Keep in mind the most significant difference (with your application) is probably the 568.1 vs 568.2 2.5beta firmware.

It does not pay to upgrade a 568.1 (even if available which I don't think it is) because it would cost more to upgrade than you can find a 568.2 for.

I also find it strange that someone would try to bargain shop on a 568.1 vs 568.2 with a $25K Preamp and 100K-ish worth of speakers. My head is sore I've been scratching it so much with this whole idea. crazy


- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
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