Sound quality was pretty good. I'm playing through a Fender Bassman 50 head, and I'm playing with an Ibanez Blazer guitar. I have single coils, so I have to be really careful with my EQ curve, because if I don't do it right, I'll get a lot of hum and fuzz. Overall, a really good sound for how cheap the pedal is. I bought it used for $30, and I can honestly say it was the best deal I've gotten on any of my pedals.
Reliability/Durability:
Not bad...not great. I can't afford to get backups, so I just treat it nicely. I had some problems with the footswitch, but I just fiddled around with it a bit and got it to work again (I didn't even have to take it apart). They deffinately could have used a better enclosure.
Ease of Use:
How can an equalizer be hard? If you honestly can't find the sound you like, or if you can't hear a difference in your sound when you're moving the sliders, you shouldn't be playing music. I love the fact that this thing has 8 sliders. You can get some really great sounds out of it, and tweak far more than you can with simpler EQ pedals.
Customer Support:
Never dealt with DOD. I have no idea how old this pedal is, since I bought it used. If the pedal stopped working, I think I would look up their technical information, but ultimately just buy a new one.
Overall Rating:
It's an EQ pedal. If you want your sound to change dramatically between each pedal, and you don't want extensive full control over your tone, levels, and dynamics, don't buy an EQ. If you like to be in control of your sound, this is deffinately a good, solid pedal with better features than some more expensive ones (8 sliders). Just be careful with it, and it'll do you right.