The xDuoo MD-01 is a tube desktop DAC/amp with a USB DAC input, Bluetooth 5.4, MQA support, a 6.35mm headphone output and a dedicated IEM output. It's built for desks where IEMs and over-ear headphones take turns, giving sensitive in-ears their own matched jack.
Who the xDuoo MD-01 is for
IEM and over-ear rotators: Sensitive in-ears get their own matched jack instead of sharing the 6.35mm output with full-size headphones, which saves a lot of volume-knob caution.
USB and Bluetooth sources: A USB DAC input with MQA support sits alongside Bluetooth 5.4, so wired and wireless sources share one unit.
Tube-curious desk listeners: It's a tube desktop decoder, so the tube stage arrives with the DAC rather than as a separate box.
xDuoo MD-01 key specs
Bluetooth: 5.4
Headphone output: 6.35mm
IEM output: Dedicated jack
Inputs: USB DAC, Bluetooth
MQA: Supported
Amplification: Tube
Color: Blue
Genuine stock, 1-year warranty. Free shipping on every order, 45-day returns.
xDuoo MD-01 vs similar options
vs FiiO K13 R2R: Also on Bluetooth 5.4, but its headphone jacks are 6.35mm single-ended and 4.4mm balanced, fed by an R2R DAC; pick the MD-01 for a tube stage and a dedicated IEM output.
vs HIFIMAN EF400: USB-only, so no Bluetooth, but rated up to 4.4 W per channel balanced with four headphone jacks including 4.4mm and 4-pin XLR; pick the MD-01 for Bluetooth 5.4 and a tube stage.
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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