push-pull phono preamplifier
Component tubeRectifierMJ issue:
5691 / 42 / 801A83Jan. 1980
5691 / 801App / RCA5083Aug. 1980
WE-102D / WE-VT52 / VT-52p p/ PX4274BNov. 1985
12A /12A / 801App / 801A83Nov. 1985
5691pp / WE-205Fpp / WE-205F83Oct. 1987
5691pp / RCA841pp / WE-300BWE-274ABook 1989
5691pp / NL50pp / 845WE-422AJan. 1993
5691 / EL156 / WE-300B83 Mar. 2002
5691 / 5692 / WE-VT-52 / STC-4300B GZ37 Aug. 2003

SE phono preamplifier
Component tubeRectifierMJ issue:
6ZDH3A / 76 / 76 / 2A35R4GYAug. 1977
569 1/ WE-311A / RCA5083Oct. 1978
5691 / EL34 / KT66GZ37Sep. 1979
5691 / EL3483Oct. 1988
5691 / RCA50 / RCA5083Nov.1991
5691 / EL34 / EL34GZ37Aug. 1992
5691pp / WE-264Cpp / 300BWE-274AJan. 1993
6GA4 / VV300 / VV300 / VV30083Sep. 1996
5691 / 845 / 84583Sep. 1997
5691 / 845 / 8455R4Oct. 1998
5691 / 6550A / 8455R4Feb. 1999
5692 / CV5112WE-422Jan. 2001
5691/ EL156WE-422May 2001
5691 / 5691 / WE-300BWE-422ASep. 2001
5691 / 56915Z4GJune 2006
ML6 / ML6/ ML6GZ37Jan. 2007
6SL7 / 6SN7-Jan. 2008
5691 / 8415R4April 2009
841 / 450TH5R4June 2009
12AT7 / 841 (WE300B : bleeder tube)5R4April 2010
5691 / WE-102D (RCA50 : bleeder tube)WE-249B (866A)June 2011

Power amplifier
Two channels amplifier
Combination phono preamp-power amplifier
Tone control and buffer amplifier


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Introduction
Index of Sakuma's works

Japanese Introduction / Japanese Index


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