After swapping my present speaker cable, i.e. Chord Carnival Silver Plus with Van den Hul the Goldwater, i can hear a warmer sound stage and more comfortable listening for hours.
Upgraded integrated amplifier from Cambridge Audio 540A to Krell KAV-400xi, pairing with Sonus Faber Concertino Domus speaker.
I can hear a greater depth, detail and transparency of sound than before. Hope the sound will improve further after break in.
So pleased that i can enjoy all my music collection again.
I have the AA Primo Settanta and in many ways it is the best amp I ever had. It is not quite as refined as my YBA Design, but it is more engaging. Look up my system to see it. The key to its beautiful analogue sound is the use of powerpacks like Jeff Rowland and 47 Labs use, but at a budget price.
Here are some brief thoughts on it that I posted: http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1213790315&read&3&4&
The Cento VT is the same integrated w/ a tube preamp. It is a smoother and not as dynamic. The Verdi Settanta has the same powerpack amp section with a much better two tube preamp section. The Puccini Settqanta uses a typical SS amp section w/ a SS preamp section.
The magic of the Primo, Cento, and Verdi is the LM3886 powerpacks. Do research on these National Semiconductor gain cards and you will find that they are awesome chip amps and contribute to its warm, fast, and dynamic sound.