I would like to see a good shelving EQ with fixed high and low freqs (I agree with Wiggy here lows 60, 80, 110, 200 highs
5K, 8K, 10k *maybe 10.5 instead*, 12k), simple sweepable freq / fixed Q parametric for the mids and an output tranny.
THAT would rock my world.
If you (or someone else) made that as an affordable and good sounding DIY kit I am 100% positive that I would end up buying 11 to fit a whole OSA rack.
100% positive as long as it had the features above and it sounded good, no question in my mind.
As a matter of fact if you offered that as a product I would buy my first this afternoon.
And as a matter of fact I have such a strong feeling that this would be such a hit that I would be willing to talk to you about becoming a financial / business partner to get this solution off the ground.... honestly I think it would be that popular.