SPL Mercury Stereo Mastering DAC Digital to Analog Converter (Black)
Best mastering-grade converter for professional audio engineers seeking pristine sonic transparency.
Experience unparalleled audio fidelity with the SPL Mercury Stereo Mastering DAC. Engineered for professional mastering, this converter boasts advanced 120V rail technology for exceptional dynamic range and sonic purity. It features the premium AKM AK4490 Velvet Sound® DAC chip, supporting high-resolution PCM up to 768kHz and DSD256. With seven versatile digital inputs, including AES/EBU Dual-Wire, and an analog volume control for monitor management, the Mercury delivers precise, transparent audio conversion for critical listening and production.
$2899.00
Owner Satisfaction
4.5
/ 5
Category Rank
297
/ 489
#297 in Audio Converters
Price vs Category Average
-34%
Below average
DAC Chip
4490
/ AKM AK Velvet Sound®
Who it's for
- Mastering engineers seeking maximum dynamic range and sonic transparency
- Studio professionals needing versatile connectivity for diverse digital sources
- Audio purists requiring absolute signal integrity and precise clocking
Who should skip it
- Hobbyists working with limited equipment budgets
- Users looking for an all-in-one headphone amp solution
- Desktop producers with restricted studio rack space
Performance breakdown
Dynamic Range
The 120V rail technology provides exceptional headroom for professional mastering tasks.
Conversion Fidelity
Velvet Sound architecture delivers transparent, high-resolution audio with surgical precision.
Connectivity Versatility
Seven digital inputs ensure seamless integration into any complex studio environment.
Monitor Control
Analog volume control offers smooth, tactile adjustment for critical listening sessions.
Format Support
Handles high-resolution PCM and DSD256 files with effortless technical capability.
Build Integrity
Robust construction meets the rigorous demands of daily professional studio use.
Key Specs
DAC Chip
AKM AK4490 Velvet Sound®
Max PCM Sampling Rate
768kHz
Max DSD Sampling Rate
DSD256
Supported Bit Depth
32-bit
Digital Inputs
7 total (2x AES/EBU, 2x S/P-DIF Coaxial, 2x TOSLINK Optical, 1x USB)
Analog Technology
120V Rail Technology
Volume Control
Analog (ALPS RK27 Potentiometer)
Reference Levels
Adjustable up to 24dBu
Features
- Mastering-grade stereo DAC for pristine audio
- High-voltage 120V rail technology for superior dynamics
- Dedicated PCM and DSD analog filters
- Supports high-resolution audio up to 768kHz PCM and DSD256
- Seven digital inputs for versatile connectivity
- AES/EBU Dual-Wire mode for enhanced digital audio
- Premium AKM AK4490 Velvet Sound® DAC chip
- Analog volume control doubles as a monitor controller
What customers say
Users consistently praise the SPL Mercury Mastering DAC for its exceptional sonic transparency and pristine audio reproduction. Mastering engineers and audiophiles value its uncolored, accurate sound, noting its ability to reveal intricate details, expansive soundstages, and controlled bass. This performance significantly enhances precision in high-fidelity work, making it an indispensable tool for critical listening. Beyond audio quality, the robust build and professional aesthetic reinforce its premium status. While the investment is substantial, the consensus is that the unparalleled sonic integrity fully justifies the cost for professional environments where fidelity is paramount. This unit solidifies its reputation as a top-tier choice.
Know before you buy
SPL's proprietary 120V rail technology operates at a much higher voltage than standard audio circuits. This provides significantly more headroom, resulting in a wider dynamic range and reduced distortion, which is critical for making precise mastering decisions.
Yes, the Mercury features a high-quality analog volume control using an ALPS RK27 'Big Blue' potentiometer. This allows you to adjust your output levels directly from the unit, effectively serving as a transparent monitor controller for your mastering chain.
Yes, the unit supports DSD playback up to DSD256. It includes dedicated analog filters specifically designed for both PCM and DSD formats to ensure optimal signal integrity.
The Mercury offers seven digital inputs, including two AES/EBU, two coaxial S/P-DIF, two optical TOSLINK, and one USB port. You can easily switch between these sources, making it a versatile hub for a complex studio setup.
The AES/EBU Dual-Wire mode allows for the transmission of high-resolution audio data across two separate cables. This is particularly useful for maintaining compatibility with older high-end digital mastering gear that requires this specific connection standard.
Yes, the Mercury allows you to adjust reference levels up to 24dBu. This flexibility ensures you can perfectly calibrate the DAC's output to match the input sensitivity of your analog outboard gear or monitoring system.
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