There's that, plus the fact that the RNC is STEREO and the RNLA is MONO.

It's not MONO according to the FMR spec sheet:

http://www.fmraudio.com/RNLAspecspage.htm

It's not MONO according to the FMR spec sheet:

http://www.fmraudio.com/RNLAspecspage.htm

My mistake...Icould've sworn...sorry!

To be very very specific, both units are Stereo OR Mono, but not Dual Mono...

To answer your question, yes the RNLA is more colorful than the RNC. But don't expect 5% THD, it's less than 3%. Both compressors are ridiculously inexpensive. Go Mark! 8-)

I know the RNC is unbalanced in and out.
And the RNLA is unbalanced in and balanced out.

Is there any trouble if I plug a unbalanced cable to the outputs of the RNLA?

I have to say that I already have a RNC andplan to buy a RNLA very very soon.
Currently I use an unbalanced octopair to plug the RNC to my soundcard (right now, I only use 4 of 8 ). So guess what...I plan to use my full unbalanced octopair to plug to my soundcard.

Is this possible about unbalanced cable to the balanced outputs???

Please, let me know.
Thanks.

any idea ?

Yes you can run your balanced outs to unbalanced.

You will have to modify/ make some cables though. Just make sure that the shield wire is disconnected at the unbalanced end, just leave it floating, and the two signal wires hook up the the tip and sleeve.

Or you could check out rane's website for a hook-up chart and a better explanation than mine.