The GK 700RB-II is rated for 480 watts at 4 ohms and 320 watts at 8 ohms. The Avatar cabs in question are both rated for 600 watts at 8 ohms. If I am not mistaken (and please correct me if I am), the GK is going to send a maximum of 240 watts to each 8 ohm cabinet. Is that enough for the Avatars? I have read some posts about "underpowering" lately. Should I concerned about that with this combination? I suppose I could pay more for the 1001RB-II, but I currently use a 300 watt amp that is more than loud enough for every situation I have been in. My band is always asking me to turn down. Therefore, I am very confident that the 700RB-II will provide plenty of headroom and would rather not spend the extra money if it isn't necessary. What are your thoughts? Anyone using this set-up or a similarly powered rig?