Hi, at ebay there are currently many older amplifiers offered by Hifonics. Would you like to know how to estimate the quality. I heard that the older things of Hifonics are better than the new ones, since they were still made in the USA, is that true? Search for a potent 2-channel stage for my X-ion 12″. I have in mind the following: Zeus VII: 2 x 300W rms @ 4 Ohm 2 x 450W rms @ 2 Ohm 1 x 900W rms @ 4 Ohm There are no switch functions mentioned in the offer. And what about the damping factor? Maybe one of you is familiar with it (I’m confident there is). …and is there something similar in the price range up to 250-300€, which would fit better? Thank you very much already