thumburu ,
In case of synth sounds , it has to be perfect . It was Ok in 80s where the live instruments was used , but for synth - it has to be tuned very well , else yu will end up sounding like Marriage Party musicians !!
BTW , i personally don't think NL had bad audio quality , its just the choice of drum types which makes it sound a bit odd - the same goes for amma un pillai , but then it had a orchestral blast in one of the interludes !!