firstnot
Lets look at this with some sanity, no-one else has yet.
1: Oppo 205 voltage output 2.1v se 4.2v xlr
2: Cary120 sensitivity only 1.2v in for full output, at 100kohm input z
3: Tannoy FMS 97db efficiency!!!
Look at this closely, the last thing you need is an active preamp with even more gain, you’ll be at 8 o’clock for full ear spitting output.
What you need is a preamp with little or no gain or a passive preamp.
And that 100kohm input impedance on the Cary means anything will drive it.
Cheers George