Photos below are of the mini strap mount Treble Boosters that I made for Brian May 2006-2014. I have not made mini strap boosters since 2014 and have no plans to build any more.
BM strap mounted booster Nov 2014
LED power ON status and output level trimpot are at same end as output jack
2006 mini strap mount boosters:
BM Toronto 2006 Queen + PR tour
Mike Ryde strap mount treble booster from 2006 batch. photo credit: Mike Ryde
Mike Ryde strap and Fryer booster. photo credit: Mike Ryde