02-06-2021, 03:27 PM
En effet, on ne peut pa être entièrement surpris si ça sonne pas tout à fait pareil (le M33 est le seul ampli à modules Purifi qui me soit venu à l'esprit ) - l'effet tube est non seulement audible mais clairement mesurable :
Fig.4 Benchmark AHB2, sum of distortion harmonics (dB ref. fundamental) vs 1kHz continuous output power into 4 ohms.
![[Image: 1115BAHB2fig05.jpg]](https://www.stereophile.com/images/1115BAHB2fig05.jpg)
Fig.7 NAD M33, analog input, distortion (%) vs 1kHz continuous output power into 4 ohms.
![[Image: 920NAD33fig07.jpg]](https://www.stereophile.com/images/920NAD33fig07.jpg)
Fig.6 Ypsilon Aelius, C3g input tube, distortion (%) vs 1kHz continuous output power into 4 ohms.
Fig.4 Benchmark AHB2, sum of distortion harmonics (dB ref. fundamental) vs 1kHz continuous output power into 4 ohms.
![[Image: 1115BAHB2fig05.jpg]](https://www.stereophile.com/images/1115BAHB2fig05.jpg)
Fig.7 NAD M33, analog input, distortion (%) vs 1kHz continuous output power into 4 ohms.
![[Image: 920NAD33fig07.jpg]](https://www.stereophile.com/images/920NAD33fig07.jpg)
Fig.6 Ypsilon Aelius, C3g input tube, distortion (%) vs 1kHz continuous output power into 4 ohms.
![[Image: 413Ypsalfig06.jpg]](https://www.stereophile.com/images/413Ypsalfig06.jpg)
Ze World Class Lounge System Special Deluxe :
Volumio/RPi - Denon DN-300Z MkII / QR1 PinarDSP / Benchmark AHB2 x 3 / KF Studio 30 / traitement acoustique DIY
Et pour le côté obscur intimiste, l'ex-Frankenchaîne