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Audio and Video Talk
Vinyl
Where are the valve pre-amps and phono stages
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<blockquote data-quote="Ampdog" data-source="post: 215583" data-attributes="member: 144"><p>Darryl,</p><p></p><p>My guess would be that with time many owners found it more convenient (remote controls and such) to upgrade away from the original matching units to the semiconductor stuff available later and those got lost by the wayside.</p><p></p><p>Also, repeating my experience with Quad pre-amplifiers, for some very strange reason particularly the styrene capacitors used by many British makes at the time, drifted off-value to the extent that frequency balance became notably distorted - that perhaps the reason why the Leak Varislopes got bad reviews. Then again, are you talking about recent reviews or reviews done at the time (1950s)? Although they were not superlative*, I would not regard the Varislopes as poor in any way.</p><p></p><p>*<span style="font-size: 11px">The phono equaliser design could have been done with an improved noise figure by using a double triode instead of a pentode, it would have benefitted from a higher h.t. than only 135V, and in later times with dc on heaters :blah:</span></p></blockquote><p></p>
[QUOTE="Ampdog, post: 215583, member: 144"] Darryl, My guess would be that with time many owners found it more convenient (remote controls and such) to upgrade away from the original matching units to the semiconductor stuff available later and those got lost by the wayside. Also, repeating my experience with Quad pre-amplifiers, for some very strange reason particularly the styrene capacitors used by many British makes at the time, drifted off-value to the extent that frequency balance became notably distorted - that perhaps the reason why the Leak Varislopes got bad reviews. Then again, are you talking about recent reviews or reviews done at the time (1950s)? Although they were not superlative*, I would not regard the Varislopes as poor in any way. *[SIZE=11px]The phono equaliser design could have been done with an improved noise figure by using a double triode instead of a pentode, it would have benefitted from a higher h.t. than only 135V, and in later times with dc on heaters :blah:[/SIZE] [/QUOTE]
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Audio and Video Talk
Vinyl
Where are the valve pre-amps and phono stages
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