http://www.dbxpro.com/223XL/223XL.php
<LI class=features>XLR balanced ins and outs <LI class=features>Mode switch for stereo 2-way or mono 3-way operation <LI class=features>Low frequency summed (subwoofer) output <LI class=features>x10 range switch on both channels <LI class=features>40Hz high pass (low cut) filter both channels <LI class=features>Phase reverse switch on all outputs <LI class=features>Individual level controls on all outputs <LI class=features>24dB per octave Linkwitz-Riley filters (the professional standard) <LI class=features>Stereo/Mono status LEDs indicate the selected mode <LI class=features>dbx® 2 year parts and labor as standard <LI class=features>CSA NRTL/C approved <LI class=features>CE compliant
I have recently purchased the above unit to evaluate an entry level LR 4th order analogue active crossover and for use with seperate sub woofer crossover for a new surround sound project.
It has a sturdy chassis and solid feel, quality XL sockets and dedented level controls. There are a few useful feature the most of which is push button phase reversal for both high and low pass filterr including those listed above.
RRP is AUD $420 I got it for AUD$299.
To sum up, simple and easy to use. Plenty of headroom, reasonably clean without too much a hint of electronic glare or brightness (like the JBL 5235 and some digital loudspeaker processors ) although it lacked the ultimate transparency and purity of a true SOA class A active crossover.
If you have mid range amps and signal/source / path this would be a good buy and a good entry point into biamping.