Mackie DL32R has very low mileage but picked up a high pitched squeal and had to replace it. It's a common issue that is easily fixable, and if you're handy you could fix it yourself, but the repair was quoted to me at $230 so that has been taken out of the price. Includes Dante card installed.
Mackie DC16 has the same usage and works great, it is just missing a slider cap and has some tape residue.