QULOOS MUB5 R2R Portable DAC/Amp - Mint - Verified by HiFiLoop
The Audiophile's Hook
The QULOOS MUB5 is a pocket-sized R2R portable DAC/amp designed to bring a more natural, tactile “music-first” presentation to phones and laptops. Flagship flavor for less than new—high performance, high value, and a serious step up for everyday listening.
Condition Report (The Truth)
Grade: Mint — collector quality, like new with minimal handling marks.
- No obvious cosmetic defects observed.
- Full original set included.
The device has passed all functional tests.
Sonic Signature & Pairing
R2R lovers chase tone density and realism—and the MUB5 is built around that idea: a smooth, lifelike flow with convincing body and layered space. Whether you run USB from a laptop or go wireless on the move, it’s an easy upgrade for cleaner dynamics and richer texture.
To unleash the full potential of this device, we recommend pairing it with gear from our Headphones Collection.
Technical Highlights (Mobile-Table)
| Brand | QULOOS |
| Model | MUB5 |
| DAC Topology | R2R (ladder-style) |
| Connectivity | Portable USB DAC/Amp + High-definition Bluetooth input |
| Condition | Mint (99% like new) |
What's in the Box
- QULOOS MUB5
- Full original retail set (box + standard accessories as included)
Why Buy Used from HiFiLoop?
- ✅ 14-Day DOA: Full refund/replace if dead on arrival.
- 🔧 180-Day Warranty: Free repair service (buyer pays return shipping).
- 🔬 Lab Tested: I/O, Noise Floor, Channel Balance verified.
- 📦 Free Shipping: On orders over $199.
See full Grading Scale in Footer Condition Guide.
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Condition Report
See details in the description above.
Shipping & Warranty
Processing Time:
Please allow 3-5 business days for order processing. We perform a final rigorous audio test, functional inspection, and deep cleaning to ensure the device is in perfect condition before dispatch.
Shipping Method:
We use reliable International Priority Lines. Tracking numbers are provided once the item is dispatched.
Estimated Delivery:
7-15 business days to most destinations (USA, Europe, etc.).
Warranty & Support:
We stand behind our quality with a 180-Day Warranty.
- 0-14 Days: Full refund or replacement for any functional defects upon arrival.
- 15-180 Days: Free repair service for hardware issues (Buyer is responsible for return shipping costs and any applicable customs duties or taxes).
Tech Specs
Refer to official manufacturer specifications.