend lent him a Fender Super Reverb.

Walt Gorgoschlitz, Owner of Flatstone Music

In memory of Jody Morgan, 5 years at Flatstone

During the next thirty years, what would become Flatstone Amplifiers was the accumulation of Walt's training and years of employment in metal fabrication and electronics. At the same time, he operated a 4, then 8, then 16 track recording studio at night and on weekends. Once again, after a long search for the perfect microphone it showed up in the form of a Neumann U-67 vacuum tube mic. It seemed no matter what the application, tubes always sounded much better.

While running the studio. Walt studied electronics and began doing all of his own repairs. He was then asked to set up an electronic repair shop in a music store. Since 1990 he has been doing repairs for as many as six music stores simultaneously, with the bulk of the repairs being vintage vacuum tube guitar amplifiers - mostly Fenders. With nearly 30 years of experience as a machinist, sheet metal fabricator, and welder it only stands to reasaon that he would accumulate the machinery and build his own amplifiers from bare metal and wood - incorporating design improvements to rectify problems he had encountered in his years of repair experience.