Short answer: the Loxjie D40. It ranks #28 of 43 DAC and headphone amp combos by measured performance, rated 4.0/5, at $209.99; the Qudelix T71 ranks #32, rated 3.8/5, and costs $229, so there is not much of a tradeoff to weigh.
The case for the Loxjie D40: Audio Science Review measured a SINAD of 122 dB, so its noise and distortion are inaudible. The tradeoff: Loxjie doesn’t publish a 32 ohm power figure, and its headphone output is a single 6.35 mm jack with no balanced headphone option.
The case for the Qudelix T71: Audio Science Review measured 110 dB SINAD, clean enough for nearly all listening. The tradeoff: The maker does not publish a 32 ohm power figure, so it is hard to judge how well it drives demanding headphones.
Buy the Loxjie D40. It is rated higher than the Qudelix T71 and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| Loxjie D40 | Qudelix T71 | |
|---|---|---|
| Price | $209.99 | $229.00 |
| Ranked | #28 of 43 in DAC and Headphone Amp Combos | #32 of 43 in DAC and Headphone Amp Combos |
| Device Type | DAC and headphone amp | DAC and headphone amp |
| SINAD | 122 dB (measured by Audio Science Review) | 110 dB (measured by Audio Science Review) |
| Headphone Outputs | 6.35 mm | 3.5 mm, 2.5 mm balanced, 4.4 mm balanced |
| Balanced Output | Yes (XLR line out) | Yes (2.5 mm, 4.4 mm) |
| Inputs | USB, optical, coaxial, I2S, AES, Bluetooth | USB-C |
| Outputs | RCA, XLR | - |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC | - |
| DAC Chip | 2 x ES9068AS | 4 x ES9219C |
| Dimensions | 9.4” x 1.7” x 7.7” (240 x 43 x 195 mm) | 3.3” x 1.6” x 0.6” (84 x 40 x 16 mm) |
| Weight | 2.4 lbs (1,100 g) | 0.2 lbs (75 g) |
| Battery Life | - | 4 to 10 hours |
| Equalizer | - | Yes (20-band parametric/graphic) |
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- Khadas Tone2 Pro vs Loxjie D40
- SMSL D12 vs Loxjie D40
- Fosi Audio K7 vs Loxjie D40
- Loxjie D40 vs Loxjie D30
Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Amps and DACs In Full
Loxjie D40: $209.99 Amazon eBay
Pros: Audio Science Review measured a SINAD of 122 dB, so its noise and distortion are inaudible. It packs USB, optical, coaxial, I2S, AES and Bluetooth inputs with LDAC, aptX HD and AAC, plus RCA and balanced XLR line outputs for powered speakers or a separate amp.
Cons: Loxjie doesn’t publish a 32 ohm power figure, and its headphone output is a single 6.35 mm jack with no balanced headphone option. The SMSL DS20 rates higher for a little less, and at 1.1 kg in a wide chassis it is bulky for a desk.
Full Loxjie D40 review and specifications →
| Balanced Output | Yes (XLR line out) |
|---|---|
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | 2 x ES9068AS |
| Device Type | DAC and headphone amp |
| Dimensions | 9.4” x 1.7” x 7.7” (240 x 43 x 195 mm) |
| Headphone Outputs | 6.35 mm |
| Inputs | USB, optical, coaxial, I2S, AES, Bluetooth |
| Outputs | RCA, XLR |
| SINAD | 122 dB (measured by Audio Science Review) |
| Weight | 2.4 lbs (1,100 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Qudelix T71: $229.00 Qudelix eBay
Pros: Audio Science Review measured 110 dB SINAD, clean enough for nearly all listening. A built in 20 band parametric or graphic equalizer lets you tune your headphones, and it offers 3.5 mm plus 2.5 mm and 4.4 mm balanced outputs. Its battery runs 4 to 10 hours, and it weighs 75 g.
Cons: The maker does not publish a 32 ohm power figure, so it is hard to judge how well it drives demanding headphones. USB-C is the only input. The Loxjie D30 rates higher and measured cleaner for less.
Full Qudelix T71 review and specifications →
| Released | 2023 (3 years ago) |
|---|---|
| Balanced Output | Yes (2.5 mm, 4.4 mm) |
| Battery Life | 4 to 10 hours |
| DAC Chip | 4 x ES9219C |
| Device Type | DAC and headphone amp |
| Dimensions | 3.3” x 1.6” x 0.6” (84 x 40 x 16 mm) |
| Equalizer | Yes (20-band parametric/graphic) |
| Headphone Outputs | 3.5 mm, 2.5 mm balanced, 4.4 mm balanced |
| Inputs | USB-C |
| SINAD | 110 dB (measured by Audio Science Review) |
| Weight | 0.2 lbs (75 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons