Short answer: the Fosi Audio SK02. It ranks #24 of 43 DAC and headphone amp combos by measured performance, rated 4.2/5, at $99.99; the Loxjie D30 ranks #31, rated 3.9/5, and costs $111.20, so there is not much of a tradeoff to weigh.
The Fosi Audio SK02 is the better-sounding choice. It is rated for 755 mW into 32 ohms from its 4.4 mm balanced output, enough for most planar magnetic headphones. Watch for: Its 105 dB SINAD trails rivals like the Fosi Audio K7 at 116 dB, though the difference is unlikely to matter for most listening.
The case for the Loxjie D30: Audio Science Review measured a SINAD of 119 dB, so its noise and distortion are inaudible. The tradeoff: Loxjie doesn’t publish an output power figure into 32 ohms, so it is hard to know which headphones it can drive.
Buy the Fosi Audio SK02. It is rated higher than the Loxjie D30 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Headphone Amps and DACs rankings.
Specifications Side By Side
| Fosi Audio SK02 | Loxjie D30 | |
|---|---|---|
| Price | $99.99 | $111.20 |
| Ranked | #24 of 43 in DAC and Headphone Amp Combos | #31 of 43 in DAC and Headphone Amp Combos |
| Device Type | DAC and headphone amp | DAC and headphone amp |
| SINAD | 105 dB (measured by Audio Science Review) | 119 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 755 mW (manufacturer rated, balanced) | - |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced | - |
| Balanced Output | Yes (4.4 mm) | - |
| Inputs | USB, optical | - |
| Outputs | 3.5 mm line out, optical | - |
| DAC Chip | ES9038Q2M | ES9068AS |
| Volume Control | Hardware knob | - |
| Dimensions | 4.8” x 2” x 1.7” (121 x 51 x 43 mm) | - |
| Weight | 0.8 lbs (380 g) | - |
| Bluetooth Codecs | - | SBC, aptX |
Related Amp and DAC Comparisons
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- Topping DX1 II vs Fosi Audio SK02
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- Fosi Audio SK02 vs SMSL D12
- Fosi Audio SK02 vs Fosi Audio K7
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 SK02: $99.99 Amazon eBay
Pros: It is rated for 755 mW into 32 ohms from its 4.4 mm balanced output, enough for most planar magnetic headphones. Audio Science Review measured a SINAD of 105 dB, clean for nearly all listening, and it rates higher than the pricier Fosi Audio K7. It also has USB and optical inputs plus line and optical outputs.
Cons: Its 105 dB SINAD trails rivals like the Fosi Audio K7 at 116 dB, though the difference is unlikely to matter for most listening. There is no Bluetooth or coaxial input and no RCA output for powered speakers, only a 3.5 mm line out.
Full Fosi Audio SK02 review and specifications →
| Released | Feb 2024 (2 years ago) |
|---|---|
| Balanced Output | Yes (4.4 mm) |
| DAC Chip | ES9038Q2M |
| Device Type | DAC and headphone amp |
| Dimensions | 4.8” x 2” x 1.7” (121 x 51 x 43 mm) |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced |
| Inputs | USB, optical |
| Output Power (32 ohms) | 755 mW (manufacturer rated, balanced) |
| Outputs | 3.5 mm line out, optical |
| SINAD | 105 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 0.8 lbs (380 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Loxjie D30: $111.20 Amazon eBay
Pros: Audio Science Review measured a SINAD of 119 dB, so its noise and distortion are inaudible. It combines a DAC and headphone amp in one box and adds Bluetooth with SBC and aptX. It costs relatively little for that measured performance.
Cons: Loxjie doesn’t publish an output power figure into 32 ohms, so it is hard to know which headphones it can drive. Its Bluetooth lacks AAC and LDAC. The SMSL DS20 rates clearly higher, with a published 500 mW into 32 ohms and a balanced output, though it costs more.
Full Loxjie D30 review and specifications →
| Bluetooth Codecs | SBC, aptX |
|---|---|
| DAC Chip | ES9068AS |
| Device Type | DAC and headphone amp |
| SINAD | 119 dB (measured by Audio Science Review) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons