SPL Mercury Stereo Mastering DAC Digital to Analog Converter (Red)
Best mastering-grade converter for professional studio monitoring setups.
Experience unparalleled audio fidelity with the SPL Mercury Stereo Mastering DAC. This mastering-grade converter boasts innovative 120V rail technology and the AK4490 Velvet Sound® DAC chip for exceptional dynamic range and clarity. Offering extensive connectivity with seven digital inputs, including AES/EBU, S/P-DIF, TOSLINK, and USB, it supports high-resolution PCM up to 768kHz and DSD up to DSD256. The integrated analog volume control also allows it to function as a premium monitor controller, making it a versatile centerpiece for professional audio setups.
$2899.00
Owner Satisfaction
4.7
/ 5
Category Rank
83
/ 489
#83 in Audio Converters
Price vs Category Average
-34%
Below average
DAC Chip
4490
/ AK-Velvet Sound®
Who it's for
- Mastering engineers needing maximum headroom and dynamic range
- Critical listeners requiring absolute transparency for mix decisions
- Studio professionals integrating diverse digital source equipment
Who should skip it
- Home studio owners working with limited equipment budgets
- Users seeking an all-in-one monitoring and headphone solution
- Desktop producers preferring compact or neutral aesthetic gear
Performance breakdown
Conversion Fidelity
The AK4490 chip delivers pristine, mastering-grade transparency for critical listening sessions.
Dynamic Headroom
Proprietary 120V rail technology provides exceptional analog depth and signal stability.
Connectivity Versatility
Seven digital inputs ensure seamless integration into any complex studio workflow.
Monitor Control
The high-quality analog potentiometer offers precise, tactile volume management for engineers.
Resolution Support
Handles high-res PCM and DSD formats with effortless technical precision.
Build Integrity
Robust construction meets the rigorous physical demands of professional mastering environments.
Key Specs
DAC Chip
AK4490-Velvet Sound®
120V Rail Technology
Yes
Maximum PCM Sample Rate
Up to 768kHz
Maximum DSD Sample Rate
Up to DSD256
Digital Inputs
2x AES/EBU (1x Dual-Wire), 2x S/P-DIF Coaxial, 2x TOSLINK Optical, 1x USB
Analog Volume Control
ALPS RK27 "Big Blue" potentiometer
Reference Levels
0dBfs adjustable from 14dBu to 24dBu
Conversion Type
Digital to Analog (DAC)
Features
- Mastering-grade stereo DA conversion
- Innovative 120V rail analog technology
- High-resolution PCM and DSD support
- Versatile digital connectivity
- Functions as a high-end monitor controller
- Premium analog volume control
- Professional audio conversion
- AK4490 Velvet Sound® DAC chip
What customers say
Users consistently praise the SPL Mercury Mastering DAC for its exceptional sonic transparency and pristine clarity, making it ideal for critical listening. Reviewers emphasize its ability to reveal intricate audio details, supported by an expansive and precise soundstage with excellent instrument separation. Beyond performance, the robust build quality and striking red aesthetic receive frequent commendation. Despite its premium cost, owners feel the investment is thoroughly justified by the tangible improvements in audio fidelity and workflow accuracy. This unit is widely regarded as a reference grade component essential for achieving the highest standards in professional audio production.
Know before you buy
SPL’s proprietary 120V rail technology provides significantly higher headroom compared to standard audio circuits. This results in a cleaner, more transparent signal path with less distortion, which is critical for precise mastering decisions.
Yes, the Mercury is designed to function as both a high-end DAC and a monitor controller. It features a high-quality ALPS RK27 'Big Blue' analog potentiometer, allowing you to control your output volume directly from the unit.
The unit supports PCM audio up to 768kHz and DSD playback up to DSD256. This ensures compatibility with virtually all modern high-resolution mastering formats.
You can connect up to seven digital sources simultaneously. The input array includes two AES/EBU, two S/P-DIF coaxial, two TOSLINK optical, and one USB input, allowing for seamless switching between various digital playback devices.
Yes, the reference level is adjustable from 14dBu to 24dBu. This flexibility allows you to calibrate the DAC to match the specific gain staging requirements of your existing studio monitoring chain.
Yes, for Windows systems, you will need to install the dedicated SPL USB driver to ensure proper communication and high-resolution playback. Mac users can typically use the device as a plug-and-play interface via Core Audio.
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