1. audiobahn are one of the bset overall street pounders where $$$ is concerned (subs)
2. they do their rated power
3. thy have lost and lots and lots and lots and lots of chrome
4. they draw high current - they're not efficient (amps)
5. reliability? - just like a smokin D2, it depends on your luck - it may or it may not....but isnt the whole point that when u buy a piece of audio equipment u expect it2last??? hmmm......there'e plenty of choice for a good quality, reliable, efficient 4 channel amp - try rockford for example, very efficient, clean amps, or memphis, they're good too.