“I love listening in this box… I’m hearing detail and feeling space around instruments which I usually only get in speakers.”

“… have been giving it a spin‎ monitoring mixes through it. I love it. It punches up every pair of headphones I own!”

“…the Crimson is my new favorite‎…it is by far the most efficient and linear at all volumes. The clarity in the low end is far superior to the others. It’s not hyped as far as EQ goes but the bottom punches in an impressive way the others don’t at any level.‎”

Todd WhitelockGrammy Award Winning Engineer - (Josh Groban, Yanni, Harry Connick, Jr., Taj Mahal, Lou Reed, Oscar Petersen)

“A great compliment to our monitoring system. We put the HPA100 in the back of the room for additional client reference, and they love it!”
“Solid build, it’s great to have +4 and -10 input, (two sources, switchable), nice and clear, and it’ll go louder than I want to listen to it!”

Eric ConnGrammy Nominated Mastering Engineer - (Garth Brooks, Mark Knopfler, Joan Osborne, Janis Ian, John Prine, George Strait, Trisha Yearwood, Willie Nelson, Allison Moorer, JJ Cale, John Wait, Ted Nugent, Tony Joe White)

“The Crimson Audio Headphone Amplifier produces a transparent and natural sound which can be experienced in a variety of listening environments from the exacting demands of a recording studio to enjoying audiophile­-type quality at home”

Steven EpsteinGrammy Award Winning Producer - (Billy Joel, Joshua Bell, James Taylor, Wynton Marsalis, Chick Corea, Yo-Yo Ma)

“The Crimson Audio Headphone Amp is a big improvement over my current headphone situation. Anyone doing critical work using headphones will appreciate the punch, clarity, and headroom of the Crimson amp. I am a fan of amps that deliver big, clean power with a fast transient response and that is what I heard in the Crimson Audio. This will be a great addition to any mix, overdub, or editing system.”

Todd RobbinsRecording/Mix Engineer - (The Wood Brothers, Emmylou Harris, John Scofield, The Civil Wars, Michael W. Smith, Ginny Owens, Trisha Yearwood, Little Big Town, Andrew Peterson, Cece Winans, Sara Groves)

“I’m really really liking the HPA. I have to say, the amount of detail it allows me to hear in the songs is incredible. I went through my reference playlists and I loved that no matter where I set the level, the music I was listening too was balanced, and as I increased or lowered the gain on the volume knob, it was completely linear.”

“The build quality is another part that really had me excited about this piece. It looks, and and more importantly feels incredibly sturdy.”
“Overall I’m really impressed with this piece. It checks all of my boxes and if someone asked me for a recommendation on a reference headphone amp, the HPA100 is what I would tell them to check out. The price point for the build quality is a no-brainer!”

Chongor GonczCorner Office host on Pensado’s Place

HPA100 Reference Headphone Amplifier

The Crimson HPA100 Reference Headphone Amplifier remains true to the Crimson mission of providing high quality, simple designs with superior sonic clarity. The HPA100 delivers on that mission with exceptional clarity, stunning stereo imaging, excellent noise performance, and plenty of gain and punch. Most pieces of audio gear include a headphone output of some sort, but many of them are a mere afterthought in the design process. The HPA100 is designed for critical headphone monitoring situations – when you need to know that what you are hearing in your phones is not compromised by a shortcut in design. Built around top-quality time-tested components, and enclosed in a quality-designed all-metal space-saving enclosure, the HPA100 is certain to become a valued and trusted addition to your studio or audiophile listening setup.

      • Balanced stereo inputs on combo XLR – TRS connectors
      • Unbalanced stereo inputs on RCA phono jacks
      • Frequency response 10Hz – 80KHz +2.1/-0.04dB (0dBu input, 24 Ohms)
      • THD+N 0.01%, (+10dBu output, 1KHz, A-weighted)
      • Noise -97dB (+10dBu output, 1KHz, A-weighted)
      • Max input signal +21dBU (1KHz, 24 Ohms, balanced input)
      • Max output signal 9.35W (1KHz, 24 Ohms)
      • 5.10″W x 1.68″H x 5.28″D, 2 lb

Crimson Audio HPA100 Reference Headphone Amplifier User’s Guide