Short answer: the Topping D900 if measured performance matters most, the SMSL VMV D2R if price matters most. The Topping D900 ranks #2 of 30 DACs, rated 4.9/5, at $1,799. The SMSL VMV D2R ranks #16, rated 4.8/5, at $999, $800 cheaper.
Why pick the Topping D900: Audio Science Review measured 122 dB SINAD, so its noise and distortion are transparent. It supports aptX Adaptive Bluetooth, which the SMSL VMV D2R lacks. The tradeoff: The Topping D50 III matches its rating with slightly higher measured SINAD for a small fraction of the price.
The case for the SMSL VMV D2R: Audio Science Review measured a SINAD of 117 dB, so its noise and distortion are inaudible. Watch for: It is the priciest DAC in its group yet only matches the rating of the SMSL D-6S, which costs a fraction as much and measured cleaner.
Buy the Topping D900 if measured performance matters more than the price. Buy the SMSL VMV D2R if the price matters more than measured performance.
Still deciding? The full Headphone Amps and DACs rankings cover every ranked option.
Specifications Side By Side
| Topping D900 | SMSL VMV D2R | |
|---|---|---|
| Price | $1,799.00 | $999.00 |
| Ranked | #2 of 30 in DACs | #16 of 30 in DACs |
| Device Type | DAC | DAC |
| SINAD | 122 dB (measured by Audio Science Review) | 117 dB (measured by Audio Science Review) |
| Balanced Output | Yes (XLR line out) | Yes (XLR line out) |
| Inputs | USB-B, USB-C, optical x2, coaxial x2, AES, I2S, Bluetooth | USB, optical, coaxial, AES, I2S, Bluetooth |
| Outputs | XLR (line out), XLR (preamp out) | RCA, XLR |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | Discrete PSRM 1-bit module | BD34301EKV |
| Volume Control | Hardware knob | Hardware knob |
| Equalizer | Yes (10-band parametric) | - |
| Dimensions | 13” x 2.2” x 8.3” (330 x 57 x 210 mm) | 11” x 1.7” x 9.3” (280 x 43 x 235.5 mm) |
| Weight | 5.6 lbs (2,520 g) | 7.1 lbs (3,200 g) |
Related Amp and DAC Comparisons
More top alternatives to Topping D900:
- Topping D900 vs SMSL SU-10
- Topping D900 vs Topping D90 III Sabre
- Topping D900 vs SMSL M400
- Topping D900 vs Topping Centaurus
- Topping D900 vs Chord Qutest
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Amps and DACs In Full
Topping D900: $1,799.00 Amazon eBay
Pros: Audio Science Review measured 122 dB SINAD, so its noise and distortion are transparent. It has a huge input set, including USB, two optical, two coaxial, AES, I2S and Bluetooth with LDAC and aptX Adaptive, plus a volume knob, 10 band parametric EQ and an XLR preamp output for powered speakers.
Cons: The Topping D50 III matches its rating with slightly higher measured SINAD for a small fraction of the price. Outputs are XLR only with no RCA, and at 2,520 g it is a large unit.
Full Topping D900 review and specifications →
| Released | Jun 2025 (1 year ago) |
|---|---|
| Balanced Output | Yes (XLR line out) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC |
| DAC Chip | Discrete PSRM 1-bit module |
| Device Type | DAC |
| Dimensions | 13” x 2.2” x 8.3” (330 x 57 x 210 mm) |
| Equalizer | Yes (10-band parametric) |
| Inputs | USB-B, USB-C, optical x2, coaxial x2, AES, I2S, Bluetooth |
| Outputs | XLR (line out), XLR (preamp out) |
| SINAD | 122 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 5.6 lbs (2,520 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
SMSL VMV D2R: $999.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 117 dB, so its noise and distortion are inaudible. It offers USB, optical, coaxial, AES, I2S and Bluetooth with LDAC, aptX HD and AAC, plus RCA and balanced XLR outputs and a hardware volume knob for use as a preamp.
Cons: It is the priciest DAC in its group yet only matches the rating of the SMSL D-6S, which costs a fraction as much and measured cleaner. The Topping D70 Pro SABRE also measured cleaner at 123 dB for much less. At 3.2 kg it is large and heavy.
Full SMSL VMV D2R 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 | BD34301EKV |
| Device Type | DAC |
| Dimensions | 11” x 1.7” x 9.3” (280 x 43 x 235.5 mm) |
| Inputs | USB, optical, coaxial, AES, I2S, Bluetooth |
| Outputs | RCA, XLR |
| SINAD | 117 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 7.1 lbs (3,200 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons