My exp. with Focal Sopra No.2 , Harbeth 40.2, Passlabs XA30.5 and Hypex NC400


Hello. Long time reader here.

I want to share my listening experiences since i bought my Sopra No.2’s last year. I think it may shed some light on people who suffered from brightness on their system. Please excuse my English as it is not my native language.

My other components are Primaluna Dialogue Premium Preamp and Gustard x20pro Dac with Singxer SU-1 via HQ-Player and Roon. Interconnects are DH Labs Silversonic and speaker cable is Kimber 8TC. My room is 45m2 and not treated. I would say my room has some echo and can sound harsh on higher volume levels. (I will deal with this later hopefully.)

I will try to keep it short below:

Sopra No.2’s with NC400’s:
Pros: Extreme clarity with huge sound stage , speed&timing , dynamism , attack , total control on bass , good instrument separation. NC400 allows all this without breaking a sweat.
Cons: Fatiguing after some time , especially with higher volume. Bright and forward on almost half of the music i listen to and neutral on the other half but never warm. (I listen to almost every kind of music though it’s mostly Jazz both with vocals and instrumental only.) Mids and low-mids(esp. on vocals) were not rich and full as i wished.

The fatiguing alone bugged me to change my speakers and my dealer sent me Harbeth 40.2’s to try at home.

Harbeth 40.2’s with NC400’s:
So compared to Sopra No.2’s it was less hi-fi and more of a live music experience with the midrange of Harbeth’s as we know it. Non-fatiguing , just slightly warm ,sweet sound and overall a wonderful match with the speaker and the amp. Believe it or not it was more than just a glimpse of when i listened to 40.2’s with Dan D’Agostino MOMENTUM LIFESTYLE AMPLIFIER. Last weekend we tried the NC400’s with my brothers SLH5’s and i think he is now considering selling his Naim setup which is 6 times more expensive then NC400’s :)

I wanted to keep Harbeth 40.2’s but we could not agree on price with the dealer so i kept my Sopra’s and decided to try a well regarded amp with it. That was Pass Labs XA30.5.

Sopra No.2’s with Pass Labs XA30.5 :
Brightness and fatiguing gone for good. You get the magical warm sound of Pass Labs , suddenly Sopra’s are different speakers now. The amp really has it’s own color as they say. Bass is less controlled and almost too slow compared to NC400’s. I was worried about 30w is not going to be enough for my room but i never miss 200w’s of NC400’s unless i listen to electronic dance music.

I am never selling my NC400’s as they will come handy when i want to listen instrumental tracks or EDM.
For example , Chuck Mangione - Children of Sanchez or Charles Lloyd & The Marvels - La llorona gives you goosebumps when listened through NC400’s while with XA30.5 they won’t impress you as much.
They are really more than their money’s worth but the XA30.5 is still a better match with Sopra No.2’s.

I guess i couldn't keep it short. Oh well..


tonediary
@tonediary, If you like what the Hypex NC400’s do then you should definitely try the Mola Mola Kaluga’s, NC 1200 based amps by the designer of Hypex, Bruno Putzeys. 

Also check out his Kii active speakers which have 6 Hypex amps and dacs built in.
@tonediary, If you like what the Hypex NC400’s do then you should definitely try the Mola Mola Kaluga’s, NC 1200 based amps by the designer of Hypex, Bruno Putzeys.

Also check out his Kii active speakers which have 6 Hypex amps and dacs built in.

Both Kaluga's and Kii speakers are way out of my budget at the moment. Though i will look for a used Kaluga monoblocks in the future. Thanks.
The factors in sound reproduction perception in the sequence of importance:
1. brain+ears
2. loudspeakers+room
3. the recording 
4. dacs, amps, preamps, 
5. butterflies over china
6. cables, connectors, spikes, audio furniture, nanosprays etc
nugat:  perfectly stated.  Unfortunately, everyone on here will disagree.  This place is full of people who let their brain get the best of them and don’t understand the most basic aspects of human brain psychology.
nugat,

Agree with your general point, with the exception of spikes. Spikes will typically raise the speakers and changing the relationship of the woofers with the floor and especially the tweeter/mid level to the ear, it certainly can change the sound (as acoustics/speaker design would predict)...tdepending on the speaker design/dispersion characteristics, crossover design, etc.

But other than that...yeah :)

I am quite aware of how I can perceive my system’s sound differently at different times. Sometimes if I’m beginning to think less of the sound I take a break from listening for a few days or more, and when I come back I get "wow" again.

And it’s crazy how little I have to move a speaker to produce a difference in the sound, be it shifting or toe in/toe out. I have a room designed with the help of an acoustician and it allows me to "tune" the room a bit to taste - more lively, less lively, etc. It’s certainly educational to hear only the effects of changing room acoustics.

I haven’t tried any Chinese butterflies in the system, though ;-)