Ashdown ABM 300 Users?

[C-60 Bass]

Looking at one of these heads (Evo IV). Many years using the ABM 500 and just want to know how much output, headroom, volume available, thump difference there is - if any? I'm pretty sure the tone id similar but again, any differences? Probably would use it with a BF Super Twin, so a very efficient 4 ohm cab.

 

[gtirard]

Looking at one of these heads (Evo IV). Many years using the ABM 500 and just want to know how much output, headroom, volume available, thump difference there is - if any? I'm pretty sure the tone id similar but again, any differences? Probably would use it with a BF Super Twin, so a very efficient 4 ohm cab.

I don't know, but in theory and if everything else is equal, going from 500W to 300W, you only loose roughly 2 decibels.