Best pre-amp to match with the Dynaco ST-70?


I need to find out the best pre-amp not produced by Dynaco to match with the Dynaco ST-70? I have a pair I am going to run in mono? Any suggestions?
jl1024
If you can solder, look at the Bottlehead Foreplay. It comes as a kit, just like an old Dynaco. Very cheap, only $149. I use one with an ST-70. It is much better sounding than the price would indicate.
I drove a dyna 70 w/ a Rogue 99
It sounded incredible!
I miss my old dyna (and 99)