Hi I'm pleased with the sound I haven't hooked up any subs yet I have 4 Bose 302 bandpass subs not real good but I use them on small gigs with 802-II's it's a nice portable system. I was looking at the Danley DTS-10 sub they sell kits for around $1200 and have talked to some that have them and they are very happy "True Thunder" was what was said to me by a fellow Forum member.I tlked to GPA and the recomended there 515-G8 woofer for the A7 but I'm using the Eminence Kappa C's very similar specs to the GPA 515-G8. The Kappa C specs on the Eminence website are the same as the 8 ohm Kappa A's not correct Parts Express has the correct specs not alot of difference . http://www.danleysoundlabs.com/produ...y-subs/dts-10/