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 AudioQuest DragonFly Red ranks #12, rated 2.5/5, and costs $149.95, so there is not much of a tradeoff to weigh.
The Fosi Audio DS3 is the better-sounding choice. Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. The catch: 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.
Why pick the AudioQuest DragonFly Red: It is a compact USB stick DAC with a 3.5 mm headphone jack and a high resolution digital volume control set from the phone or computer. Watch for: Audio Science Review measured a SINAD of 88 dB, a real audible weakness with sensitive in-ear monitors.
Buy the Fosi Audio DS3. It is rated higher than the AudioQuest DragonFly Red and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Headphone Amps and DACs rankings.
Specifications Side By Side
| Fosi Audio DS3 | AudioQuest DragonFly Red | |
|---|---|---|
| Price | $99.99 | $149.95 |
| Ranked | #4 of 14 in USB-C Dongle DACs | #12 of 14 in USB-C Dongle DACs |
| Device Type | USB-C dongle | USB-C dongle |
| SINAD | 116 dB (measured by Audio Science Review) | 88 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 220 mW (manufacturer rated) | - |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced | 3.5 mm |
| Balanced Output | Yes (4.4 mm) | No |
| Inputs | USB-C | USB-A |
| DAC Chip | ES9039Q2M | ES9016 |
| Volume Control | Digital (buttons) | Digital (64-bit, on DAC chip, set from phone/PC) |
| Equalizer | Yes (32-band parametric) | - |
| Dimensions | 2.2” x 0.8” x 0.4” (55 x 20 x 11 mm) | 0.7” x 0.5” x 2.4” (19 x 12 x 62 mm) |
| Weight | 0 lbs (16 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
AudioQuest DragonFly Red: $149.95 Amazon eBay
Pros: It is a compact USB stick DAC with a 3.5 mm headphone jack and a high resolution digital volume control set from the phone or computer.
Cons: Audio Science Review measured a SINAD of 88 dB, a real audible weakness with sensitive in-ear monitors. AudioQuest does not publish a power figure into 32 ohms, and it plugs into USB-A, so phones need an adapter. The Samsung USB-C to 3.5mm Headphone Jack Adapter measures cleaner and rates higher for a fraction of the cost.
Full AudioQuest DragonFly Red review and specifications →
| Balanced Output | No |
|---|---|
| DAC Chip | ES9016 |
| Device Type | USB-C dongle |
| Dimensions | 0.7” x 0.5” x 2.4” (19 x 12 x 62 mm) |
| Headphone Outputs | 3.5 mm |
| Inputs | USB-A |
| SINAD | 88 dB (measured by Audio Science Review) |
| Volume Control | Digital (64-bit, on DAC chip, set from phone/PC) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons