Audible Illusions Preamp


I would appreciate if someone can enlighten in chronological order which preamp in the Audible Illusions line that came out first and which is the current model from the L1, L2, 3A, 2C, (or any others I've missed). It would also be useful if someone can advise whether the sonic character is consistent throughout the range or there is a particular model that stands out from the rest in sound quality.

Thanks in advance.
ryder
L2 replaced L1. 3 replaced 2. 3A replaced 3. There were many variations on the 3. All the 3s have a similar sound.
The 3A is an outstanding preamp. There is a new model called the 3B. Art is a great designer. Customer Service has been the weakness of Audible Illusions.
Narrod, thanks for your brief but detailed information. It was much appreciated. I will be trying out one of these soon. Cheers.
Honestly, I felt that the 3a lacked dynamics. Try it out see what you think. I think you could do better, but I'm not sure what to recommend at that price point.