I have a few amps with a "hard" and "quick"-sounding attack, like my Dual Showman Reverb. I'd like a pedal that smooths out the attack and maybe even gives it a little sag, like a tweed Deluxe. I know this may be impossible but thought I'd ask. A compressor seems like the obvious answer but I don't want that exaggerated "pop" you get with, say, a Dyna Comp...I'd like the opposite. Also, I wonder if a tweed amp emulation pedal would do the trick; say, a Catalinbread Formula 55. I like to play with some overdrive so a pedal like that would be good if it does what I'm looking for. Also, I much prefer pedals that work on batteries. Not a deal-breaker but I like to play with different pedals and not necessarily have them on a pedalboard.