Kind of. So the 101b all have the same features, BUT...some have a few additional features. These are class A/AB switch, half power switch. Also, any of them after 2004 will have a little more gain, but also more compression.
The 101b that will sound different is the white chassis one with the cab select.
To simplify, if you took a new 101b and one that was 12 years old would they have the same features and sound more or less the same? Yes.
