RE: Tube revolution

Posted by morricab (S) on May 26, 2015 at 05:06:06

In Reply to: RE: Tube revolution posted by A.Wayne on May 19, 2015 at 16:23:43:

The first paragraph is so full of factual mistakes I didn't read the rest.

Fact on that is wrong...there is no such thing as a "highly linear" transistor. Maybe he MEANS that they they are close to theoretical transistor perfection but that is not linear by any means. As it has been noted by a number of writers on the subject, MOSFETS (theoretically) follow a quadratic function and bipolar transistors have an exponential transfer function. Both are far from linear.

Boyk and Sussmann show clearly that even with perfect transistors you will have substantial harmonic distortion even when running Class A, which Sanders clearly does not. For MOSFETS the situation of going from A to B is much worse than for bipolars, which look kind of crappy either way. MOSFETS in Class A are pretty clean...until you add feedback and then weird things happen. MOSFETS in B are ugly, with or without feedback.

Given that Sanders either doesn't really know how transistors work or is speaking marketing speak from the get go doesn't inspire educated reading.

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Follow Ups Full Thread

Topic - Solid-State Preamps late 80s - better than tubes ? - J. Phelan 08:56:32 05/14/15 (22)

"Tubes are better?" Philosophical ramble... - mr.bear 11:59:32 05/16/15 (5)

RE: "Tubes are better?" Philosophical ramble... - jimmycj 16:15:03 05/26/15 (1)

RE: "Tubes are better?" Philosophical ramble... - A.Wayne 18:36:27 05/26/15 (0)

to quote "silent weapons for quiet wars" - bullethead 16:03:36 05/16/15 (2)

RE: to quote "silent weapons for quiet wars" - zako 11:28:02 05/17/15 (1)

Hmm, funny the math is dead on accurate and correct, perhaps over your head? - Cleantimestream 11:49:27 06/21/15 (0)

RE: Solid-State Preamps late 80s - better than tubes ? - AudioSoul 08:59:18 05/16/15 (0)

RE: Solid-State Preamps late 80s - better than tubes ? - fantja 08:53:35 05/16/15 (0)

Tube revolution - morricab 11:20:11 05/15/15 (9)

RE: Tube revolution - Disbeliever 06:59:01 05/20/15 (0)

RE: Tube revolution - A.Wayne 18:13:12 05/15/15 (1)

RE: Tube revolution - Tubegroover 20:02:43 07/02/15 (0)

RE: Tube revolution - J. Phelan 13:05:24 05/15/15 (5)

RE: Tube revolution - morricab 05:25:13 05/18/15 (4)

RE: Tube revolution - A.Wayne 16:23:43 05/19/15 (3)

RE: Tube revolution - morricab 05:06:06 05/26/15 (2)

RE: Tube revolution - A.Wayne 08:19:47 05/26/15 (1)

RE: Tube revolution - morricab 06:22:09 05/27/15 (0)

RE: Solid-State Preamps late 80s - better than tubes ? - RedM 18:52:06 05/14/15 (1)

RE: Solid-State Preamps late 80s - better than tubes ? - J. Phelan 06:35:03 05/15/15 (0)

That's odd considering... - E-Stat 11:10:03 05/14/15 (0)

If you use Stereopyle as a reference . . . check out TAS. /nt\ - Opus 33 1/3 09:18:33 05/14/15 (0)

Follow Ups

RE: Tube revolution - morricab 05:06:06 05/26/15 (2)

RE: Tube revolution - A.Wayne 08:19:47 05/26/15 (1)

RE: Tube revolution - morricab 06:22:09 05/27/15 (0)

RE: Tube revolution

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