If you're researching the SMSL VMV D2R MK2, chances are you've already come across the original VMV D2R — one of SMSL's most celebrated flagship DACs. In this comparison, we break down exactly what changed, what stayed the same, and whether the MK2 upgrade is worth it for your system.
Quick Verdict
The VMV D2R MK2 is a meaningful generational upgrade — not just a spec bump. The new ROHM BD34302EKV chip, OCXO clock system, full MQA decoding on all inputs, and Bluetooth 5.4 with LDAC represent real, audible improvements over the original D2R. If you're building a reference-grade desktop system, the MK2 is the one to get.
DAC Chip: BD34301EKV vs BD34302EKV
The original D2R uses the ROHM BD34301EKV, already a flagship-class chip delivering THD+N of -117dB. The MK2 steps up to the newer ROHM BD34302EKV, achieving an even lower 0.00013% THD+N and a 123dB dynamic range — a measurable improvement that translates to a blacker background and more resolving sound.
Clock System: CK-03 vs CK-04 OCXO
This is one of the biggest upgrades. The D2R uses SMSL's CK-03 clock circuit, which already brought optical/coaxial jitter performance in line with USB. The MK2 introduces the all-new CK-04 circuit with a 10MHz OCXO at ±5ppb stability — a communications-grade oscillator that virtually eliminates phase noise. The result is sharper imaging, tighter transients, and a more focused soundstage.
MQA Decoding
The original D2R does not support MQA hardware decoding. The D2R MK2 adds full MQA and MQA-CD decoding across all inputs — USB, optical, coaxial, and AES/EBU — making it a future-proof choice for Tidal Masters and MQA-encoded content.
Bluetooth: 5.1 vs 5.4
The D2R ships with Qualcomm Bluetooth 5.1 supporting SBC, AAC, aptX, aptX HD, and LDAC. The MK2 upgrades to Bluetooth 5.4 with the same codec support but improved connection stability and lower latency — a welcome refinement for wireless streaming.
Power Supply
Both units use a linear power supply with low-noise regulation. The MK2 adds a premium Noratel toroidal transformer (British-made) with VMV's patented adaptive voltage switching, providing cleaner power delivery and universal voltage compatibility.
Side-by-Side Spec Comparison
| Feature | VMV D2R | VMV D2R MK2 |
|---|---|---|
| DAC Chip | ROHM BD34301EKV | ROHM BD34302EKV |
| THD+N | 0.00014% (RCA) | 0.00013% |
| Dynamic Range | 125dB (RCA) | 123dB (XLR) |
| Clock System | CK-03 | CK-04 OCXO 10MHz ±5ppb |
| MQA Decoding | No | Full MQA / MQA-CD (all inputs) |
| Bluetooth | 5.1 (LDAC) | 5.4 (LDAC) |
| Power Supply | Linear PSU | Noratel Toroidal Transformer |
| PCM Support | 32bit/768kHz | 32bit/768kHz |
| DSD Support | DSD512 | DSD512 |
| USB Chip | XMOS XU-316 | XMOS XU316 |
Who Should Buy the VMV D2R MK2?
- Audiophiles building a reference desktop system who want the best measured performance available
- Tidal subscribers who want full MQA hardware unfolding
- Users who stream wirelessly and want the latest Bluetooth 5.4 with LDAC
- Anyone pairing with a high-end amplifier who needs 5.0Vrms balanced XLR output
Who Might Still Consider the Original D2R?
- Budget-conscious buyers who can find the D2R at a significant discount
- Users who don't use MQA or Bluetooth and primarily listen via USB
Final Thoughts
The SMSL VMV D2R MK2 is the definitive version of SMSL's flagship DAC. With the upgraded ROHM BD34302EKV chip, OCXO clock, full MQA support, and Noratel power supply, it represents a genuine step forward in every meaningful dimension. For serious audiophiles, it's the clear choice.
