It depends on the amp.
My EVH sounds better to me without one. No matter what, it sounds too thin and grating every time I try boosting it. They nailed the gain stage filtering on that amp IMO — without a boost it is still very tight but some sag can be dialed in.
My 6505 needs one to sound right to me, but I can get good sounds without it too.
I *always* run an EQ in the loop though. All amps I’ve owned sound much better with that.
My EVH sounds better to me without one. No matter what, it sounds too thin and grating every time I try boosting it. They nailed the gain stage filtering on that amp IMO — without a boost it is still very tight but some sag can be dialed in.
My 6505 needs one to sound right to me, but I can get good sounds without it too.
I *always* run an EQ in the loop though. All amps I’ve owned sound much better with that.