COPPER

A PS Audio Publication

Issue 17 • Free Online Magazine

Issue 17 MY TURN

Boulder Amplifiers

Boulder Amplifiers

Somewhere back in the last century, from around 1976 to 1983, a California company called Pacific Recorders & Engineering (PR&E) designed and built tape cartridge machines for radio stations. One PR&E model, the Tomcat (an acronym for Theory Optimized Microprocessor Controlled Audio Transport, if you can believe that), was said to be more durable and have better  S/N and better sound quality than anything else on the market. Cart machines were used for easy playback of commercial spots, as well as for music.

PR&E branched out into amplifiers, microphone preamps and mixing boards for broadcast and recording applications, and their reputation for high performance and durability spread. Occasionally, audiophiles would stumble upon a PR&E amp, and again, the company’s reputation spread.

As have zillions of Californians before him and since, company head Jeff Nelson relocated to Colorado in 1984. The company was housed in an old farmhouse in Superior, south of Boulder, Colorado, and the company was renamed Boulder Amplifiers.

Soon thereafter, the company’s focus shifted from pro gear to high-performance consumer products. A pro-model amp, the 500, featured the standard pro-style indicators and controls on its front panel. The 500 AE–”Audiophile Edition”—deleted the gewgaws and had only a power switch.

For over 30 years now, Boulder  has designed and built indestructible amps, preamps, and other components. Products feature impressive, heavily-machined casework that is all done in-house, a rarity these days. The impression given by their products is a sense of being built for maximum performance and durability with cost no object.

The company’s new, purpose-built  23,000 square foot facility in Louisville, Colorado will allow the company to pursue even bigger/better/badder projects. It’ll be interesting to see what they come up with!

Special thanks to Rich Maez for the tour.

IMG_9470
Boulder Amplifier's new facilities
IMG_9471
CNC milling machines used to build Boulder Amplifier chassis
IMG_9476
Rich Maez, Director of Sales and Marketing, shows some finished metalwork
IMG_9478
Finished amplifier heat sinks
IMG_9482
The oversized bead-blast chamber where metalwork receives a satin finish
IMG_9486
Assembly area
IMG_9489
Massive 3060 amp on the engine stand used for moving the largest models
IMG_9490
Inside the 3060
IMG_9493
Other amplifiers awaiting final assembly and test
IMG_9495
Auto insertion pick and place component machine for PCB assembly
IMG_9496
Wave solder machine to solder PC boards

More from Issue 17

View All Articles in Issue 17

Search Copper Magazine

#230 Camaraderie by B. Jan Montana May 04, 2026 #230 AXPONA 2026: A Family Gathering by Paul McGowan May 04, 2026 #230 Pianist Ryan Benthall Explores Jazz Realms and Far Beyond With Divine Sky by Frank Doris May 04, 2026 #230 The Vinyl Beat in AXPONA-Land by Rudy Radelic May 04, 2026 #230 Teddy Thompson’s Musical Growth Deepens With Never Be the Same by Ray Chelstowski May 04, 2026 #230 More Fun in the Sun: Florida Audio Expo, Part Two by Frank Doris May 04, 2026 #230 CanJam NYC 2026 Show Report: Heady Sound, Part Two by Frank Doris and Harris Fogel May 04, 2026 #230 Sonic Youth On Murray Street by Wayne Robins May 04, 2026 #230 Graffeo Coffee: A Symphony of Sensory Experience by Joe Caplan May 04, 2026 #230 The Saul Authority: The Story of Hi-Fi Pioneer Saul Marantz by Olivier Meunier-Plante May 04, 2026 #230 How to Play in a Rock Band, 23: Encounters With Famous Musicians, Part Two by Frank Doris May 04, 2026 #230 An Outlier in the Rack: A Vintage BIC Beam Box by The Staff at Just Audio May 04, 2026 #230 PS Audio in the News by PS Audio Staff May 04, 2026 #230 A Cautionary Tale by Rich Isaacs May 04, 2026 #230 Reel-to-Reel Roots, Part 33 (Revised): Ken Kessler Reports On the 2026 (British) AudioJumble by Ken Kessler May 04, 2026 #230 Text Messaging by Frank Doris May 04, 2026 #230 The Audiophile Rat Race by Peter Xeni May 04, 2026 #230 On the Rocks by Rich Isaacs May 04, 2026 #229 The Earliest Stars of Country Music, Part Three by Jeff Weiner Apr 06, 2026 #229 The Healing Power of Music and Sound at the Omega Institute by Joe Caplan Apr 06, 2026 #229 CanJam NYC 2026 Show Report: Heady Sound, Part One by Frank Doris Apr 06, 2026 #229 Florida Audio Expo 2026: Warming Up to High-End Audio, Part One by Frank Doris Apr 06, 2026 #229 Quick Takes: Anne Bisson, Sam Morrison, The Velvet Underground, and the Stooges by Frank Doris Apr 06, 2026 #229 The Vinyl Beat: New Arrivals, and Old Audio Show Demo Scores to Settle by Rudy Radelic Apr 06, 2026 #229 Harvard Gets a High-End Audio Education by Frank Doris Apr 06, 2026 #229 No Country for Old Knees by B. Jan Montana Apr 06, 2026 #229 How To Play in A Rock Band, 22: Encounters With Famous Musicians, Part 1 by Frank Doris Apr 06, 2026 #229 The Soulful Grooves of Guinea-Bissau by Steve Kindig Apr 06, 2026 #229 Four-Hand Piano Performance at Its Finest by Stephan Haberthür Apr 06, 2026 #229 The People Who Make Audio Happen: Supreme Acoustics Systems’ Las Vegas Grand Opening by Harris Fogel Apr 06, 2026 #229 Blue Öyster Cult: Tyranny and Expectations by Wayne Robins Apr 06, 2026 #229 Guitarist Rick Vito’s Cinematic New Album, Slidemaster by Ray Chelstowski Apr 06, 2026 #229 Measurements and Observational Listening by Paul McGowan Apr 06, 2026 #229 PS Audio in the News by PS Audio Staff Apr 06, 2026 #229 Back to My Reel-to-Reel Roots, Part 28: The Cassette Strikes Back by Ken Kessler Apr 06, 2026 #229 Are You Receiving Me? by Frank Doris Apr 06, 2026 #229 Hospitality by Peter Xeni Apr 06, 2026 #229 Cantina Gateway by James Schrimpf Apr 06, 2026 #228 Serita’s Black Rose Duo Shakes Your Soul With a Blend of Funk, Rock, Blues and a Whole Lot More by Frank Doris Mar 02, 2026 #228 Vinyl, A Love Story by Wayne Robins Mar 02, 2026 #228 Thrill Seeker by B. Jan Montana Mar 02, 2026 #228 The Vinyl Beat: Donald Byrd, Bill Evans, Wes Montgomery, Eddie Palmieri and Frank Sinatra by Rudy Radelic Mar 02, 2026 #228 Listening to Prestige: The History of a Vitally Important Jazz Record Label by Frank Doris Mar 02, 2026 #228 How to Play in a Rock Band, 21: Touring With James Lee Stanley by Frank Doris Mar 02, 2026 #228 The NAMM 2026 Show: The Music Industry’s Premier Event by John Volanski Mar 02, 2026 #228 The Earliest Stars of Country Music, Part Two by Jeff Weiner Mar 02, 2026 #228 From The Audiophile's Guide: A Brief History of Stereophonic Sound by Paul McGowan Mar 02, 2026

Boulder Amplifiers

Boulder Amplifiers

Somewhere back in the last century, from around 1976 to 1983, a California company called Pacific Recorders & Engineering (PR&E) designed and built tape cartridge machines for radio stations. One PR&E model, the Tomcat (an acronym for Theory Optimized Microprocessor Controlled Audio Transport, if you can believe that), was said to be more durable and have better  S/N and better sound quality than anything else on the market. Cart machines were used for easy playback of commercial spots, as well as for music.

PR&E branched out into amplifiers, microphone preamps and mixing boards for broadcast and recording applications, and their reputation for high performance and durability spread. Occasionally, audiophiles would stumble upon a PR&E amp, and again, the company’s reputation spread.

As have zillions of Californians before him and since, company head Jeff Nelson relocated to Colorado in 1984. The company was housed in an old farmhouse in Superior, south of Boulder, Colorado, and the company was renamed Boulder Amplifiers.

Soon thereafter, the company’s focus shifted from pro gear to high-performance consumer products. A pro-model amp, the 500, featured the standard pro-style indicators and controls on its front panel. The 500 AE–”Audiophile Edition”—deleted the gewgaws and had only a power switch.

For over 30 years now, Boulder  has designed and built indestructible amps, preamps, and other components. Products feature impressive, heavily-machined casework that is all done in-house, a rarity these days. The impression given by their products is a sense of being built for maximum performance and durability with cost no object.

The company’s new, purpose-built  23,000 square foot facility in Louisville, Colorado will allow the company to pursue even bigger/better/badder projects. It’ll be interesting to see what they come up with!

Special thanks to Rich Maez for the tour.

IMG_9470
Boulder Amplifier's new facilities
IMG_9471
CNC milling machines used to build Boulder Amplifier chassis
IMG_9476
Rich Maez, Director of Sales and Marketing, shows some finished metalwork
IMG_9478
Finished amplifier heat sinks
IMG_9482
The oversized bead-blast chamber where metalwork receives a satin finish
IMG_9486
Assembly area
IMG_9489
Massive 3060 amp on the engine stand used for moving the largest models
IMG_9490
Inside the 3060
IMG_9493
Other amplifiers awaiting final assembly and test
IMG_9495
Auto insertion pick and place component machine for PCB assembly
IMG_9496
Wave solder machine to solder PC boards

0 comments

Leave a comment

0 Comments

Your avatar

Loading comments...

🗑️ Delete Comment

Enter moderator password to delete this comment:

✏️ Edit Comment

Enter your email to verify ownership: