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USB DAC 128 mkII from Henry Audio is

High Fidelity Computer Audio
Open Source Hardware

Do you want the best sound quality from your computer? A USB DAC will sound a lot better than the output from the computer's audio plug. Our DAC delivers a surprisingly good sound quality and doesn't cost a fortune. Just see our reviews.

For a great sonic performance, pair the USB DAC 128 mkII with your favorite headphone amplifier or home stereo. The DAC uses high quality RCA outputs and supports asynchronous USB Audio with sample rates up to 192kHz. It works on Mac, Windows and Linux.

The mkII packs more punch and better overall audio quality than its predecessor (Henry Audio USB DAC 128 and QNKTC AB-1.2).

The USB DAC 128 mkII is developed by an online group of enthusiasts and sold by the Norwegian company Henry Audio. It is an Open Source Design. It will sound great just out of the box. But those so inclined are invited to continue developing it and sharing their discoveries.



People are saying great things about our product

Lyd & Bilde gir seks stjerner 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!"

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

"En mycket vettig uppgradering för datamusikentusiasten." har stor sans for USB DAC 128 mkII.

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

Linux Voice has tested the open source USB DAC 128 mkII.

“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.”

Norske Watt har skrevet en flott test om USB DAC 128 mkII.

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

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.”

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.”

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.”

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”

En teknisk artikkel om prosjektet som ligger bak AB-1.2. 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.

“Tett, veldefinert bass, nøytral klangkarakter, veloppløst og detaljert uten tegn til skarphet. Kjapp, dynamisk spillestil.”


The Henry Audio USB DAC 128 mkII is sold with the help of PayPal. The Henry Audio website will not see or store your credit card number. Please order according to your location. Shipping to Europe, the US and Canada is included in the price. Orders to all other destinations (Russia, Asia, South America and Oceania) must select USD 259.00 shipment with tracking. Orders to EU countries are sent from within the EU. Orders to Norway are sent from Norway. If PayPal is inconvenient for you, please use the contact information at the bottom.

Thank you for your purchase!

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

All Windows users are recommended to download and install the driver. High resolution playback uses the included Open Source Windows ASIO driver.

The USB DAC 128 mkII 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.

Design & code by Found.

Photography by Dag Dalvang