all tube circuits are not created equal. i have auditioned tube components which don't responsd to tube changes. thus, there is no way to predict which component will be morre affected by tube changes.
i don't agree that small signal tubes have more of an affect upon the sound of an amplifier. i have noted , using both vtl 120 amp, consonance amp and mapletree amp, that changing the output tubes have as much or more of an impact on the sound than changing the driver tubes.
i don't agree that small signal tubes have more of an affect upon the sound of an amplifier. i have noted , using both vtl 120 amp, consonance amp and mapletree amp, that changing the output tubes have as much or more of an impact on the sound than changing the driver tubes.