I just purchased a new KAV 1500 for just under 5,000.00. It is alot of amp for the money and sounds fine. I have never known Krell to make a bad amp. I have a set of Krell Kas-2s for my music only system, but I have not done a side by side test with the same speakers to see if there is much of a difference. Let me know what you find out. You can find new KAV 1500s on E-bay, but the reserve is usually 4999.00. schange@swbell.net