I’ve had a 552 DR since Wednesday. It was made available on loan to me through my dealer by Naim. A big thank you.
I feel very happy with my 252 + SuperCap DR (2 and 3 years old respectively). I’ve spent a lot of time getting the system setup. It sounds really good on lots of music.
I’ve gradually got to hear more and more of what is on each album with the 252. However, I happened to be listening to Queen - Greatest Hits Vol 1 when the call came out of the blue (I’ve been waiting two months). It exhibited a phenomenon of the vocals going a bit quiet at times on some tracks.
I continued playing this after swapping the preamps (new Burndy, Snaic and Powerline) - in fact looking like new despite its serial number. Much more umph and excitement, and the vocals didn’t go quiet anywhere. In fact one could tell that other members were singing as well. Guitars sound much better.
So my conclusion is that the 552 is much faster than the 252 - another way of saying it reveals more detail because it can follow the source signal better. The notes are fuller and the decays more complex. With other music that sounded as good as I could hope for the difference was smaller, but more detail, female voices hitting the pitch more quickly, and therefore sounding louder…
So I would be interested in hearing from those who have made a similar journey as to the changes you noticed. @Simon-in-Suffolk described his experience as a more refined sound.
I’d also be interested in knowing whether quietness in some vocals with the 252 can be fixed - is it a timing problem (phase of left and right not quite right)?
How can I expect the 552 sound to develop as it warms up/burns in (will the new Burndy and SNAIC take a long time)? Can I use my 252 Burndy and SNAIC? I haven’t had a bad day yet.
Oh, and the power supply hums quite loudly which the SC didn’t.
Listening to Dvorak 8, one we never get tired of, the various sections of the orchestra sound so clear and well balanced with each other. The drums sound so natural and vibrant without being loud.