"Trevor Wilson" wrote in
message
"Arny Krueger" wrote in message
...
"David Looser" wrote in
message
"Trevor Wilson" wrote

**DBTs are not metaphysical. They allow REAL
differences to be heard. Tell me about your
experiences with DBTs between MOSFET and BJT amps.
I'd be interested to know how these DBTs were conducted.
How many listeners did you use?, how were they
recruited, how much did they know about the purpose of
the test? etc.

In the end you've got to go to Australia to see Trevor
prove his point. I've been down this road with him
before in his anti-loop-feedback days.

**Perhaps you missed my last post to you.

Not at all.

Your suggest is actually less practical than me catching the next flight to
down under.

(True! read below!)

Here it is:

---
**I'll make it easy for you. Locate an old Phase Linear
400(b)

I don't have any, and don't know anybody who currently has one.

If I wanted to buy one, they seem to be going for about $500 on eBay.

and an early Perreaux amp.

I don't have any, and don't know anybody who even ever had one.

I don't even know what the model number would be, since you are so vague in
describing it.

I see that I could pick a fairly decent Perreaux amp up for $1,500 on eBay.

Northwest airlines will sell me a round trip ticket from DTW to SYD for
$1,295.

I have proven that your suggestion is even less practical than what I first
suggested.


Set up a DBT between
the two and ask the listeners what differences they feel
they can hear (if any). Let me know what results you
find. Both amps are plentiful and cheap, so the test
should be an easy one. Both amps use ****-loads of global
NFB, minimal bias current and primitive topology so the
only major differences are related to the output devices
used.


The real truth Trevor is that if all amplifiers sounded as different as you
claim, there would be a world of amps that would DBT different, not just an
early SS old-timer well-known for being a loser (whether true or not) and
some esoteric wunder-amp.