audio research REF 150

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Bif, give it time and hang in there until it fully breaks in. I'm sure the upgrade is going to separate itself from the standard Ref5 and your upgrade investment will be well worth the money spent.
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It looks like it's about time for all of the reference series amps from ARC to be replaced by a new model if they keep to their 5-6 year new model intro as they have in the past.
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Flex2: I to have owned all of the AR Reference preamps except the Ref5 and anniversary model. Each one was excellent. But to my ears, each new incarnation was better. Pretty much, it comes down to a matter of preference.
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