So if you're like me, then you perhaps you were looking for a cheap balanced equalizer just to do some basic equalizing and hopefully to convert those unbalanced lines to balanced at the same time.

Unfortunately, what they do not tell you except in the engineering specs is that "The output section shall have two outputs—balanced XLR and impedance balanced 1/4" TRS jacks."

Impedance balanced means that there's no differential signal in the line (the mirror copy that helps with noise rejection). In other words only the XLR outs are truly balanced. The 1/4" jacks are using a faux-balancing technique.

I verified this with an oscilloscope. Unless you are absolutely sure that you will only use the XLR jacks, then it's not worth it. It will add objectionable sounds to your audio.

Get an EQ that doesn't cut corners!

I purchased my SR231QXLR second hand from a client whom I've worked with for years. It sounds just as nice as it did from day 1, sliders are responsive, and does not add excessive noise with in my live setups or in our TV studio. Minor things to nit-pick: Would like a larger output meter per channel, and the power switch is confusing at first for those not familiar with the layout.

This unit will add one or more many different kinds of hums and/or buzzes to your setup depending upon the setting of the eq. Also note that the two channels are not balanced very well with each other.

Have owned this EQ for less than a year and one channel went dead. EQ was a piece of junk from the start. Will never buy a DOD product again. Your better to just spend the extra money and buy a good product. Stick with DBX their about the best out on the market.

Thing EQ is good for bass, guitar, live sound, recording. Everything. I'm useing mine with bass with an ampeg 4 pro through crate 4x10 and 1x15. It cleans up everything thing. I thought the 4 pro was amazing than hooked up the eq my friend just had for some reason and it made it sound even better.