This is a hard one for me. I love my whole system.
The Tannoys bring me huge pleasure, as does my amazingly capable Monarchy Audio gear. I'm very fond of the remarkably good Pioneer PD-S505 Precision CD players. The 774 arm is a class act on my turntable.
The recently purchased Quad 306 power amp and vintage KEF Corelli speakers have proved to be excellent.
Hmm, It's got to be the irreplaceable MingDa MC-9 TVC pre-amp I think. What this does with music astonishes me each time I connect it into the system.
What are you favourites?