I concur with the above two posters. Though I haven't yet heard the 2.4s, I can't imagine the updates are worth twice that of a used pair of recent 2.3s.
Yes, a high current solid state amp with a 4ohm power rating double its 8 ohm rating and full stability into 2ohms is essential for the spkrs to sound anywhere near their potential. Actual rated amp power is more a function of your room size and listening level preferences.
Thiel has the serial # after which the new coaxes were installed by the factory - call them.
Finally a tube preamp can help if it doesn't obscure too much detail, and having 'cool' cables makes a difference as well. They're not so bright and sizzly at the very top end so much as the upper mids/lower treble can be a bit exagerrated and/or harsh with poor recordings or equipment. A listening room on the dead side helps out as well...
Yes, a high current solid state amp with a 4ohm power rating double its 8 ohm rating and full stability into 2ohms is essential for the spkrs to sound anywhere near their potential. Actual rated amp power is more a function of your room size and listening level preferences.
Thiel has the serial # after which the new coaxes were installed by the factory - call them.
Finally a tube preamp can help if it doesn't obscure too much detail, and having 'cool' cables makes a difference as well. They're not so bright and sizzly at the very top end so much as the upper mids/lower treble can be a bit exagerrated and/or harsh with poor recordings or equipment. A listening room on the dead side helps out as well...