Combination preamp-power amplifier

push-pull combination preamp-power amplifier
Component tube	rectifier	MJ issue:
6SL7 / EL34 / EL34 / 2A3	5Z3	Oct. 1980
6C4 / 6C4 / 6BQ5 / 6BQ5	GZ37	Jan. 1982
5691 / 5692 / WE-350B / PX25	83	Jun. 1986
801A / 801A / 801A / DA30pp / RCA50	83	Nov. 1986
5691 / 841(VT51)pp / 801A / RCA50	83	Aug. 1987
5691 / 5692 / WE-VT25A / WE300B	WE274A	Jan. 1988
5691pp / 5692pp / WE-300B / WE-300B	WE274A	Jun. 1988
5691 / EL34 / EL34 / EL34	GZ34	Apr. 1991
5691 / EL34 / E406N / 46	83	Jun. 1994
5691 / EL34 / 6G-B8	GZ37+GZ34	Sep. 1998
5691 / 5692 / WE-300B / CX350	WE274A+RCA83	Mar. 2002
5691 / 5692 / VT-52 / STC4300	GZ37	Aug. 2003
5691 / 845 / 845 / 845	WE274A+RCA83	Book 2006
6V6 / 845 / 6V6	5R4WGY	Jan. 2003
L63 / ML-6 / ML-6 / KT66 / KT66	GZ37	Oct. 2018

SE combination preamp-power amplifier
Component tube	rectifier	MJ issue:
5691 / 42 / 42 / DA60	83	May 1979
5691 / 6AU6 / 37 / 2A3	5Z3	Oct. 1981
12A / 12A / 12A / 12A / RCA50	WE301A	Jan. 1982
5692 / 5692 / 6V6G / KT66	83	Jan. 1985
5691 / 801App / 801A / RCA50	83	Jan. 1985
WE101D / WE205F / WE205F / 300B / RCA50	83	May 1985
5691 / RCA1623 / RCA50	83	Nov. 1986
CV5112 / 7C5 / KT63 / 845	83	Oct. 1994
5691 / 5692 / VV300B / 845	5R4	Mar. 1998
5691 / 5692 / 845 / 845	5R4	Aug. 1999
5691 / 5692 / ML6 / 45 /DA30	5Y3	Apr. 2003
5691 / EL156 / SV572-10 / WE-300B	WE-422A	Dec. 2010
VT105 / VT105 / VT105 / VT105 / KT66 (ACP1 : bleeder tube)	5R4	Sep. 2011
5691 / 5692 / KT66 /845 (For Crystal Turnover Cartridge)	5R4	Aug. 2017
5691 / 5692 / 845 / DA-30	5R4	Apr. 2018

Paralell push-pull combination preamp-power amplifier
Component tube	rectifier	MJ issue:
6Z-DH3A / 37 / 37 / 42	WE301A	July 1982
5691 / ECC33 / KT66 / KT66	GZ37	Jun. 1986
5691 / ECC33 / 42 / 46	83	Nov. 1986