AudioChainsDB
NAD

C 399

amplifier

$2,899

Used market: $2,085*

Manufacturer datasheet

Specifications

3 of 5 values have a recorded source
Amp Type
Integrated Stereo Amp·
Channels
2·
Speaker Outputs
·
Power Output Per Channel
{"thdPercent":0.02,"continuousWatts":180,"loadImpedance_ohms":8}, {"thdPercent":0.02,"continuousWatts":180,"loadImpedance_ohms":4}✓
Min Supported Impedance ohms
4✓

Expert Audio Engineering Commentary

Headroom Notes

>180 W into 8 ohms and 4 ohms alike, distortion under 0.02 % from 250 mW to 180 W. The 'greater than' is NAD's own wording: the number is a floor, not a peak, which is the opposite of how most of the category writes its headline watts.

* Estimated with the depreciation fallback (~72% retained value). · checked on 8/5/2026