TWIN TRIODE GAIN FACTORS.
The table below gives the gain factors
for various twin triodes with the same pin-out. All of them are
drop in replacements. You may or may not like the way they sound
but it's safe to try them all. Have fun.
|
TUBE TYPE
|
GAIN TRIODE 1
|
GAIN TRIODE 2
|
FIL AMPS
|
|
12AD7
|
100
|
100
|
.45
|
|
12AE7
|
13 on pins 6,7,8
|
6.4 on pins 1,2,3
|
.45
|
|
12AT7
|
60
|
60
|
.3
|
|
12AU7
|
20
|
20
|
.3
|
|
12AV7
|
41
|
41
|
.45
|
|
12AX7
|
100
|
100
|
.3
|
|
12AY7
|
44
|
44
|
.3
|
|
12AZ7
|
60
|
60
|
.45
|
|
12BH7A
|
16.5
|
16.5
|
.3
|
|
12DW7 / 7247
|
100 on pins 6,7,8
|
20 on pins 1,2,3
|
.3
|
|
5751
|
70
|
70
|
.35
|