Amp Repair, Fender
Fender Musical Instruments Corporation (FMIC) is the world’s leading guitar manufacturer, and its name has become synonymous with all things rock ‘n’ roll. Fender manufacturers a huge line of guitar amps, bass amps, keyboard amps, and PA systems and also owns SWR, EVH, and many other guitar brands. Our service technician is "Gold" Certified by Fender. ADK Hifi offers Fender amp repair, California amplifier repair,San Francisco amp repair, SF Bay Area amplifier repair, tube amp repair, and Norcal amp repair for Fender amps.

Audio Repair, Loud Technologies Inc.
LOUD Technologies Inc. is one of the world’s largest dedicated pro audio and music products companies. As the corporate parent for world-recognized brands including Alvarez, Ampeg, Crate, EAW, Knilling, Mackie, SIA and TAPCO, LOUD Technologies Inc. produces a wide range of digital recording products, loudspeakers, commercial audio systems, audio and music software, guitars, guitar and bass amplifiers, and orchestral string instruments. ADK Hifi offers Crate amp repair, Ampeg amp repair, California amp repair,San Francisco amplifier repair, SF Bay Area amp repair, tube amp repair, and amp repair for Crate amps and Ampeg amps.

Audio Repair, Korg U.S.A.
Korg manufacturers pianos, tuners, metronomes, dance and DJ tools, processors, mixers, digital recording equipment, and software. Korg owns Marshall and Vox. ADK Hifi offers Marshall amp repair, Vox amp repair, Northern California guitar amp repair,San Francisco guitar amp repair, SF Bay Area guitar amp repair, tube guitar amp repair, and expert amp repair for Marshall amps and Vox amps.

Audio Repair, Yamaha
Since 1887, when it began producing reed organs, the Yamaha Corporation in Japan (then Nippon Gakki Co., Ltd.) has grown to become the world's largest manufacturer of a full line of musical instruments, and a leading producer of audio/visual products, home electronics and other computer related products. ADK Hifi offers Yamaha amp repair, guitar amp repair,PA amp repair, yamaha amplifier repair, Yamaha amps, Keyboards, and PA systems.

Amp Repair, Mesa Boogie
Randall Smith has an ear for tone, a passion for tube technology, a vision for building high performance amps and an unwavering devotion to redefining what we think of as amplified guitar. At Mesa/Boogie, they only know one way to do things. They want to build the very best amplifiers as possible. ADK Hifi offers Mesa Boogie amp repair, all tube amp repair, mesa amp repair, boogie amplifier repair, tube amplifier repair, and repair for all Mesa Boogie amps and Mesa Boogie tube amps.

Amp Repair, Peavey
Hartley Peavey founded Peavey Electronics on the principle of providing quality MI products—namely instrument amplifiers and P.A. (public address) systems-at affordable prices, and this principle has spawned an array of guitars, basses, amplifiers and drums for an ever-expanding market that includes all levels of musicians. ADK Hifi offers Peavey amp repair, combo amp repair, 112 amp repair, 2x12 amplifier repair, and repair for Peavey amps.

Audio Repair, Gibson
Today's Gibson electric guitars represent the history as well as the future of the electric guitar. The models whose designs have become classics-the ES-175, ES-335, Flying V, Explorer, Firebird, SGs and Les Pauls-are a testament to Gibson's wide appeal. ADK Hifi offers Gibson amp repair, amp repair in California, amp repair San Francisco, amp repair SF Bay Area, California amp repair, all Gibson amps.

Amp Repair, Kustom Amplication
In the mid 1960’s Bud Ross battled the odds to combine America’s love of music with the passion for high-speed hot rods. Ross experimented with covering speaker cabinets with the same colorful Naugahyde material. Musicians responded enthusiastically! Today Kustom honors its trend setting past by building award-winning amplifiers and P.A. systems. ADK Hifi offers Kustom amp repair, California tube amp repair, amp repair SF Bay Area, amplifier repair in San Francisco, Kustom tube amp repair, and repairs for all Kustom products.

Audio Repair, Line 6
Line 6 set out to meet the needs of today's guitarist by harnessing technology to turn a wide range of great tone into a reality for every guitarist. Line 6 amassed a noteworthy collection of sought-after vintage amps and effects, and started meticulously measuring and analyzing every tonal aspect of the amps, effects and their associated circuitry. ADK Hifi offers Line6 amp repair.

Welcome to ADK HiFi     Like Us On Facebook - Thank You

Our San Francisco Bay Area audio repair shop in Vallejo, California is the preferred audio repair service center for customers throughout Northern California. If you have a guitar amp, bass amp, vintage tube amp, hifi equipment, a/v receivers, powered speakers, keyboards, synthesizers, or any audio product in need of repair, please give us a call!

The store button on the top right of our website takes you to our ADK Hifi Webstore where we are selling used gear online. If you are looking for a cool pedalboard check out the Pedal Jeanie battery powered pedalboards.

We now sell used gear!
Let ADK Hifi help you sell your old gear. Vintage amps, receivers, speakers, effect pedals, guitar and bass amps, and other cool electronics. We will promote the sales on our website in our webstore. So far we have had good success.

We offer to do this for a 1/3 share in the selling price. You set the price and we do the rest. If the equipment needs repair then we will fix it and deduct the repair fee from the sale. Let us know if you need help selling your old gear. Email us at to get more information.

Amp Repair, NHT
Since it was founded in 1986, NHT® continually challenges the notion that the high-end means high-price. NHT takes pride in designing, manufacturing and marketing loudspeaker systems that provide a lifetime of listening pleasure. Its products from past to present speak volumes of NHT’s dedication to sonic excellence. ADK Hifi is the only authorized NHT repair center in the United States.

Vintage Audio Repair, Brands
ADK Hifi is an audio repair service company in Northern California and specializes in vintage audio repair, modifications, and restoration. Our technicians have a passion for vintage tube and solid state audio equipment. Be assured that your audio equipment will be in good hands if you choose to have ADK Hifi service them, as we understand the value and personal sentiment these vinatge products bring to collectors, investors and owners. ADK Hifi offers expert vintage amp repair in San Francisco, the SF Bay Area, and Northern California.

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