my biggest regrets, krell kps20il sounded great. sent to a guy to fix the optical input got it back. would not read cds... 2k down the loo. a rotten pair of second hand vivid audio b1s from a dealer. rubber all perished on bass drivers, got repaired free of charge but the new drivers have warped after few months of use now vivid are being cocks about it. oh and had to get mid range reskined only to discover all O-rings were rotten also. they sent some but not enough to replace all that needed. total nightmare.