The SMSL VMV D2R MK2 arrives as SMSL's most ambitious DAC to date — a full redesign of the acclaimed VMV D2R with a next-generation ROHM chip, a professional OCXO clock, full MQA decoding, and a Noratel toroidal transformer. At $1,160, it competes directly with the best desktop DACs on the market. Here's our full breakdown.
Design & Build Quality
The D2R MK2 retains the D2R's premium chassis with a 1.9-inch fully bonded tempered glass display for superior light transmission and longevity. The newly designed multifunction control knob feels precise and satisfying, with a one-touch "Best Setting" mode for quick access to optimized playback presets. At 3.25kg and 279.8 × 50.8 × 255.1mm, it has a solid, authoritative desktop presence without being oversized. Gold-plated RCA and balanced XLR outputs complete the rear panel alongside a comprehensive input array.
The ROHM BD34302EKV — A New Flagship Chip
SMSL has moved from the BD34301EKV to the newer ROHM BD34302EKV, a conversion platform known for stable linearity and low distortion across high-resolution playback formats. The fully-balanced internal signal path preserves channel separation and low-level detail from input to output, with the analog and digital sections physically separated to minimize internal interference.
Measured performance: THD+N of 0.00013% (−117dB), dynamic range of 123dB, and an SNR of 123dB at the balanced XLR output (5.0Vrms). These are reference-class figures that rival DACs costing two to three times as much.
CK-04 OCXO Clock — The Game Changer
The most significant engineering upgrade in the MK2 is the CK-04 clock circuit with a 10MHz OCXO at ±5ppb stability. Unlike conventional crystal oscillators that drift with temperature variation, the oven-controlled design maintains a stable operating temperature to reduce phase noise and timing instability throughout the digital audio chain.
This communications-grade oscillator benefits all inputs — not just USB. Optical and coaxial inputs now share the same ultra-low jitter performance, which was previously a key weakness of S/PDIF connections in competing DACs. The result is improved transient precision and stereo image stability across extended listening sessions.
High-Resolution Digital Platform
The XMOS XU316 USB processor provides the computational headroom required for modern high-bandwidth audio formats. USB and I²S inputs support PCM up to 768kHz/32-bit and native DSD512, while optical, coaxial, and AES/EBU inputs cover PCM up to 192kHz and DoP playback.
Full MQA Decoding on All Inputs
The D2R MK2 is one of the few DACs at this price point to offer full MQA and MQA-CD hardware unfolding on USB, optical, coaxial, and AES/EBU inputs. For Tidal Masters subscribers, this means bit-perfect studio-quality playback without relying on software rendering.
Connectivity
Inputs include USB-C, optical, coaxial, AES/EBU, I²S via HDMI, Bluetooth 5.4, and a dedicated external 10MHz clock input for integration with precision clock sources and digital front ends. Outputs are balanced XLR (5.0Vrms) and single-ended RCA (2.5Vrms). The high output voltage makes it an excellent match for passive preamplifiers and power amplifiers with high input sensitivity.
Bluetooth 5.4 with LDAC
Qualcomm Bluetooth 5.4 supports LDAC (24-bit/96kHz), aptX HD, aptX, AAC, and SBC. Wireless streaming sounds genuinely impressive — LDAC at 990kbps delivers a listening experience that's difficult to distinguish from a wired connection at normal listening levels, making the D2R MK2 a capable wireless endpoint for mobile devices and network streamers.
Power Supply
A Noratel toroidal transformer anchors the linear power supply, combined with SMSL's adaptive voltage switching technology to maintain stable operation across different power environments. The analog and digital stages are powered independently, reducing power-related interference during demanding playback conditions — a meaningful upgrade over the original D2R's PSU that contributes directly to the MK2's lower noise floor.
Verdict
The SMSL VMV D2R MK2 is one of the most technically accomplished DACs available under $1,500. The combination of the ROHM BD34302EKV, OCXO clock, full MQA support across all inputs, external clock input, and Noratel power supply puts it in genuine reference territory. If you're serious about digital audio and want the best measured performance at this price, the D2R MK2 is an exceptional choice.
Pros:
- Outstanding measured performance (0.00013% THD+N, 123dB DR)
- OCXO clock benefits all inputs, not just USB
- Full MQA decoding on all inputs including AES/EBU
- Bluetooth 5.4 with LDAC (24-bit/96kHz)
- Dedicated external 10MHz clock input
- Premium Noratel toroidal transformer
- High output voltage (5.0Vrms XLR)
- XMOS XU316 with PCM768/DSD512 support
Cons:
- Premium price point
- No headphone output (pure DAC)
