I have the Blackhawks in two guitars - one an ash bodied thin bodied guitar and the other is an Ibanez S series with a mahogany body.
In the ash they are a bit toppy and less so in the mahogany (although the S series is not as full as most mahogany guitars would be and still sounds pretty bright.
I want to try these in a thicker guitar or a Les Paul now to see how the extra beef that the guitar has fits in with the Blackhawk pickups
The blackhawk is clear and bright sounding and really benefits a guitar that is beefy or dark IMO
The output is a whisker below the Rebel Yell from what I have found
Here they are in the ash body
http://youtu.be/uzLjU-g5h9UI have both the 6 and 7 string versions in stock if someone wants to buy from us :)