Although your listening space is not very large, I am not sure whether 300B SET amp can drive B&W 805 with enough authority.
I recommend Line Magnetic 508 or 805 SET amp 48 watt to drive it.
New one is over your budget.
Thus you may want to wait until good used one come out or save some more money.
I recommend Line Magnetic 508 or 805 SET amp 48 watt to drive it.
New one is over your budget.
Thus you may want to wait until good used one come out or save some more money.