Click to view our Accessibility Statement or contact us with accessibility-related questions
xDuoo MU-603 Bluetooth DAC and Tube Pre-Amp

xDuoo MU-603 Bluetooth DAC and Tube Pre-Amp

Where's the price?
To negotiate the best possible price for our customers, we agree to hide prices prior to logging in.
26 requests
Product Description
The xDuoo MU-603 is a Bluetooth preamp and DAC combo that delivers a modern feature set in a handsome desktop package. The preamp side is powered by a single 12AU7 preamp tube to add organic sweetness to your sounds—and because xDuoo has included a cutout in the metal chassis to expose the tube, you’ll always see why your audio sounds so good, too Read More
Want to know something about this product or how to use it?
Ask the community!

Dec 27, 2022
Is the 12AU7 tube soldered to the board, or is it a consumer-replaceable component?
Mar 11, 2023
The tube is in the socket. It is end-user removable in replaceable.

Dec 23, 2022
So basically this will add bluetooth input to an analog stereo receiver? Why would you need two aux outs?
Dec 27, 2022
  • This doesn't just "add Bluetooth input to an analog receiver". You can buy a cheap $15 Bluetooth receiver with an aux out for that. Generally speaking, a DAC takes full advantage of Hi-Fi (high bit-rate [24-bit or even 32-bit], wide-range frequency response) digital audio and converts it to an analog signal for receivers that don't have DAC built-in. I recommend reading up on DAC. These two articles put it in fairly simple terms:
  • I could see two aux outs being useful for any situation where someone needs to run the same audio out to two different inputs. For example:
  • 1 x Stereo Receiver and 1 x Headphone/monitor amp
  • 1 each to two separate powered speakers, etc.

Mar 14, 2023
btmert86You are correct, just Bluetooth with an 10 year old ess dac chip. All Bluetooth receivers have some sort of DAC...the one built into the Bluetooth chip, and an amp for at least line level output. This unit has no other digital inputs so it's essentially an higher quality Bluetooth dongle.