Hi,

I own a T3EX, and as far as I know there is no difference what so ever between T1,T2 or T3 except that T3 is 61 key and T2 is 76 key and the T1 is 88 WEIGHTED key. All three have two program banks (100 sounds each bank) and one combi bank (100 sounds). All three have an 8 track sequencer with 20000 note capacity. Two midi outs, one midi through and one midi in. All have the 3.5 disk drive. All have the same sound engine, which is the same as the M1 except they added more samples to the T series and the disk drive and an extra bank over the M1.

If there is anything else you need to know, I will try to help and I am sure others would know at least what I know even more.
Good luck.

P.s. I am looking for T3 keys (my D2 key broke and looking for a replacement if anyone can help.)