Tube DIY Asylum

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RE: "Hazen Grid Mod"question

Posted by Paul Barker on May 4, 2022 at 00:15:15:
You learn a lot about yourself when you get a friend to blind test for you. Find someone you are confident in and you'll be surprised how much proud Papa syndrome, vested interest syndrome, and how much you 'perceive' it sounds better but you're wrong. Remove those influences and even some tube rolling is hocus locus (not all) but strip it to remove those bizarre influences that make our beliefs in what we're hearing and you learn a lot more.

I'd did this with Nick Gotham in my house with 212's of about 5 different manufacture all quite differently constructed and with gm70 graphite and also copper.

My mind tricked me that the taller with larger plate versions of v1505 sounded better than the shorter more common 212's. Clear as day all 212's sounded better than graphite gm70 and less clearly but marginally better than copper gm70.

It was at least 20 years ago, before vsac anyway. So I can't remember every detail. But Nick who was blind barely heard any difference but he found graphite gm70 least good. He could not hear the difference between any 212 versions and couldn't tell which was copper gm70.

I, knowing what we were hearing heard great differences!