Short answer: the Fosi Audio DS3. It ranks #4 of 14 usb-c dongle DACs by measured performance, rated 4.3/5, at $99.99. The Fosi Audio DS2 ranks #7, rated 4.1/5, at $59.99, $40 cheaper, which does not close the gap in measured performance.
The case for the Fosi Audio DS3: Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. The tradeoff: Its rated 220 mW into 32 ohms drives most headphones but leaves less headroom than the FiiO KA15, which costs the same and rates higher.
The case for the Fosi Audio DS2: Audio Science Review measured 117 dB SINAD, so its noise and distortion are transparent. The catch: A rated 170 mW into 32 ohms, and only from the balanced output, drives most headphones but leaves little headroom for planar magnetics.
Buy the Fosi Audio DS3. It is rated higher, and saving $40 with the Fosi Audio DS2 does not make up for the sound-quality gap.
Still deciding? The full Headphone Amps and DACs rankings cover every ranked option.
Specifications Side By Side
| Fosi Audio DS3 | Fosi Audio DS2 | |
|---|---|---|
| Price | $99.99 | $59.99 |
| Ranked | #4 of 14 in USB-C Dongle DACs | #7 of 14 in USB-C Dongle DACs |
| Device Type | USB-C dongle | USB-C dongle |
| SINAD | 116 dB (measured by Audio Science Review) | 117 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 220 mW (manufacturer rated) | 170 mW (manufacturer rated, balanced) |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced | 3.5 mm, 4.4 mm balanced |
| Balanced Output | Yes (4.4 mm) | Yes (4.4 mm) |
| Inputs | USB-C | USB-C |
| DAC Chip | ES9039Q2M | 2 x CS43131 |
| Volume Control | Digital (buttons) | Digital (buttons) |
| Equalizer | Yes (32-band parametric) | - |
| Dimensions | 2.2” x 0.8” x 0.4” (55 x 20 x 11 mm) | - |
| Weight | 0 lbs (16 g) | 0.2 lbs (91 g) |
Related Amp and DAC Comparisons
More top alternatives to Fosi Audio DS3:
- FiiO KA15 vs Fosi Audio DS3
- E1DA 9039S vs Fosi Audio DS3
- TRN Black Pearl vs Fosi Audio DS3
- Fosi Audio DS3 vs TANCHJIM Space
- Fosi Audio DS3 vs TempoTec Sonata BHD Pro
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
Fosi Audio DS3: $99.99 Amazon eBay
Pros: Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. A 32-band parametric EQ gives unusually fine tuning control for a dongle, and it offers both 3.5 mm and 4.4 mm balanced outputs. At 16 g and 55 mm long, it is very light to carry.
Cons: Its rated 220 mW into 32 ohms drives most headphones but leaves less headroom than the FiiO KA15, which costs the same and rates higher. The TRN Black Pearl also rates higher and measures slightly cleaner for much less. Volume is button controlled.
Full Fosi Audio DS3 review and specifications →
| Released | Nov 2025 (11 months ago) |
|---|---|
| Balanced Output | Yes (4.4 mm) |
| DAC Chip | ES9039Q2M |
| Device Type | USB-C dongle |
| Dimensions | 2.2” x 0.8” x 0.4” (55 x 20 x 11 mm) |
| Equalizer | Yes (32-band parametric) |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced |
| Inputs | USB-C |
| Output Power (32 ohms) | 220 mW (manufacturer rated) |
| SINAD | 116 dB (measured by Audio Science Review) |
| Volume Control | Digital (buttons) |
| Weight | 0 lbs (16 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Fosi Audio DS2: $59.99 Amazon eBay
Pros: Audio Science Review measured 117 dB SINAD, so its noise and distortion are transparent. It offers both a 3.5 mm jack and a 4.4 mm balanced output, with physical volume buttons, from a USB-C dongle. It rates higher than the FiiO KA11 and JCALLY JM20MAX.
Cons: A rated 170 mW into 32 ohms, and only from the balanced output, drives most headphones but leaves little headroom for planar magnetics. The TRN Black Pearl rates higher with more balanced power and the same SINAD for less, and at 91 g it is heavy for a dongle.
Full Fosi Audio DS2 review and specifications →
| Released | Mar 2024 (2 years ago) |
|---|---|
| Balanced Output | Yes (4.4 mm) |
| DAC Chip | 2 x CS43131 |
| Device Type | USB-C dongle |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced |
| Inputs | USB-C |
| Output Power (32 ohms) | 170 mW (manufacturer rated, balanced) |
| SINAD | 117 dB (measured by Audio Science Review) |
| Volume Control | Digital (buttons) |
| Weight | 0.2 lbs (91 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons