I owned a late model REF1 which I replaced with a LS25 MKI several years ago. At that time I was using Quad USA Monitors and a VT100. I thought that the LS25 was very close to the REF1 in my system: to me, the LS25 had an edge in resolution, whereas the REF1 seemed to have a slightly better soundstage. There was not enough difference to justify the price difference and I hated burning 8 NOS tubes in the REF1 verses 4 in the LS25. Good Luck!
BTW, with your VT200, do you know if there is a single bias adjustment for each octet of 6550's?
BTW, with your VT200, do you know if there is a single bias adjustment for each octet of 6550's?