Boulder Amplifiers, Inc.

Boulder Amplifiers, Inc. Founded in 1984, Boulder manufactures the world's finest high-performance home audio electronics. We are not a virtual company.

After over 30 years in business, innumerable people know Boulder’s products but very few know the company. Not only are the electronics—widely considered the finest home audio products available in the world—unique amongst their competitors, but the company itself has an origin that is significantly different and more substantial than other players in the high-performance audio industry. Boulder w

as officially incorporated in 1984, though the company’s story goes back well before then, when the principle designers were based in San Diego, California and immersed in the professional recording studio and broadcast industries. Since that time, the company has grown at a measured pace that reflects both diligent management and our dedication to creating the best home entertainment products we’re capable of producing. Throughout our history, one thing has never changed: our unwavering dedication to hand-building the most accurate and reliable audio components in the world. Boulder is not a hobby business or well-funded but technologically hollow startup. We are an organization with a traceable lineage firmly grounded in engineering and technology. Everything is designed and manufactured at our new facility in Louisville, Colorado in the U.S. We’ve attempted, whenever possible, to bring every aspect of the manufacturing process under our roof in order to improve our quality control. We do not outsource design or production. All of our products are the handiwork of multiple engineers, metalworkers, technicians and craftsmen who take great pride in being a part of the last truly high-end audio company in North America that is independent and does everything in-house. While this method of manufacturing may cost a little more, it is the only way we know of to guarantee absolute perfection in performance, reliability and quality. Our founder, Jeff Nelson, is fond of asking, “Doesn’t anyone really care about the customer anymore?” We ask this of ourselves everyday. As long as there are music and film lovers who understand and appreciate what we do, we’ll continue to make the home sound and cinema event an experience unequalled by any other means. This devotion and adherence to our core values has earned us dozens of awards and accolades over the years. Yes, they look nice in our trophy room, but in the end our greatest judge is you, the listener.

We have been having a lot of fun showing off the new 800 series on the 3rd floor of the Vienna High End Show. But we did...
06/05/2026

We have been having a lot of fun showing off the new 800 series on the 3rd floor of the Vienna High End Show. But we didn’t forget to bring the big stuff too. Check out the Boulder 2160 and 2110 with the new Ymir in H X2, C03/D02 on floor -2!

The 851 monos are the newest amplifiers from Boulder. Delivering peaks of 150 watts per channel into 8 ohms. It is also ...
06/01/2026

The 851 monos are the newest amplifiers from Boulder. Delivering peaks of 150 watts per channel into 8 ohms. It is also doing it in pure class A using the Smart Current designs we developed in the new Boulder 1100 series amplifiers. There is a lot of performance and punch in this compact chassis that we think will surprise most. As you can see, we couldn’t add more to this box if we wanted!

Be the first to hear the 851s as we debut the 851 monos on a pair of YG Hailey’s in Room 3.83 at Vienna. No worries if you cannot make the show, these amps will start shipping to your local Boulder partners as soon as next week. If you don’t know where your closest Boulder partner is, please reach out to us through Boulderamp.com or our email [email protected].

Happy listening.

The 808 is the newest phono stage in Boulder’s lineup. The 808 takes lessons and experience learned from 40 years of des...
05/29/2026

The 808 is the newest phono stage in Boulder’s lineup. The 808 takes lessons and experience learned from 40 years of designing phono stages and puts them in a compact chassis that matches the look and multifaceted perks of the rest of the 800 series products. Sharing some of the design philosophy of the 2 phono preamplifiers in the higher line-ups, it improves on the 508 in terms of listening and functionality. Rethinking shielding, ground schemes, and signal path, resulting in an improved sonic performance. It is also more flexible in use by allowing for cartridge loading with a set of ‘Personality Cards’, a mono switch, and a low-cut filter switch.

We are excited to have the world premiere of the 808 at High End Vienna. It will be paired with a Innovation Compact turntable, Boulder 812 DAC preamplifier, and the new Boulder 851 Monos powering Hailey’s.

Better yet, we are excited to have Jason Ford doing an hour presentation each day in our room. He will be showing an incredibly rare selection of pressings through this system you won’t want to miss.

Come experience the system and some music you won’t hear anywhere else.

Times for Jason’s presentations are:

Thursday the 4th June - 4:00 pm
Friday the 5th June - 3:00 pm
Saturday the 6th June - 3:00 pm
Sunday 7th June - 2:00 pm

All in room 3.83

See you there.

05/28/2026
We are excited to announce 2 new products in the 800 series! We are also excited that we will be showing these at High E...
05/27/2026

We are excited to announce 2 new products in the 800 series! We are also excited that we will be showing these at High End Vienna next week. Visit us in rooms 3.81 and 3.83 to see and hear these for the first time!

-808 Phono Preamplifier- A phono stage in the 800 series, which is a step up from the 508 and allows for customizable cartridge loading, much like the 1108 and 2108. Toggleable mono and low cut switches.

-851 Mono Amplifier- A 100-watt per channel amp utilizing the Smart Current pure Class A that we use in the 1100 series, but in the same size package as the 861 stereo and 812 DAC preamplifier. The most powerful ‘travel-sized’ Boulder created to date. After first listening, many of the employees and engineers wanted a pair for themselves, and we are excited to finally show them off.

Check out Boulderamp.com for the rest of the specs and literature. These will start shipping worldwide right after the Vienna High End show. Looking forward to seeing you there or afterwards at your favorite local retailer.

Happy Listening.

05/26/2026
The 1151 Mono power amplifiers were recently reviewed by Image Hifi in Germany. We are very grateful that this publicati...
05/15/2026

The 1151 Mono power amplifiers were recently reviewed by Image Hifi in Germany. We are very grateful that this publication took the time to listen to our amps and write such a thorough review. It is in German, but if you can translate it, its a wonderful read. A link to the full PDF is in the comments of the original post!

Die coolsten Endstufen der Welt?

Das jedenfalls schreibt Uwe Kirbach in der aktuellen Ausgabe von image hifi über die neuen Boulder Amplifiers 1151 Mono-Endstufen. Und wer den ausführlichen Bericht liest, versteht schnell, weshalb er zu dieser Einschätzung gelangt.
Es geht nicht nur um enorme Leistung oder um spektakuläre Verarbeitung. Sondern um etwas deutlich Schwierigeres: die Verbindung aus Kontrolle, räumlicher Präzision, tonaler Selbstverständlichkeit und musikalischem Fluss. Eigenschaften, die selbst bei sehr teuren Transistorverstärkern nur selten gemeinsam auftreten.
Besonders spannend ist dabei Boulders neue „Smart Current“-Technologie, die laut Jeff Nelson klassische Vorstellungen von Class-A-Verstärkern neu denkt – mit hoher Effizienz, minimaler Wärmeentwicklung und dennoch jener klanglichen Geschlossenheit, die viele bislang eher mit Röhrenkonzepten verbunden haben.
Der komplette Testbericht zeigt sehr schön, weshalb Boulder seit Jahrzehnten eine Sonderstellung im High End einnimmt – technisch ebenso wie klanglich.
Den Link zum vollständigen PDF finden Sie im ersten Kommentar.

We’re honored and deeply grateful to be included in Stereophile Magazine's Recommended Components list for 2026.It means...
04/16/2026

We’re honored and deeply grateful to be included in Stereophile Magazine's Recommended Components list for 2026.

It means a great deal to see our work recognized alongside so many other exceptional products, and we sincerely appreciate the thoughtful evaluation and kind words shared in the article. Hearing reflections like “open, clear as a bell, vital, and alive,” and that our amplifiers bring “a warm, glowing bath of sound” that draws listeners in, is incredibly rewarding for our entire team.

From the engineering behind our Smart Current biasing to the final listening experience, every detail is driven by our passion for music and performance. We’re especially thankful for the acknowledgment of both the sonic character and the measured performance of the 1151 monoblocks.

Thank you for taking the time to listen, measure, and share such a detailed perspective—and for including us among this distinguished group.

https://stereophile.com/content/recommended-components-2026-edition

Every product listed here has been reviewed in Stereophile. Everything on the list, regardless of rating, is genuinely recommendable. Occasionally we get complaints from manufacturers who object to being included in, say, Class B. That's their error: Inclusion in Class B is an honor. Within each cat...

We're all ready for a busy day 2 at ! Come see us with     and  in the connection room under the escalators where we wil...
04/11/2026

We're all ready for a busy day 2 at ! Come see us with and in the connection room under the escalators where we will be exhibiting a full 2100 series system!

Hope to see many of you here!

04/03/2026

Our dealer in Chicago Quintessence Audio Ltd. went on ABC 7 last night to talk a little bit about Axpona, their shop, and what it means to be in and around the Hifi industry! We can't wait to attend and exhibit with them next week! Stop by and see us in the Connection room if you're going to be there!

Address

255 S. Taylor Avenue
Louisville, CO
80027

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+13034498220

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