Version 4
SHEET 1 2072 840
WIRE 560 -96 304 -96
WIRE 624 -96 560 -96
WIRE 768 -96 688 -96
WIRE 1232 -96 992 -96
WIRE 1264 -96 1232 -96
WIRE 1360 -96 1328 -96
WIRE 1648 -96 1360 -96
WIRE 304 -32 304 -96
WIRE 992 -32 992 -96
WIRE 256 16 64 16
WIRE 768 16 768 -96
WIRE 944 16 768 16
WIRE 768 32 768 16
WIRE 1648 32 1648 -96
WIRE 560 48 560 -96
WIRE 1600 48 1520 48
WIRE 1360 80 1360 -96
WIRE 1872 80 1696 80
WIRE 1984 80 1872 80
WIRE 960 128 960 64
WIRE 960 128 880 128
WIRE 1872 128 1872 80
WIRE 64 144 64 16
WIRE 768 144 768 112
WIRE 768 144 656 144
WIRE 768 160 768 144
WIRE 880 160 880 128
WIRE 1232 160 1232 -96
WIRE 272 176 272 64
WIRE 1984 240 1984 80
WIRE 64 288 64 224
WIRE 272 288 272 256
WIRE 272 288 64 288
WIRE 336 288 272 288
WIRE 432 288 336 288
WIRE 560 288 560 128
WIRE 560 288 512 288
WIRE 768 288 768 240
WIRE 832 288 768 288
WIRE 880 288 880 240
WIRE 880 288 832 288
WIRE 1088 288 880 288
WIRE 1232 288 1232 240
WIRE 1232 288 1168 288
WIRE 1360 288 1360 160
WIRE 1408 288 1360 288
WIRE 1520 288 1520 48
WIRE 1520 288 1488 288
WIRE 1648 288 1520 288
WIRE 1872 288 1872 208
WIRE 1872 288 1728 288
WIRE 336 320 336 288
WIRE 1232 336 1232 288
WIRE 64 352 64 288
WIRE 768 352 768 288
WIRE 832 352 832 288
WIRE 1872 352 1872 288
WIRE 1360 416 1360 288
WIRE 560 432 560 288
WIRE 768 480 768 432
WIRE 1872 480 1872 432
WIRE 1872 480 1696 480
WIRE 1984 480 1984 320
WIRE 1984 480 1872 480
WIRE 1520 512 1520 288
WIRE 1600 512 1520 512
WIRE 336 528 336 400
WIRE 960 528 960 128
WIRE 1520 560 1520 512
WIRE 656 576 656 144
WIRE 656 576 352 576
WIRE 768 576 768 560
WIRE 944 576 768 576
WIRE 304 688 304 624
WIRE 560 688 560 512
WIRE 560 688 304 688
WIRE 640 688 560 688
WIRE 768 688 768 576
WIRE 768 688 704 688
WIRE 992 688 992 624
WIRE 1232 688 1232 416
WIRE 1232 688 992 688
WIRE 1264 688 1232 688
WIRE 1360 688 1360 496
WIRE 1360 688 1328 688
WIRE 1648 688 1648 528
WIRE 1648 688 1360 688
FLAG 64 352 0
FLAG 832 352 0
FLAG 1520 560 0
SYMBOL Misc\\triode 304 16 R0
SYMATTR InstName U1
SYMATTR Value ECC88
SYMBOL Misc\\EuropeanResistor 256 160 R0
SYMATTR InstName R3
SYMATTR Value 1.2K
SYMBOL voltage 528 288 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 39 2 VRight 2
WINDOW 3 44 77 VRight 2
SYMATTR InstName V1
SYMATTR Value 330
SYMBOL Misc\\EuropeanResistor 544 32 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL Misc\\EuropeanResistor 320 304 R0
SYMATTR InstName R4
SYMATTR Value 1.2K
SYMBOL Misc\\triode 304 576 R180
SYMATTR InstName U2
SYMATTR Value ECC88
SYMBOL Misc\\EuropeanResistor 544 416 R0
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL voltage 64 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 0.42 1K)
SYMBOL Misc\\EuropeanResistor 752 144 R0
SYMATTR InstName R10b
SYMATTR Value 15K
SYMBOL Misc\\EuropeanResistor 752 16 R0
SYMATTR InstName R10
SYMATTR Value 270K
SYMBOL cap 688 -112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 220n
SYMBOL Misc\\EuropeanResistor 752 464 R0
SYMATTR InstName R11
SYMATTR Value 270K
SYMBOL cap 704 672 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 220n
SYMBOL Misc\\EuropeanResistor 752 336 R0
SYMATTR InstName R11b
SYMATTR Value 15K
SYMBOL Misc\\triode 992 16 R0
SYMATTR InstName U3
SYMATTR Value 6SN7
SYMBOL Misc\\triode 992 576 M180
SYMATTR InstName U4
SYMATTR Value 6SN7
SYMBOL Misc\\EuropeanResistor 864 144 R0
SYMATTR InstName R13
SYMATTR Value 1K
SYMBOL voltage 1184 288 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 39 2 VRight 2
WINDOW 3 44 77 VRight 2
SYMATTR InstName V3
SYMATTR Value 400
SYMBOL Misc\\EuropeanResistor 1216 144 R0
SYMATTR InstName R12
SYMATTR Value 47K
SYMBOL Misc\\EuropeanResistor 1216 320 R0
SYMATTR InstName R5
SYMATTR Value 47K
SYMBOL Misc\\triode 1648 80 R90
WINDOW 0 22 -78 VRight 2
WINDOW 3 72 -33 VRight 2
SYMATTR InstName U5
SYMATTR Value 6C33C
SYMBOL Misc\\triode 1648 480 M270
WINDOW 0 22 -78 VRight 2
WINDOW 3 72 -33 VRight 2
SYMATTR InstName U6
SYMATTR Value 6C33C
SYMBOL voltage 1504 288 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 39 2 VRight 2
WINDOW 3 44 77 VRight 2
SYMATTR InstName V4
SYMATTR Value 110
SYMBOL voltage 1744 288 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 39 2 VRight 2
WINDOW 3 44 77 VRight 2
SYMATTR InstName V5
SYMATTR Value 250
SYMBOL Misc\\EuropeanResistor 1344 64 R0
SYMATTR InstName R18
SYMATTR Value 180K
SYMBOL Misc\\EuropeanResistor 1344 400 R0
SYMATTR InstName R19
SYMATTR Value 180K
SYMBOL cap 1328 -112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C8
SYMATTR Value 470n
SYMBOL cap 1328 672 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C9
SYMATTR Value 470n
SYMBOL ind2 1856 112 R0
SYMATTR InstName L1
SYMATTR Value 1.2
SYMATTR Type ind
SYMBOL ind2 1856 336 R0
SYMATTR InstName L2
SYMATTR Value 1.2
SYMATTR Type ind
SYMBOL res 1968 224 R0
SYMATTR InstName Rlast
SYMATTR Value 600
TEXT 304 824 Left 2 !.inc koren_tubes.cir
TEXT 304 784 Left 2 !.tran 0 20m 15m
TEXT 1832 40 Left 2 !K1 L1 L2 1