There’s a DNA 1 with Steve’s Rev A Gold+ level revisions on EBay for $1749. I haven’t heard the A21, but the DNA amps with these revisions set a high bar and are an incredible value used. Best of luck.
Which do you prefer parasound Halo a21 or McCormack dna1
Looking to move up from a b&k ref s2 will power nht 2.9.i have a pair of 2.5 now and really liked the McCormack,but been hearing good things about the parasound