Ah. Yes, it would be nice to see some actual lab testing, but (1) most equipment is so good in the lab nowadays, and (2) measurements are widely ignored and/or ridiculed by the 'black magic school of engineering' folks, so it's getting less and less common.
Much of the 'information' distributed by the marketing side of this industry is truly sickening to me. Maybe I'd feel differently if I held stock in those companies.
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Charlie