A Behringer Ultramizer (Digital Multiband Loudness Maximizer), it really sucked but when I sold it, I got more than I payed for it when I bought it, so it was worth it after all...!!!
My Behringer B2031A's. I did get a few years use out of them until one died.
THe big killer was my Tascam FW-1884. Not a bad unit on paper but a crappy design with the phantom power means that I now have 2 out of 8 pre-amps that no longer function. This is a known issue with Tascam but they don't believe it's thier problem even though it's well documented that it's a design flaw. In fact I would steer clear of tascam in general. Their customer support blows and they don't update there drivers for any product more than a year old. TASCAM used to be a great name in the 80's but they've really dropped the ball in my opinion.
Tascam DM-24 mixer (confusing), the Alesis 3630 compressor (unusable for most things), Tannoy System II monitors (honky), and the AKG C3000 microphone (usable for just a few things).