"Stewart Pinkerton" wrote in message
...
: On Wed, 29 Mar 2006 20:27:29 +0200, "Ruud Broens"
: wrote:
:
: "Stewart Pinkerton" wrote in message
: .. .
: : On Wed, 29 Mar 2006 15:32:14 +0200, "Ruud Broens"
: : wrote:
:
: : you are also conveniently forgetting that - as is -, you have an input
: : impedance of about 5 Ohms ...
: :
: : See KISASS for the solution. Tubes use lotsa volts, BJTs use lotsa
: : milliamps, same thing in the end for the 'black box' solution.
:
: aha, now we're getting somewhere :-)
: so if someone now comes up with an SE pentode output stage, so no fb,
: that can do 12W out at 7 % THD, 88W dissipation,
: you'll agree that even the 2SA1216 can be beaten ?
: ok ;-)
:
: That'd be fine, as it would even more convincingly (for a tubie)
: demonstrate that triodes (and especially DHTs) just aren't what you
: want to use in a genuinely top-quality amplifier. Of course, you still
: come back to the basic that in a 'black box' with equal voltage gain,
: the BJT will win.
:
: --
:
: Stewart Pinkerton | Music is Art - Audio is Engineering

i think you'll find the combination
[ SS ]- Tube - SS, hybrid in that order
from input to output will deliver the highest
gain/distortion ratio,

which is what we want
no use having 10 times the gain comparing X with Y
when Y has 13 times more distortion,
is there ?

if distortion is your game
clean gain is the name,
:-)
Rudy