Mike, you might well be pleasantly surprised by a 300 BASH amp from partsexpress. Don't let the wattage numbers eat you up, it really is a fallicy, and so is the impedence value of your sub. Car stuff is designed around a near field environment and carrying the inherent volume levels that accompany them. The expansion to componants mean bigger supplies and more stuff. This is away from your post, but it can be night and day. The introduction of limitless AC power is reason enough.