Short answer: a tie on measured performance. Both are rated 4.5/5 (#25 and #22 of 30 DACs) at nearly the same price ($84.99 vs $87.99), so choose on features and fit.
What the Fosi Audio Q6 does well: Audio Science Review measured 115 dB SINAD, so its noise and distortion are transparent. The catch: There are no balanced outputs and no volume control, so it needs an amp or speakers with their own volume.
The case for the SMSL PS200 PRO: Audio Science Review measured a SINAD of 120 dB, so its noise and distortion are inaudible. The tradeoff: There is no balanced XLR output and no Bluetooth input.
Buy the Fosi Audio Q6 or the SMSL PS200 PRO on features: they are rated the same at close to the same price.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| Fosi Audio Q6 | SMSL PS200 PRO | |
|---|---|---|
| Price | $84.99 | $87.99 |
| Ranked | #25 of 30 in DACs | #22 of 30 in DACs |
| Device Type | DAC | DAC |
| SINAD | 115 dB (measured by Audio Science Review) | 120 dB (measured by Audio Science Review) |
| Balanced Output | No | No |
| Inputs | USB-C, optical, coaxial | USB, optical, coaxial |
| Outputs | RCA, sub out | RCA |
| DAC Chip | AK4493S | ES9039Q2M |
| Volume Control | None (fixed-level DAC) | - |
| Dimensions | - | 3.9” x 0.9” x 3.3” (100 x 23 x 84.7 mm) |
| Weight | - | 0.4 lbs (168.5 g) |
Related Amp and DAC Comparisons
How SMSL PS200 PRO compares with other leading options:
- SMSL SU-2 vs SMSL PS200 PRO
- SMSL SU-6 vs SMSL PS200 PRO
- SMSL PS200 PRO vs SMSL SU-1
- SMSL PS200 PRO vs Topping E30 II Lite
- SMSL PS200 PRO vs Topping D10s
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 Q6: $84.99 Amazon eBay
Pros: Audio Science Review measured 115 dB SINAD, so its noise and distortion are transparent. It takes USB-C, optical and coaxial inputs and feeds an amp or powered speakers over RCA, with a separate sub out for adding a subwoofer. It matches the rating of the SMSL PS200 PRO for slightly less.
Cons: There are no balanced outputs and no volume control, so it needs an amp or speakers with their own volume. The SMSL SU-2 rates higher with lower measured distortion and XLR outputs for a little more.
Full Fosi Audio Q6 review and specifications →
| Released | Apr 2025 (1 year ago) |
|---|---|
| Balanced Output | No |
| DAC Chip | AK4493S |
| Device Type | DAC |
| Inputs | USB-C, optical, coaxial |
| Outputs | RCA, sub out |
| SINAD | 115 dB (measured by Audio Science Review) |
| Volume Control | None (fixed-level DAC) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
SMSL PS200 PRO: $87.99 Amazon eBay
Pros: Audio Science Review measured a SINAD of 120 dB, so its noise and distortion are inaudible. It is a small, inexpensive box with USB, optical and coaxial inputs and an RCA output for an amp or powered speakers. It measured cleaner than the SMSL SU-1 for about the same price.
Cons: There is no balanced XLR output and no Bluetooth input. The SMSL SU-2 rates higher and measured even cleaner at 123 dB for only a little more.
Full SMSL PS200 PRO review and specifications →
| Released | Oct 2025 (1 year ago) |
|---|---|
| Balanced Output | No |
| DAC Chip | ES9039Q2M |
| Device Type | DAC |
| Dimensions | 3.9” x 0.9” x 3.3” (100 x 23 x 84.7 mm) |
| Inputs | USB, optical, coaxial |
| Outputs | RCA |
| SINAD | 120 dB (measured by Audio Science Review) |
| Weight | 0.4 lbs (168.5 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons