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Henry Audio makes digital music come alive

Imagine hearing the wealth of music at Spotify, Tidal and others on your stereo system. Imagine hearing it with a feeling, clarity and punch that you never thought possible. As music lovers and electrical engineers, this is what we do at Henry Audio.

The USB DAC 128 Mk 3 connects any computer or smart phone to your amplifier, transforming them into true Hi-Fi audio sources. The DAC sits at the most critical part of the signal chain, where the music first becomes analog.

So regardless of your digital source or streaming service, you get the best possible music signal from it. The difference in sound quality is truly amazing. You have to hear it for yourself. But, don’t take our word for it, read the reviews below to see what the experts say.

For just $299 the USB DAC 128 Mk 3 will put tons of musical joy into your home. It is engineered by music lovers in Norway and made in Germany from top-quality parts. Its schematics and code are Open Source.


The press on the mkII:

(psst: the Mk 3 sounds even better!)

Forbes recommend Henry Audio for Hi-Res music. Read the whole report.

"If you keep your music collection on your Mac or PC this is the best value upgrade you can buy to bridge the gap between your computer and audio system."

HiFi Plus calls Henry Audio USB DAC 128 mkII a bargain! Read the whole test.

"I never thought I’d use the B-word in audio, but this really is a bargain!"

Among all the DACs on the market, high end magazine Mono and Stereo gives their "Best Buy Award" to Henry Audio!

"Henry Audio USB DAC 128 mkII manages to offer a heck of a lot for the money"

6moons have written a very extensive review and interview. They like it a lot, to say the least:

"Massive dynamic swings presented no challenge and carried on with lusty enthusiasm."

Linux Voice write about Linux and open source. They have tested Henry Audio USB DAC 128 mkII. 5/5 stars.

"It may seem like a luxury, but if you listen to anything other than MP3 and you’ve got a decent amplifier, it’s definitely worth the investment."

Inearspace have written a comprihensive test of the USB DAC 128 mkII.

"When bass is called upon it was big, powerful too. Not in an overly warm signature strangely enough, it just had big bass. It was imposing; I knew the Henry had arrived."

HiFi Critic is the most conservative and thorough publication in the industry. I'm very proud they recommend the USB DAC 128 mkII. The best part is that Chris Bryant even used it for a little bit of DIY.

"Conceptually interesting, Henry Audio’s USB DAC 128 mkII is also one of the best USB DACs I’ve tried."

The USB DAC 128 mkII is tested against its predecessor by Dan Worth of Hifi Pig.

"Recommended for - portability, good sound quality with finesse, strong bottom end and ability to explore many genres very well."

Paul Rigby - The Audiophile Man - gives the USB DAC 128 mkII a super-rare "Deeply Groovy" award and 9/10 points.

"It is a groundbreaking design because of a combination of factors. Firstly, and most importantly, for its sound quality over a number of resolutions and how it compares with my reference."

Jason Kennedy of The Ear has tested the USB DAC 128 mkII against the AudioQuest Dragonfly. Read on for details.

"If sound quality is what you are interested in this converter is more than worthy of your attention. If you are interested in tweaking it’s in a league of its own"

Lyd & Bilde gir 6 stjerner av 6 mulige og full pott til Henry Audio USB DAC 128 mkII:

"Drømmelyd fra PC-en"
"En rimelig digitalkonverter som virkelig graver gullyden ut av PC-en!"

Norwegian Fidelity magazine gives a top-notch recommendation of Henry Audio!

"Et ekte røverkjøp"
"Lyden her – gjennom Henry Audio – er av meget høy karat."

Dagens Næringsliv er Norges tredje største avis. DN skriver om Henry Audio og utviklingen i norsk HiFi-bransje.

"Det svinger i norsk hi-fi."

Audio in Germany recomends the Henry Audio USB DAC 128 mkII.


Fidelity in Germany has tested Henry Audio and made close friends with it. (English translation available.)

"Henry rockt! Und Henry hat den Blues! Oh Yeah!"

German net magazine HiFi Statement is very positive to Henry Audio and describe the USB DAC 128 mkII as a Hi-End product.

"Bass und Hochtonauflösung lassen ihn durchaus in vierstelligen Regionen wildern." har stor sans for USB DAC 128 mkII. 6/6 poeng.

"Saftig og stram bass, masse detaljer, oppløst topp og fjellstøtt stereobilde. Her var det mye å glede seg over og lite å klage på."

TEK.NO har testet Henry Audio i et rimelig oppsett og liker det de hører. 9/10 poeng.

"En knallgod løsning for deg som er misfornøyd med PC-lyden."

Norske Stereo+ har skrevet en flott test om USB DAC 128 mkII. 5/5 stjerner.

"Den opprinnelige usb-dacen til Børge Strand-Bergesen i Henry Audio var en liten perle. Den nye er mye, mye bedre."

En teknisk artikkel om prosjektet som ligger bak Henry Audio. Det er også et bilde fra lab’en og en god forklaring på asynkron USB. Bildet viser et reelt debug-signal fra firmware i DAC’ens prosessor.

M3 Sveriges Prylsajt har testad DAC:en:

"Test: Henry Audio USB DAC 128 mkII – en dosa som ger dig detaljrikt ljud i hög kvalitet"

Hifi & Musik har gjort ett grupptest av DAC:ar. Om Henry Audio USB DAC 128 mkII säger de:

"En mycket vettig uppgradering för datamusikentusiasten."

A great review in Finland's HiFimaailma, 5 stars of 5 possible! Test results make sense in all languages!

"+Läpinäkyvä ja vaivattoman erotteleva ääni.
 +Hyvät mittaustulokset"


The Henry Audio USB DAC 128 Mk 3 is sold with the help of PayPal. We do not see or store your credit card number. Contact us if PayPal is inconvenient for you.

The price in North America is $299 , including shipping and sales tax. For orders outside Europe and North America please use the $329 shipment with tracking. Orders to the EU are sent from the EU with free shipping and no fees. Orders to Norway are sent from Norway with free shipping and no fees.

North America



With tracking


The Fact Sheet has a user manual and all the technical details about the USB DAC 128 Mk 3. It even includes the Open Source schematics for the complete design.

All Windows users are recommended to use updated Windows 10, not the ASIO driver. Legacy Windows 7 and 8 use the ASIO driver for hi-res playback.

The USB DAC 128 Mk 3 is out there in the open! This page will give you a lot more information on web communities and the Open Source development of the DAC.

It is important that you feel safe whenever you decide to purchase a Henry Audio product. Please use this link to read about all Terms & Conditions, Return & Refund, and Privacy & Shipping.

USB DAC 128 Mk 3 rear

Design & code by Found.

Photography by Dag Dalvang