I have used Thiel speakers for many years, in many different systems. They need power, but much more importantly, the need solid state or high powered tube amplifiers that can provide substantial amounts of CURRENT into low impedance loads.
Three good choices that are generally in your budget are the MCCormack DNA amplifiers (like the DNA one), Classe amps from a few years ago, and the previously stated Conrad Johnson solid state amps like the MF 2500.
There are a number of others as well.
I'd use a warm sounding tube preamp that has good impedance match with the amp. Select the Amp first, then the preamp. The Theil 3.6 is capable of beautiful music if fed properly.
Three good choices that are generally in your budget are the MCCormack DNA amplifiers (like the DNA one), Classe amps from a few years ago, and the previously stated Conrad Johnson solid state amps like the MF 2500.
There are a number of others as well.
I'd use a warm sounding tube preamp that has good impedance match with the amp. Select the Amp first, then the preamp. The Theil 3.6 is capable of beautiful music if fed properly.