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Technical and scientific discussion of amps, cables and other topics.

I don't completely agree with you

Bottom line, this is a hobby. Yes, scientific methods would be welcome, but in reality, these are time consuming and labor intensive.

If you believe, as I do, that amplifier differences only really show up under extended weeks of listening, then you cannot depend on a simple A/B test. It would be entirely possible to set up a long term amplifier comparison blind test, but again it's a big effort.

Now I replaced one tube amp with another and the results were immediately audible. The 2nd amp has twice as much rated power. Is this the whole difference? Could be. But the point is, with big things like amps, you rarely get identical specs in any case. I also have an old Hafler with the same rated power as my current tube amp, but it sounds rather poor into the same load.



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