The NAD C399 is one of the most powerful and clean integrated amplifiers in its class. The Hypex Hybrid Digital nCore are BEAST, offering huge power reserves with absolutely low distortion and excellent bass control, especially on difficult speakers with low sensitivity. The C399's tonality is neutral and accurate without a hint of fatigue, while the soundstage it creates is stable, deep, and absolutely clear even at high volumes.

The BluOS module provides top-notch streaming with Tidal/Qobuz/Air Play, etc., while Dirac Live transforms the room and acoustics. The build quality is simple, robust, and absolutely functional, without unnecessary gimmicks. In practice, the C399 has the power of a true Power Amp and the clarity of a reference Hi-Fi, maintaining control even in listening sessions over 100 dB without a hint of distortion.

For its price, it's hard to find such a powerful, neutral, and technically perfect amplifier, capable of driving large, low-sensitivity speakers with such impressive ease.

The noise floor is essentially negligible, with zero hiss/hum and non-existent HF artifacts from the switching stage. The nCore topology operates with such low distortion and residual noise that the tweeters remain completely silent, even at extreme volume positions and with no source connected.

Also, something particularly important: you can listen as loud as you want and the amplifier remains cool and absolutely relaxed in its operation.

10 out of 10 and that's an understatement