I had the 4BST mated to various tube preamps a while back but never cared for the sound. You may want to consider a Bryston preamp. I replaced it a Belles 150A and couldn't be happier, the Bryston was outclassed in every category except power output.
Good preamp match for Bryston 4B ST
In process of upgrading. Currently have Bryston 4B ST, Dali Halicon 400 MkI speakers, and Rotel 1072 CD player. Listen to mainly acoustic music of all styles and prefer uncolored, if somewhat warm, musical sound with good imaging and soundstage. Already over budget a bit; would appreciate suggestions for a compatible preamp under $1K used.
Thanks in advance for any suggestions.
Thanks in advance for any suggestions.