* SPICE netlist
MQ1 +V N010 N012 N012 IRFP240
MQ2 -V N020 N017 N017 IRFP9240
R1 OUT N017 .33
R2 N012 OUT .33
C1 OUT N016 100n
R3 N016 0 10
R4 N010 N009 470
R5 N020 N019 470
V1 +V 0 50
V2 0 -V 50
Q3 N009 N006 N005 0 MJE350
Q4 N006 N006 N004 0 MJE350
R6 +V N005 100
R7 N009 N019 890
Q5 N019 N023 N024 0 MJE340
R8 +V N004 100
R9 N024 -V 100
Q6 N022 N021 N024 0 MJE340
C2 N023 N019 18p
C3 N022 N021 18p
R10 N006 N022 10K
Q7 N023 N015 N008 0 MJE350
Q8 N021 N011 N008 0 MJE350
R13 N023 -V 3.9K
R14 N021 -V 3.9K
Q9 N008 N003 N001 0 MJE350
R15 +V N001 470
R16 N002 N001 1K
Q10 N003 N002 +V 0 MJE350
R17 N003 N007 10K
R18 N007 0 10K
C4 +V N007 47
R19 OUT1 N011 27K
R20 N011 N018 1K
C5 N018 0 100
C6 N015 0 330p
R21 N015 N014 2.2K
R22 N014 0 47K
C7 N014 N013 2.2
Vin N013 0 SINE(0 {V} 1K)
R23 OUT 0 8
R24 +V N011 3.67Meg
R25 N011 -V 6.1Meg
V3 OUT OUT1 ac 1
C8 OUT1 N011 3p
.tran 10m
;.ac oct 50 1M 10Meg ; plot V(out)/V(out1) to see 72 phase margin @ 950kHz
;.dc temp -55 125 1
;.noise V(out) Vin oct 10 10 20K
.options plotwinsize=0 numdgt=15 noopiter
.four 1K V(out)
+ Nr=0.796984 VAR=6.11596 IKR=0.10004 Isc=9.99914e-14 Nc=1.99995 RB=1.47761 IRB=0.2 RBM=1.47761 Re=0.0001 RC=1.42228
+ XTB=2.70726 XTI=1 Eg=1.206 CJE=1e-11 VJE=0.75 Mje=.33 TF=1e-09 XTF=1 VTF=10 ITF=0.01 CJC=1e-11 VJC=.75 MJC=0.33 XCJC=.9
+ Fc=0.5 CJS=0 VJS=0.75 MJS=0.5 TR=1e-07 PTF=0 KF=0 AF=1)
+ NR=1.03823 VAR=4.14543 IKR=.0999978 ISC=1.00199e-13 Nc=1.98851 RB=.1 IRB=0.202965 RBM=0.1 Re=.0710678 Rc=.355339
+ XTB=1.03638 XTI=3.8424 Eg=1.206 Cje=1e-11 Vje=0.75 Mje=0.33 TF=1e-09 XTF=1 VTF=10 ITF=0.01 Cjc=1e-11 Vjc=0.75
+ Mjc=0.33 XCJC=0.9 Fc=0.5 Cjs=0 Vjs=0.75 Mjs=0.5 TR=1e-07 PTF=0 KF=0 AF=1)
.param V=1.44 ; 100W RMS
.step oct param V 1m 1.44 2

* LTspice schematic (.asc)
Version 4
SHEET 1 1968 880
WIRE -136 -440 -392 -440
WIRE 8 -440 -136 -440
WIRE 104 -440 8 -440
WIRE 216 -440 104 -440
WIRE 376 -440 216 -440
WIRE 648 -440 376 -440
WIRE 728 -440 648 -440
WIRE -392 -424 -392 -440
WIRE 728 -424 728 -440
WIRE 104 -408 104 -440
WIRE 8 -376 8 -440
WIRE 216 -344 216 -440
WIRE 376 -344 376 -440
WIRE -392 -328 -392 -344
WIRE -280 -328 -392 -328
WIRE -56 -328 -200 -328
WIRE 728 -328 728 -344
WIRE -392 -312 -392 -328
WIRE 8 -264 8 -280
WIRE 8 -264 -328 -264
WIRE 8 -248 8 -264
WIRE 216 -248 216 -264
WIRE 376 -248 376 -264
WIRE 648 -216 648 -440
WIRE 296 -200 280 -200
WIRE 312 -200 296 -200
WIRE -136 -184 -136 -440
WIRE 8 -152 8 -168
WIRE 104 -152 104 -344
WIRE 104 -152 8 -152
WIRE -392 -136 -392 -216
WIRE -392 -136 -472 -136
WIRE -312 -136 -392 -136
WIRE 8 -136 8 -152
WIRE 216 -136 216 -152
WIRE 296 -136 296 -200
WIRE 296 -136 216 -136
WIRE 376 -136 376 -152
WIRE 504 -136 376 -136
WIRE 600 -136 584 -136
WIRE 104 -104 88 -104
WIRE 200 -104 168 -104
WIRE 648 -104 648 -120
WIRE -472 -56 -472 -136
WIRE -312 -56 -312 -136
WIRE 8 -40 8 -56
WIRE -824 -8 -984 -8
WIRE -744 -8 -760 -8
WIRE -680 -8 -744 -8
WIRE -568 -8 -600 -8
WIRE -536 -8 -568 -8
WIRE -232 -8 -248 -8
WIRE -136 -8 -136 -104
WIRE -136 -8 -232 -8
WIRE 88 -8 88 -104
WIRE 88 -8 -136 -8
WIRE 104 -8 88 -8
WIRE 200 -8 200 -104
WIRE 200 -8 184 -8
WIRE 296 -8 200 -8
WIRE 456 -8 296 -8
WIRE 648 -8 648 -24
WIRE 648 -8 536 -8
WIRE 808 -8 648 -8
WIRE 984 -8 808 -8
WIRE -984 8 -984 -8
WIRE -744 8 -744 -8
WIRE -568 8 -568 -8
WIRE 376 8 376 -136
WIRE 648 8 648 -8
WIRE 808 8 808 -8
WIRE 984 8 984 -8
WIRE -232 24 -232 -8
WIRE 216 40 216 -136
WIRE -136 88 -136 -8
WIRE 808 88 808 72
WIRE -984 104 -984 88
WIRE -744 104 -744 88
WIRE -568 104 -568 72
WIRE 648 104 648 88
WIRE 984 104 984 88
WIRE -232 120 -232 104
WIRE 376 120 376 88
WIRE 504 120 376 120
WIRE 600 120 584 120
WIRE 136 168 120 168
WIRE 216 168 216 120
WIRE 216 168 200 168
WIRE 376 168 376 120
WIRE 392 168 376 168
WIRE 472 168 456 168
WIRE 808 184 808 168
WIRE -232 200 -232 184
WIRE 216 200 216 168
WIRE 376 200 376 168
WIRE -472 248 -472 40
WIRE -472 248 -536 248
WIRE -312 248 -312 40
WIRE 120 248 120 168
WIRE 120 248 -312 248
WIRE 152 248 120 248
WIRE 472 248 472 168
WIRE 472 248 440 248
WIRE -312 280 -312 248
WIRE -472 296 -472 248
WIRE 216 312 216 296
WIRE 296 312 216 312
WIRE 376 312 376 296
WIRE 376 312 296 312
WIRE 296 328 296 312
WIRE 728 328 728 312
WIRE -472 424 -472 376
WIRE -312 424 -312 360
WIRE -312 424 -472 424
WIRE -136 424 -136 168
WIRE -136 424 -312 424
WIRE 296 424 296 408
WIRE 296 424 -136 424
WIRE 648 424 648 200
WIRE 648 424 296 424
WIRE 728 424 728 408
WIRE 728 424 648 424
WIRE -536 440 -536 248
WIRE 472 440 472 248
WIRE 472 440 -536 440
FLAG 808 184 0
FLAG 728 -328 0
FLAG 728 312 0
FLAG 8 -40 0
FLAG -232 200 0
FLAG -568 104 0
FLAG -744 104 0
FLAG -984 104 0
FLAG 808 -8 OUT
FLAG 984 104 0
FLAG 728 -440 +V
FLAG 728 424 -V
FLAG 296 -8 OUT1
SYMBOL nmos 600 -216 R0
SYMATTR InstName Q1
SYMATTR Value IRFP240
SYMBOL pmos 600 200 M180
SYMATTR InstName Q2
SYMATTR Value IRFP9240
SYMBOL res 632 -8 R0
SYMATTR InstName R1
SYMATTR Value .33
SYMBOL res 632 -120 R0
SYMATTR InstName R2
SYMATTR Value .33
SYMBOL cap 792 8 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res 792 72 R0
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL res 600 -152 R90
SYMATTR InstName R4
SYMATTR Value 470
SYMBOL res 600 104 R90
SYMATTR InstName R5
SYMATTR Value 470
SYMBOL voltage 728 -440 R0
SYMATTR InstName V1
SYMATTR Value 50
SYMBOL voltage 728 312 R0
SYMATTR InstName V2
SYMATTR Value 50
SYMBOL pnp 312 -152 M180
SYMATTR InstName Q3
SYMATTR Value MJE350
SYMBOL pnp 280 -152 R180
SYMATTR InstName Q4
SYMATTR Value MJE350
SYMBOL res 360 -360 R0
SYMATTR InstName R6
SYMATTR Value 100
SYMBOL res 360 -8 R0
SYMATTR InstName R7
SYMATTR Value 890
SYMBOL npn 440 200 M0
SYMATTR InstName Q5
SYMATTR Value MJE340
SYMBOL res 200 -360 R0
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL res 280 312 R0
SYMATTR InstName R9
SYMATTR Value 100
SYMBOL npn 152 200 R0
SYMATTR InstName Q6
SYMATTR Value MJE340
SYMBOL cap 456 152 R90
SYMATTR InstName C2
SYMATTR Value 18p
SYMBOL cap 200 152 R90
SYMATTR InstName C3
SYMATTR Value 18p
SYMBOL res 200 24 R0
SYMATTR InstName R10
SYMATTR Value 10K
SYMBOL pnp -536 40 M180
SYMATTR InstName Q7
SYMATTR Value MJE350
SYMBOL pnp -248 40 R180
SYMATTR InstName Q8
SYMATTR Value MJE350
SYMBOL res -488 280 R0
SYMATTR InstName R13
SYMATTR Value 3.9K
SYMBOL res -328 264 R0
SYMATTR InstName R14
SYMATTR Value 3.9K
SYMBOL pnp -328 -216 R180
SYMATTR InstName Q9
SYMATTR Value MJE350
SYMBOL res -408 -440 R0
SYMATTR InstName R15
SYMATTR Value 470
SYMBOL res -184 -344 R90
SYMATTR InstName R16
SYMATTR Value 1K
SYMBOL pnp -56 -280 M180
SYMATTR InstName Q10
SYMATTR Value MJE350
SYMBOL res -8 -264 R0
SYMATTR InstName R17
SYMATTR Value 10K
SYMBOL res -8 -152 R0
SYMATTR InstName R18
SYMATTR Value 10K
SYMBOL cap 88 -408 R0
SYMATTR InstName C4
SYMATTR Value 47
SYMBOL res 200 -24 R90
SYMATTR InstName R19
SYMATTR Value 27K
SYMBOL res -248 8 R0
SYMATTR InstName R20
SYMATTR Value 1K
SYMBOL cap -248 120 R0
SYMATTR InstName C5
SYMATTR Value 100
SYMBOL cap -584 8 R0
SYMATTR InstName C6
SYMATTR Value 330p
SYMBOL res -584 -24 R90
SYMATTR InstName R21
SYMATTR Value 2.2K
SYMBOL res -760 -8 R0
SYMATTR InstName R22
SYMATTR Value 47K
SYMBOL cap -760 -24 R90
SYMATTR InstName C7
SYMATTR Value 2.2
SYMBOL voltage -984 -8 R0
SYMATTR InstName Vin
SYMATTR Value SINE(0 {V} 1K)
SYMBOL res 968 -8 R0
SYMATTR InstName R23
SYMATTR Value 8
SYMBOL res -152 -200 R0
SYMATTR InstName R24
SYMATTR Value 3.67Meg
SYMBOL res -152 72 R0
SYMATTR InstName R25
SYMATTR Value 6.1Meg
SYMBOL voltage 552 -8 R90
SYMATTR InstName V3
SYMATTR Value ac 1
SYMBOL cap 168 -120 R90
SYMATTR InstName C8
SYMATTR Value 3p