Audio by Van Alstine (Woodbury, MN): preamplifiers, amplifiers, digital-to-analog converters, and phase inverters, engineered and "hand built" in USA.
Ayre Acoustics, Inc. (Boulder, CO): full line of audio and video components, hand-assembled in Boulder.
Car Audio Factory (Richmond, TX): subwoofer enclosers made in a state of the art factory in Houston.
Carr Amplifiers (Pittsboro, NC): guitar amplifiers, made by guitarists for guitarists.
CI Audio (Port Hueneme, CA): headphone amplifiers, monoblock amplifiers, and power supplies.
Fargen Amps (Sacramento, CA): all tube (not solid-state) guitar and bass amplifiers, handcrafted in USA by Ben Fargen.
Grado Labs (Brooklyn, NY): high-quality headphones and phono cartridges
Henriksen Amplifiers (Denver, CO): amplifiers for jazz guitars and bass guitars. Wood cabinets made in California, speakers made in Kentucky, assembled in Denver.
Magnepan Inc. (White Bear Lake, MN): manufacturing innovative, world class speakers for over 40 years, still "American-made with virtually all American parts."
Manley Labs (Chino, CA): Hi-Fi and professional recording gear, including mixers, preamplifiers, equalizers, limiters, and microphones. (The site links to some cool factory tours)
McIntosh Labs (Binghamton, NY): fine audio and home theater sound systems, still hand-crafted in New York. (Acquired in 2003 by Japanese D&M Holdings, but NY production continues)
Mohu, Inc. (Raleigh, NC): makers of the LeafTM, a USA-made indoor HDTV antenna. I bought one and discovered it worked much better than my "rabbit ears"--great, free TV reception, and I don't have to reposition it when I switch channels. Most of their products are made in USA, but check product descriptions.
Moog Music (Ashville, NC): miniMoog Voyager analog monosynth, MoogerFooger guitar pedals, and Etherwave theremin, made in their NC facility
Ohm Acoustics (Brooklyn, NY): high-end speakers for audio and home theater applications.
On the Road Effects (Seekonk, MA): handcrafted analog guitar effects pedals, "designed with the touring and recording musician in mind."
Orb Audio (Sherman Oaks, CA): Mod1 and Mod2 satellite speakers and soundbars for flat screen and home theater applications, handmade in USA. "Small Speakers for Smart People" (these are so cute!)
Sonoma Wire Works (Los Altos, CA): manufacturer of GuitarJack, high quality audio input/output interface to connect instruments and microphones to your iPhone, iPad and iPod Touch. Made at their factory in San Jose, CA.
Synthesizers.com (Tyler, TX): modular analog music synthesizers, assembled in USA with domestic and imported components.
VPI Industries (Cliffwood, NJ): high-end turntables and tonearms made in USA for 30 years. See dealer locator.
C.F. Martin & Co. (Nazareth, PA): making acoustic guitars in the USA for 175 years, they must be doing something right! (Factory tours too.) (Some product imported.)
Prisma Guitars (San Francisco, CA): making electric guitars, basses and drums from recycled skateboards--these are so cool!
Rickenbacker Guitars (Santa Ana, CA): electric guitars and basses made in USA by a company that have been around since the earliest beginnings of electric musical instruments. Played by some of my favorite rockers, including The Beatles, Pete Townsend, and U2! (Sorry, no factory tours.)
Taylor Guitars (El Cajon, CA): acoustic and electric guitars since 1974 (tours of the Taylor Factory are available). (Note: in addition to the main factory in El Cajon, some Taylor guitars are now made in Mexico at the company's facility in Tecate, Mexico)
Kurt Wilson Guitars (Des Plaines, IL): electric guitars handcrafted in Illinois from beautiful hardwoods.
Jon Kammerer Guitars (Keokuk, IA): custom guitars that are really something...I want one, and I don't even play! (He also crafts spectacular inlaid cabinets.)
Darkwood Music Co. (Punta Gorda, FL): fiddles and basses for bluegrass, country and folk musicians, handcrafted in USA
Deering Banjo Co.(Spring Valley, CA): a full line of American-made banjos, including production and custom models
Kanile`a `Ukulele (Kaneohe, HI): handcrafted ukuleles, with a native Hawaiian tree planted for each ukulele built.
KoAloha (Honolulu, HI): handcrafted ukuleles, Koa and Mango series are made in their factory in the Kaka`ako neighborhood of Honolulu.
Steinway & Sons (Long Island City, NY): Steinway grand and upright pianos for the American market are made in NY, with production in a German facility supplying Europe and Asia. (Boston and Essex pianos are made in Asia.)
Noble & Cooley (Granville, MA): professional level snare drums and drum kits, from a company that has been making drums since before the Civil War. Still owned and operated by descendants of founder James P. Cooley. Use their dealer locator, or they have the option of doing factory purchase and tour.
Pintech Percussion (Theodore, AL): electronic percussion instruments made in Vancouver, WA. (I'll post them in honor of Linkin Park!)
Vic Firth (Norwell, MA): drumsticks and mallets of hickory and maple wood, made in Maine. They do the entire process, from kiln-drying the wood to machining and grinding to finishing. The company merged with Zildjian in 2010.
Zildjian (Norwell, MA): family-owned maker of cast and sheet bronze cymbals for drumsets, band, and orchestral use. The company notes their origins in Istanbul in 1623, but three generations of Zildjians have been making cymbals in the U.S. The company has been at their Norwell location since 1972. Factory tours the third Thursday of each month, with advanced reservations required.
Burkart Flutes and Piccolos (Shirley, MA): incredible flutes of gold, sterling silver, and platinum, plus piccolos, handcrafted by musician artisans.
Conn-Selmer: this subsidiary of Steinway Musical Instruments (SMI) manufactures their "best grade" woodwind and brass instruments at facilities in Elkhart, IN and Eastlake, OH. ("Good" and "better" student instruments imported.)
E.K. Blessing, formerly of Elkhart, IN, lives on in name only (the brand belongs to St. Louis Music), and no longer makes brass instruments in USA.
Flutewalker Musical Arts (Montpelier, VT): hand-carved wood flutes in the Native American style by performer, recording artist and flute builder Werner John
Powell Flutes (Maynard, MA): handmade Custom, Conservatory and Signature flutes made of sterling silver, gold, platinum and grenadilla wood. In the Boston area since 1927. Powell was purchased by the French company Buffet Crampon in 2016 but is still producing flutes in Massachusetts.