I have run my Tannoy Sterlings with an EL34 Line Magnetic 211ai tube amp and to my ears that amp brings a smoothness and clarity to the upper mids and lower treble region that also seems troublesome with my hearing (sibilance) . I believe, though not positive, the driver in the Sterlings is the same as in the Eaton.
The 211ai delivers 36 watts in ultralinear and 16 watts triode. I use the ultralinear mode with the sterlings.
There are many EL34 tube amp available. My problem with the 211ai is the overly high sensitivity. Volume control is limited to 7-10 o'clock position.