Short answer: the Topping D50 III. It ranks #1 of 30 DACs by measured performance, rated 4.9/5, at $229. The Sonnect SoundWire ranks #30, rated 2.4/5, at $165, $64 cheaper, a saving that is not big enough to make up the sound-quality gap.
The Topping D50 III is the better-sounding pick. Audio Science Review measured 123 dB SINAD, so its noise and distortion are transparent. The catch: Bluetooth lacks aptX and AAC, offering only SBC and LDAC.
Why pick the Sonnect SoundWire: It turns a USB-C phone or computer into a source with two transformer isolated XLR line outputs, which suits connecting directly to powered speakers, mixers or PA systems. Watch for: Audio Science Review measured a SINAD of 85 dB, a level of noise and distortion that is an audible weakness.
Buy the Topping D50 III. It is rated higher, and the $64 saving on the Sonnect SoundWire is not enough to make up the difference.
Still deciding? The full Headphone Amps and DACs rankings cover every ranked option.
Specifications Side By Side
| Topping D50 III | Sonnect SoundWire | |
|---|---|---|
| Price | $229.00 | $165.00 |
| Ranked | #1 of 30 in DACs | #30 of 30 in DACs |
| Device Type | DAC | DAC |
| SINAD | 123 dB (measured by Audio Science Review) | 85 dB (measured by Audio Science Review) |
| Balanced Output | Yes (TRS line out) | Yes (XLR line out) |
| Inputs | USB-C, optical, coaxial, Bluetooth | USB-C |
| Outputs | RCA, 6.35 mm TRS balanced | 2 x XLR (transformer-isolated) |
| Bluetooth Codecs | SBC, LDAC | - |
| DAC Chip | 2 x ES9039Q2M | - |
| Volume Control | Digital (joystick, remote) | None (phone/PC volume) |
| Equalizer | Yes (10-band parametric) | - |
| Dimensions | 4.9” x 1” x 5.2” (125 x 26 x 131 mm) | - |
| Weight | - | 0.3 lbs (140 g) |
Related Amp and DAC Comparisons
How Topping D50 III compares with other leading options:
- Topping D50 III vs SMSL D-6S
- Topping D50 III vs SMSL DO200 MKII
- Topping D50 III vs Fosi Audio ZD3
- Topping D50 III vs SMSL D200
- Topping D50 III vs SMSL SU-6
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
Topping D50 III: $229.00 Amazon eBay
Pros: Audio Science Review measured 123 dB SINAD, so its noise and distortion are transparent. It packs USB-C, optical, coaxial and LDAC Bluetooth inputs, a remote controlled volume, 10 band parametric EQ and balanced TRS outputs into a compact chassis for an amp or powered speakers. It matches the rating of the Topping D900 for a small fraction of the price.
Cons: Balanced output uses 6.35 mm TRS jacks rather than XLR, so XLR gear needs adapter cables. Bluetooth lacks aptX and AAC, offering only SBC and LDAC.
Full Topping D50 III review and specifications →
| Released | Mar 2024 (2 years ago) |
|---|---|
| Balanced Output | Yes (TRS line out) |
| Bluetooth Codecs | SBC, LDAC |
| DAC Chip | 2 x ES9039Q2M |
| Device Type | DAC |
| Dimensions | 4.9” x 1” x 5.2” (125 x 26 x 131 mm) |
| Equalizer | Yes (10-band parametric) |
| Inputs | USB-C, optical, coaxial, Bluetooth |
| Outputs | RCA, 6.35 mm TRS balanced |
| SINAD | 123 dB (measured by Audio Science Review) |
| Volume Control | Digital (joystick, remote) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Sonnect SoundWire: $165.00 Sonnect eBay
Pros: It turns a USB-C phone or computer into a source with two transformer isolated XLR line outputs, which suits connecting directly to powered speakers, mixers or PA systems.
Cons: Audio Science Review measured a SINAD of 85 dB, a level of noise and distortion that is an audible weakness. It has no headphone output and no volume control of its own. The Samsung USB-C to 3.5mm Headphone Jack Adapter measures cleaner and rates higher for far less, although it lacks XLR outputs.
Full Sonnect SoundWire review and specifications →
| Balanced Output | Yes (XLR line out) |
|---|---|
| Device Type | DAC |
| Inputs | USB-C |
| Outputs | 2 x XLR (transformer-isolated) |
| SINAD | 85 dB (measured by Audio Science Review) |
| Volume Control | None (phone/PC volume) |
| Weight | 0.3 lbs (140 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons