Lamm M1.2 versus Bat VK 600

There are some comparisons between the Lamms and the 600se here.
http://www.positive-feedback.com/Issue24/lamm12.htm

You would be better off changing speakers then amplifiers.

I recommend to check first how the Input range from the BAT will work with the output of the Lamm L2. When the BAT needs a strong input signal, well...
These Dynaudio speakers are not really sensitive, 90dB, 3-4 ohms, those datas cry for a powerful amp. But amp power and sonic quality can't be compared. The advice from S_r_audio is indeed something to think about. Can give you more long time satisfaction.

Better late than never... Not sure if you've made a decision yet, but before you jump ship, I'd examine or consider cabling. I have the same set up as you (L2 & M1.2). The addition of Transparent Audio cables made me a believer. Sonic orgasm.

So, what was your final decision?

i still have lamm amplifier.