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The Naim Audio ND555 paired with the CD555 PS (or PS555) power supply is widely praised in user reviews and community discussions as one of the finest digital streamers and DACs available, excelling in musicality, rhythm, and dynamics while commanding a premium price.
### Sound Quality
Users and reviewers consistently highlight its direct, punchy, and rhythmically coherent sound with exceptional clarity, dynamics, and full-bodied tonality that avoids softness. It delivers precise stereo imaging, natural timbres, and composure across complex tracks, making music feel cohesive and expressive—often described as the best digital source heard, outperforming rivals like dCS in detail from high-quality recordings and pace/timing on acoustic music. The external power supply dramatically boosts dynamics, resolution, and listenability, even on average recordings, with some noting it rivals or surpasses vinyl. However, it can sound grating on poor recordings (e.g., early digital or compressed tracks like Monkees or Jack White), where competitors handle flaws more forgivingly.
### Build Quality
Superb construction is a common theme, with fine finishes, robust engineering, and versatile connectivity (e.g., DIN/RCA outputs, BNC coax, USB, Bluetooth aptX HD, Chromecast, Roon, AirPlay). Naim's traditional Burr-Brown PCM1704 DAC chip per channel is lauded over FPGA approaches for its results.
### Reliability
Discussions note a warm-up period of 1-2 hours (or more for capacitors) where it initially sounds harsh and flat before reaching peak performance—users advise patience. No widespread reliability complaints appear; it's seen as a "lifetime" component with consistent praise over years of ownership.
### Strengths
- Top-tier musicality, PRaT (pace, rhythm, and timing), and dynamics—often called Naim's best digital source ever.
- Significant upgrades from external PS, enhancing resolution without changing tonality.
- Versatile for streaming/high-res/CD-era playback; excels on well-recorded material.
### Weaknesses
- High cost, with optional second PS adding expense (though "worth it" for obsessed users).
- Less forgiving on subpar recordings compared to some rivals like dCS.
- Complex setup and initial burn-in delay.
### Overall Reputation
The ND555/CD555 PS combo holds an elite reputation as a "phenomenal music maker" and benchmark streamer/DAC, mesmerizing listeners and retaining value—many call it unbeatable for musical engagement, with owners reluctant to upgrade. It's frequently compared favorably to high-end alternatives, solidifying Naim's digital leadership.
English (US)