Forget the loaner amp, ask for a complete refund.
If I dropped $25,000 for a pair of brand new amps that were defective from day 1 and with no resolution in sight, I would not hesitate to go down to my dealer and demand a complete refund.
If I dropped $25,000 for a pair of brand new amps that were defective from day 1 and with no resolution in sight, I would not hesitate to go down to my dealer and demand a complete refund.