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Audio and Video Talk
The Vintage Audio Section
My Sansui vintage valve amplifiers
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<blockquote data-quote="charles" data-source="post: 501360" data-attributes="member: 2759"><p>The British made valve amplifiers that too me is much better than a Leak 12.1 is the PYE PF 91 triode strapped valve amplifier.</p><p></p><p>This is a probably the only commercial vintage amplifier that near utilized the Williamson circuit topology ie:</p><p>ECC 33 double triode</p><p>ECC 35 double triode</p><p>GZ 32</p><p>KT 66 (x2) </p><p></p><p>This amplifer has settings for damping factor (0 to infinity). Frequency response: Substantially flat from 2 c/sec to 160 kc/sec. Information from its original manual. </p><p></p><p>The preamplifier is the PF91A and uses two ECC 40 double triodes.</p><p></p><p>Very difficult to get a pair with its preamplifers as these were used as mono amplifiers.</p><p></p><p>I have asked GMaestro to post the photos for me.</p></blockquote><p></p>
[QUOTE="charles, post: 501360, member: 2759"] The British made valve amplifiers that too me is much better than a Leak 12.1 is the PYE PF 91 triode strapped valve amplifier. This is a probably the only commercial vintage amplifier that near utilized the Williamson circuit topology ie: ECC 33 double triode ECC 35 double triode GZ 32 KT 66 (x2) This amplifer has settings for damping factor (0 to infinity). Frequency response: Substantially flat from 2 c/sec to 160 kc/sec. Information from its original manual. The preamplifier is the PF91A and uses two ECC 40 double triodes. Very difficult to get a pair with its preamplifers as these were used as mono amplifiers. I have asked GMaestro to post the photos for me. [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
My Sansui vintage valve amplifiers
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