USB To SPDIF Converter

AC Adapter






STATUS: in stock. Orders placed now ship in 1-3 business days.

“Why would I need a USB to SPDIF converter?” you might ask. Well, maybe you don’t. Maybe you’re already using our Gen 5 USB input. But if you aren’t, this is a great way to convert virtually any computer, tablet, streamer, or phone into a dedicated, high-performance audio source.

Works with Virtually Any Audio USB Source and DAC 
Just connect your USB source to Eitr’s USB input, and connect Eitr’s coaxial SPDIF output to any DAC that accepts coaxial input. Now, you have complete isolation from source to DAC, together with a superb, low-jitter coaxial SPDIF interface for bit depths and sample rates up to 24/192.
USB, Solved: Gen 5 Technology
The Eitr features the same unique Gen 5 USB input technology as in our upgradable DACs. It’s simply the highest-performance USB input available today, with complete electrostatic and electromagnetic isolation (via transformers), self-power of all critical low-noise and rechecking sections, and separate, precision clock sources for both 44.1 and 48kHz multiples. (And if you don’t understand the technobabble, here’s the point: it works great and sounds great, too.)
Linear, Low-Noise Power Supply—Built In
You won't need any "linear supplies" or other "add-ons" to improve Eitr—like all of our stackable products, we've built in a linear supply with multiple stages of ultra-low-noise voltage regulators. From the included 1.5A, 6VAC wall-wart to the output, there are no switching supplies in Eitr.
Made in USA 
By “Made in USA,” we mean Made in USA. Not “we just put in the last screw and said, ‘Assembled in USA.’” The vast majority of the total production cost of Eitr—chassis, boards, assembly, etc—goes to USA companies manufacturing in the USA. 
2-Year Warranty, 15-Day Return
Eitr is covered by a limited warranty that covers parts and labor for 2 years. If you don’t like your Eitr, you can send it back for a refund, minus 15% restocking fee, within 15 days of receiving it.

USB Input: 1 in (Type B) 
USB Mode: USB 2.0 (480Mbps), compatible with USB 3/3.1 ports 
USB Receiver: C-Media CM6631A
USB Isolation: Electromagnetic and electrostatic isolation via high-speed transformers
USB Power: 0mA required from source
Clocks: separate crystal clocks for both 44.1kHz and 48kHz multiples
SPDIF Output: 1 coaxial (RCA) output
Power Supply Type: linear, with precision low-noise voltage regulators
AC Power: 9VA 6VAC wall-wart
Power Consumption: 2.5W typical
Size: 5 x 3.5 x 1.25”
Weight: 1 lb

Why would I need a USB to SPDIF converter? 
You may not need one at all. We’re not saying you are. If you’re already using our Gen 5 USB input, then you probably don’t need Eitr. But if you have a DAC without Gen 5, and you want to use your computer (or tablet, etc) as a high-performance audio source, then you might really like to have a USB to SPDIF converter.

What does this thing do exactly?
It converts USB audio to SPDIF (Sony/Philips Digital Interface Format), which is a dedicated digital audio format, and passes it along to your DAC by way of a coaxial output.
Only a coaxial output? 
What the hell? What if I want optical?
If you want a crappy optical output that has jitter problems like no tomorrow and likely cannot do 24/192 reliably, you’re free to find a different USB to SPDIF converter that offers optical output.
But, freedom of choice and all that!
Yes, and we chose freely to not offer optical, because it’s not the greatest digital interface.
So does this replace the Wyrd?
No. Wyrd is a different product, used if you have noise or USB connection problems on USB inputs before Gen 5. You won’t need it with Eitr, since it’s electromagnetically and electrostatically isolated. Wyrd still solves problems on other DACs, though, so we’re continuing to offer it.
Gimme some technical details, please?
Eitr does three things:
1. It offers electromagnetic and electrostatic isolation from the USB source via a unique transformer-coupling method. This, we’ve found, is superior to optocouplers, which are inherently high-jitter devices.
2. It eliminates any connection between the USB power and ground and system power—Eitr's low-noise and rechecking sections are completely self-powered.
3. It provides much higher quality, independent crystal-based clocks for the USB input and SPDIF output, operating at both 44.1 and 48kHz multiples.
What if I want a super-duper linear power supply to really turn this thing up to 11?
Cool. We've already included it.
No, I mean a really, really expensive linear power supply with all the fancy stuff on it!
Yeah. Gotcha covered. Ultra-low-noise voltage regulation and exotic aluminum organic polymer caps are already built in.
No, I want a power supply I can bend a shelf with! I want something external that is really over the top!
You know there are these things called "cars," and cars typically come with many options. Sometimes you can even double the price of the car by adding options! Maybe you should consider a car. 
Okay. I give up. But are you saying I need to get this thing if I have a DAC without your Gen 5 USB input?
Nope, not at all. Most USB outputs work fine with all of our DACs, no matter they have Gen 5 or not. This is simply another option that offers total isolation from the source.
What the hell is “Eitr,” anyway? 
In Norse mythology, Eitr is a substance that is the origin of all living things. You know, like music. Or something like that. 
You’re really reaching with that connection to audio, you know?
Would you rather we call it “TX-RX-100a” or something meaningless like that? Let us have a little fun. It keeps us sane. Well, relatively.
How do you pronounce “Eitr?” 
Like “eater.” Yep. There you go. Or there we go.