do not know about any of the pres (i use an ls2mk2) but i have 2 amp ones on my nht 2.5is. 1 amp drove them and they sounded much better than the ss haflers. i added the second (one per speaker) and it filled them out nicely (i bought them off net new for 550$ each). i have heard good things about the rogue eqipment too. for what it is worth they were a bargin and i am very happy with the sound.
