At present I have a pair of Naim Nap 155XS power amplifiers driving some Monitor Audio Gold Reference 60s. I am using a Conrad Johnson PVL14 as the pre-amplifier but the noise floor is quit high, the bass (20-40Hz) isn’t too clever and it has been eating its way through valves (when really they should last a lot longer).
What would anybody recommend as a new pre-amp?