Bob, definitely buy the Rogue Magnum Tempest on this site if it's still available. I bought it and I replaced the 12AX7 and 12AU7 to Mullard and Phillip NOS tubes respectfully. I am driving pseudo efficient speakers (88db, 4ohm/8ohm). My bass module is 4 ohm and my mid/tweeter is 8ohm with a jumper cable between the two. I have the Rogue on the 8ohm tap and it sounds great. Especially after putting those NOS tubes in there.
