* SPICE netlist
Q4 N011 P001 N007 0 BC557B
Q5 N012 P002 N008 0 BC557B
R4 V+ N002 2.2k
R9 N009 N010 8k
R10 N010 OUT 120
Q2 V+ N002 N004 0 NPN
Q3 V+ N004 OUT 0 NPN
R11 N002 N004 8k
R12 N004 OUT 120
Q6 V- N010 OUT 0 PNP
Q7 V- N009 N010 0 PNP
Q1 N009 N011 N013 0 BC547C
C1 N009 N011 10p
D1 P003 P004 1N4148
D2 P004 P005 1N4148
D3 P005 N009 1N4148
D4 N003 P003 1N4148
D5 N002 N003 1N4148
R13 N006 N007 50
R14 N006 N008 50
R16 N013 V- 56
Q8 N011 N012 V- 0 BC547C
Q9 N012 N012 V- 0 BC547C
R1 N005 0 1k
Q10 N006 N005 N001 0 BC557B
R2 V+ N001 150
Q11 N005 N001 V+ 0 BC557B
Q12 N011 In+ P001 0 BC557B
Q13 N011 In- P002 0 BC557B

* LTspice schematic (.asc)
Version 4.1
SHEET 1 944 736
WIRE -392 -352 -424 -352
WIRE -264 -352 -392 -352
WIRE 8 -352 -264 -352
WIRE 376 -352 8 -352
WIRE -392 -304 -392 -352
WIRE 376 -304 376 -352
WIRE 376 -304 264 -304
WIRE -264 -256 -264 -272
WIRE -264 -256 -328 -256
WIRE 8 -256 8 -272
WIRE 168 -256 8 -256
WIRE 200 -256 168 -256
WIRE 376 -240 376 -304
WIRE -264 -224 -264 -256
WIRE 8 -192 8 -208
WIRE 264 -192 264 -208
WIRE 312 -192 264 -192
WIRE -392 -176 -392 -208
WIRE -328 -176 -392 -176
WIRE 168 -112 168 -256
WIRE 264 -112 264 -192
WIRE 264 -112 248 -112
WIRE 280 -112 264 -112
WIRE 376 -112 376 -144
WIRE 376 -112 360 -112
WIRE 392 -112 376 -112
WIRE -264 -80 -264 -128
WIRE -264 -80 -344 -80
WIRE -200 -80 -264 -80
WIRE 392 -64 392 -112
WIRE 472 -64 392 -64
WIRE -344 -48 -344 -80
WIRE -200 -48 -200 -80
WIRE -344 80 -344 32
WIRE -200 80 -200 32
WIRE 8 96 8 64
WIRE 120 96 8 96
WIRE 8 144 8 96
WIRE 280 176 264 176
WIRE 296 176 280 176
WIRE 392 176 392 -64
WIRE 392 176 376 176
WIRE -56 192 -56 96
WIRE 392 208 392 176
WIRE -344 224 -344 176
WIRE -344 224 -408 224
WIRE -136 224 -344 224
WIRE -56 224 -56 192
WIRE -56 224 -136 224
WIRE -200 240 -200 176
WIRE -200 240 -264 240
WIRE -72 240 -72 176
WIRE -344 256 -344 224
WIRE -200 256 -200 240
WIRE 280 256 280 176
WIRE 328 256 280 256
WIRE 8 272 8 240
WIRE 280 272 280 256
WIRE -264 304 -264 240
WIRE -264 304 -280 304
WIRE 120 320 120 96
WIRE 184 320 184 176
WIRE 184 320 120 320
WIRE 216 320 184 320
WIRE -344 368 -344 352
WIRE -344 368 -360 368
WIRE -200 368 -200 352
WIRE -200 368 -344 368
WIRE 8 368 8 352
WIRE 8 368 -200 368
WIRE 280 368 8 368
WIRE 392 368 392 304
WIRE 392 368 280 368
FLAG -424 -352 V+
IOPIN -112 -336 In
FLAG -360 368 V-
IOPIN -48 384 In
FLAG -472 176 In+
IOPIN -160 192 In
FLAG -72 240 In-
IOPIN 240 256 In
FLAG 472 -64 OUT
IOPIN 784 -48 Out
FLAG -392 -96 0
SYMBOL pnp -408 176 M180
SYMATTR Value BC557B
SYMATTR InstName Q4
SYMBOL pnp -136 176 R180
SYMATTR Value BC557B
SYMATTR InstName Q5
SYMBOL res -8 -368 R0
SYMATTR InstName R4
SYMATTR Value 2.2k
SYMBOL res 168 160 M90
SYMATTR InstName R9
SYMATTR Value 8k
SYMBOL res 280 160 M90
SYMATTR InstName R10
SYMATTR Value 120
SYMBOL npn 200 -304 R0
SYMATTR InstName Q2
SYMBOL npn 312 -240 R0
SYMATTR InstName Q3
SYMBOL res 152 -96 R270
SYMATTR InstName R11
SYMATTR Value 8k
SYMBOL res 264 -96 R270
SYMATTR InstName R12
SYMATTR Value 120
SYMBOL pnp 328 304 M180
SYMATTR InstName Q6
SYMBOL pnp 216 368 M180
SYMATTR InstName Q7
SYMBOL npn -56 144 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL cap 8 80 R90
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL diode -8 -128 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode -8 -64 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode -8 0 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode -8 -192 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL diode -8 -256 R0
SYMATTR InstName D5
SYMATTR Value 1N4148
SYMBOL res -360 -64 R0
SYMATTR InstName R13
SYMATTR Value 50
SYMBOL res -216 -64 R0
SYMATTR InstName R14
SYMATTR Value 50
SYMBOL res -8 256 R0
SYMATTR InstName R16
SYMATTR Value 56
SYMBOL npn -280 256 M0
SYMATTR InstName Q8
SYMATTR Value BC547C
SYMBOL npn -264 256 R0
SYMATTR InstName Q9
SYMATTR Value BC547C
SYMBOL res -408 -192 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL pnp -328 -128 M180
SYMATTR Value BC557B
SYMATTR InstName Q10
SYMBOL res -280 -368 R0
SYMATTR InstName R2
SYMATTR Value 150
SYMBOL pnp -328 -208 R180
SYMATTR Value BC557B
SYMATTR InstName Q11
SYMBOL pnp -472 224 M180
SYMATTR Value BC557B
SYMATTR InstName Q12
SYMBOL pnp -72 224 R180
SYMATTR Value BC557B
SYMATTR InstName Q13