Colorado-Based Manufacturers

50 years ago most audio manufacturers worked out of Long Island City ,N.Y. NEW YORK ,NEW YORK.....

Isn’t Durand, the tonearm manufacturer, also in Colorado?

Joel is out of Seattle. I helped him with the launch of the Talea back in 2010/2011, so that might be the source of confusion about a Colorado connection.

... Thom @ Galibier Design

Lol, why the list?

Avalon in the OP and the link above!

I can't believe no one mentioned the Avalon Speakers...

Isn't Durand, the tonearm manufacturer, also in Colorado?

Pro stuff based in Lyons, north of Longmont/Boulder.

Another one missing from Americanmadeaudio.com is Grace Audio

Starbuds. 12 locations. 😳

Boulder. Duh!

@itsleebs, etc.  Thanks folks. As for why, it's time for a career change and trying to investigate companies I might be interested in working for. 

Galibier Design turntables are made by Thom Mackris near Boulder.
Grand Prix turntables and racks are made in Durango by Alvin Lloyd and crew.
Westone IEMs are made in Colorado Springs, as are Jeff Rowland's products.

Cal3713, what's up with this? Just idle curiosity, or---?

Bill Leebens, Director of Communications, PS Audio

MG Audio design

I believe Jeff Rowland is Colorado based.

Audio Magic cables and YG Acoustics are all I can think of. But jetter nailed the biggest seller👍And oldest company and probably the Best audio tweek. Of course it goes with other enhancements available In Colorado 

Sanders is in Conifer

PranaFidelity is in Denver.  

Zenwave Audio

 Green Mountain Audio, Colorado Springs, is not on the list Yogyboy provided..

Coors

Here ya go!
 http://americanmadeaudio.com/product-tag/colorado/