APS audio transformers

Introducing the Premium Power Upgrade for the DirectStream MK2 DAC

Audio enthusiasts and audiophiles know that subtle enhancements in power supply design can profoundly impact sound quality. Our latest premium upgrade for the DirectStream MK2 DAC exemplifies this truth by incorporating a sophisticated R-core analog AC transformer that effectively doubles the original power capacity for the digital board to 50 watts – matching the power allotted to the analog board. Each board now benefits from its dedicated power transformer, providing a level of electrical isolation and precision previously unmatched in this device.

Why This Upgrade Matters

The heart of this enhancement lies in the choice of the R-core transformer. After exhaustive research and testing several transformer types—including Triad Magnetics, O-cores, and conventional models—we found the R-core transformer superior in both objective measurements and sonic performance when powering the analog board. This discovery is consistent with our prior findings during the development of the MK1 Analog board power supply.

What does this mean for the listener? The upgrade yields an unexpectedly dramatic improvement in audio reproduction. The soundstage becomes noticeably more vibrant and dynamic, particularly in the midrange and lower frequencies, which adds a richness and depth often lost in lesser setups. High frequencies gain enhanced realism—transcending mere brightness to achieve clarity and detail that make instruments come alive. Stringed instruments, in particular, now resonate with extraordinary authority and nuance, revealing textures and subtle articulations with remarkable fidelity.

Simple Installation, Outstanding Results

Upgrading your DirectStream MK2 DAC is straightforward: simply send us your unit, and our experts will professionally install the premium power supply upgrade. This comprehensive service ensures the highest standards of quality control, allowing you to experience the full benefits without the hassle of a DIY installation.

Conclusion

This power supply upgrade elegantly demonstrates how refined engineering choices can elevate the performance of a high-end DAC beyond expectations. By installing a dedicated, high-capacity R-core transformers for the analog board and doubling the transformer capacity for the digital board, the DirectStream MK2 delivers a richer, more engaging listening experience—one that invites you to rediscover your favorite music with newfound clarity and warmth. As audio technology continues to evolve, such meticulous attention to power delivery remains a cornerstone of exceptional sound reproduction.