i think Lamm amps are among the best. what makes you say that the M1.1 is obsolete? did you mean simply that it was no longer a current model?
you didn't ask whether your WP7's will match well with the M1.1's......but i'll comment anyway. i think that the M1.1's might be a little short on dynamics to take full advantage of the potential of the WP7. OTOH it will sound great.....just not as enegetic and coherent on musical peaks and high SPL's as a higher current amp might be.
i have not heard the M1.2 so i can't comment on that.
you didn't ask whether your WP7's will match well with the M1.1's......but i'll comment anyway. i think that the M1.1's might be a little short on dynamics to take full advantage of the potential of the WP7. OTOH it will sound great.....just not as enegetic and coherent on musical peaks and high SPL's as a higher current amp might be.
i have not heard the M1.2 so i can't comment on that.