The evo iv is a fantastic head. Really fantastic. It is a different beast to the 1,2 and 3, but has similar traits.
Any sound is possible once you get used to it. From funk, to r n b, to rock. I even had mine a bit Ampeg like tonight. Very punchy. Much more so than the others.
Easy carry, but good weight.
Volume and oomph for days.
As with all ashdowns the pre shape is the key. Personally for me pre shape OFF (ironically by pushing IN) works great in the mix.
To be honest it's a real steal at its usual rrp. If you can get it cheaper, even better.