May I humbly suggest you check the archives. The KAV Krells are HT amps and to my ears are not the equall of their "audio" stuff. You will see differring views on impedance matching here on Audiogon, suffice to say that I am more conservative than most of my fellow Audiogoners on this matter. Personaly I feel the 600 Ohm out put of most AI stuff is more than I'd want for a Krell. I understand that Krell doesn't generally recommend tubes with their gear and may require modification to handle the potential DC leakage.
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