Mark The AT-1 manual says 450v, however mine runs about 460v. So , yes you are right, the series combo has a rating of 700v which is substantially more than what it sees. As I mentioned earlier, the AT-1 has no fuse (mine will soon have one ). My AT-1 was a $5.00 flea market item which came without the power xfmr. The corner of the chassis where the xfmr was mounted was covered with black crap where the xfmr obviously had a melt down probably due to a failed filter caps and no fuse protection!
73 Wayne, N0TE
