my Universal Audio LA 610 MKII finally arrived to today and i got a chance to compare it to my UA 6176 a little while ago. here's my take on the two of them: while the LA 610 MKII is really great sounding, i prefer the 6176 by quite a bit. both of the 610 preamp sections sound identical (which is awesome and the best i've ever heard), but, for me the 1176LN in the 6176 is ALOT better comp for a bass. the LA-2 type tube opto comp in the LA 610 is alot slower to respond and duller sounding than the FET based 1176LN. it distorts alot easier too (i already knew that it would). its not just that the 1176LN not only responds/tracks better, but it also adds a completely different type of punch and immediacy to the sound that the LA-2 doesn't. .............so, after spending about an hour A/B'ing the two, i would have to say that the LA 610 MKII is in a 3-way tie for second place (along with the Focusrite ISA 430 MK II and the Avalon VT737SP) of the 'big four' channel strips that i own. the Focusrite and Avalon are alot more versatile, having more control over the eq and comp settings, but the LA 610's preamp section on both of the UA's just seem to be a little better suited, and more natural sounding for an electric bass.