Short answer: the SMSL D-6S. Both are rated 4.8/5 (#9 and #17 of 30 DACs), and the SMSL D-6S costs $199.99 against $319 for the SMSL D200, with the ratings tied, the lower price decides it.
What the SMSL D-6S does well: Audio Science Review measured 122 dB SINAD, so its noise and distortion are transparent. The catch: There is no volume control listed, so it relies on the amp or speakers downstream to set level.
What the SMSL D200 does well: Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. Watch for: The SMSL D-6S rates the same and measures cleaner at 122 dB for less.
Buy the SMSL D-6S. Both are rated the same, and it costs $119.01 less than the SMSL D200.
Looking for alternatives? See the complete Headphone Amps and DACs rankings.
Specifications Side By Side
| SMSL D-6S | SMSL D200 | |
|---|---|---|
| Price | $199.99 | $319.00 |
| Ranked | #9 of 30 in DACs | #17 of 30 in DACs |
| Device Type | DAC | DAC |
| SINAD | 122 dB (measured by Audio Science Review) | 116 dB (measured by Audio Science Review) |
| Balanced Output | Yes (XLR line out) | Yes (XLR line out) |
| Inputs | USB, optical, coaxial, Bluetooth | USB, optical, coaxial, Bluetooth |
| Outputs | RCA, XLR | RCA, XLR |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | ES9039Q2M | ROHM BD34352EKV |
| Dimensions | 5.9” x 1.7” x 5.1” (150 x 42 x 128.5 mm) | 7.9” x 1.9” x 7.8” (200 x 47.9 x 197.9 mm) |
| Weight | 1.6 lbs (710 g) | 2.7 lbs (1,214 g) |
| Volume Control | - | Hardware knob and remote (preamp mode) |
Related Amp and DAC Comparisons
How SMSL D-6S compares with other leading options:
- Topping D50 III vs SMSL D-6S
- SMSL D-6S vs SMSL DO200 MKII
- Fosi Audio ZD3 vs SMSL D-6S
- SMSL D-6S vs SMSL SU-6
- SMSL D-6S vs Soncoz LA-QXD1
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
SMSL D-6S: $199.99 Amazon eBay
Pros: Audio Science Review measured 122 dB SINAD, so its noise and distortion are transparent. It offers USB, optical, coaxial and LDAC Bluetooth inputs with RCA and XLR outputs for an amp or powered speakers. It matches the rating of the Topping D70 Pro SABRE for far less.
Cons: There is no volume control listed, so it relies on the amp or speakers downstream to set level. DACs such as the Topping D70 Pro SABRE measure a touch cleaner at 123 dB, though they cost far more and the difference is not audible.
Full SMSL D-6S review and specifications →
| Released | Sep 2023 (3 years ago) |
|---|---|
| Balanced Output | Yes (XLR line out) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | ES9039Q2M |
| Device Type | DAC |
| Dimensions | 5.9” x 1.7” x 5.1” (150 x 42 x 128.5 mm) |
| Inputs | USB, optical, coaxial, Bluetooth |
| Outputs | RCA, XLR |
| SINAD | 122 dB (measured by Audio Science Review) |
| Weight | 1.6 lbs (710 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
SMSL D200: $319.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. It feeds powered speakers or an amp through RCA or balanced XLR outputs, and a volume knob and remote let it work as a preamp. Inputs cover USB, optical, coaxial and Bluetooth with LDAC, aptX HD and AAC.
Cons: The SMSL D-6S rates the same and measures cleaner at 122 dB for less. Its SINAD trails the 123 dB of the Topping D70 Pro SABRE, though both are well past the point of audibility. At 1,214 g, it is a full-size box.
Full SMSL D200 review and specifications →
| Released | Aug 2025 (1 year ago) |
|---|---|
| Balanced Output | Yes (XLR line out) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | ROHM BD34352EKV |
| Device Type | DAC |
| Dimensions | 7.9” x 1.9” x 7.8” (200 x 47.9 x 197.9 mm) |
| Inputs | USB, optical, coaxial, Bluetooth |
| Outputs | RCA, XLR |
| SINAD | 116 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob and remote (preamp mode) |
| Weight | 2.7 lbs (1,214 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons