push-pull combination preamp-power amplifier
Component tuberectifierMJ issue:
6SL7 / EL34 / EL34 / 2A35Z3Oct. 1980
6C4 / 6C4 / 6BQ5 / 6BQ5GZ37Jan. 1982
5691 / 5692 / WE-350B / PX2583Jun. 1986
801A / 801A / 801A / DA30pp / RCA5083Nov. 1986
5691 / 841(VT51)pp / 801A / RCA5083Aug. 1987
5691 / 5692 / WE-VT25A / WE300BWE274AJan. 1988
5691pp / 5692pp / WE-300B / WE-300BWE274AJun. 1988
5691 / EL34 / EL34 / EL34GZ34Apr. 1991
5691 / EL34 / E406N / 4683Jun. 1994
5691 / EL34 / 6G-B8GZ37+GZ34Sep. 1998
5691 / 5692 / WE-300B / CX350WE274A+RCA83Mar. 2002
5691 / 5692 / VT-52 / STC4300GZ37Aug. 2003
5691 / 845 / 845 / 845WE274A+RCA83Book 2006
6V6 / 845 / 6V6 5R4WGYJan. 2003
L63 / ML-6 / ML-6 / KT66 / KT66 GZ37Oct. 2018


SE combination preamp-power amplifier
Component tuberectifierMJ issue:
5691 / 42 / 42 / DA6083May 1979
5691 / 6AU6 / 37 / 2A35Z3Oct. 1981
12A / 12A / 12A / 12A / RCA50WE301AJan. 1982
5692 / 5692 / 6V6G / KT6683Jan. 1985
5691 / 801App / 801A / RCA5083Jan. 1985
WE101D / WE205F / WE205F / 300B / RCA5083May 1985
5691 / RCA1623 / RCA5083Nov. 1986
CV5112 / 7C5 / KT63 / 84583Oct. 1994
5691 / 5692 / VV300B / 8455R4Mar. 1998
5691 / 5692 / 845 / 8455R4Aug. 1999
5691 / 5692 / ML6 / 45 /DA305Y3Apr. 2003
5691 / EL156 / SV572-10 / WE-300BWE-422ADec. 2010
VT105 / VT105 / VT105 / VT105 / KT66 (ACP1 : bleeder tube) 5R4Sep. 2011
5691 / 5692 / KT66 /845 (For Crystal Turnover Cartridge) 5R4 Aug. 2017
5691 / 5692 / 845 / DA-30 5R4Apr. 2018


Paralell push-pull combination preamp-power amplifier
Component tuberectifierMJ issue:
6Z-DH3A / 37 / 37 / 42WE301AJuly 1982
5691 / ECC33 / KT66 / KT66GZ37Jun. 1986
5691 / ECC33 / 42 / 4683Nov. 1986

Phono preamplifier
Power amplifier
Two channels amplifier
Tone control and buffer amplifier
Stereo / Monoral converter

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