Just got a used Tone Hammer from the tb classifieds (thanks, jhfishn!). Love it! I know the OBP-3 preamp very well & have used a bunch of Aggie' amps that I love, so I knew the tone would be cool. The only thing keeping me from pulling the trigger on one of these years ago was the lack of an unaffected (parallel) 1/4" output.
I don't want a di to color my signal to the amp, just the pa. So, a parallel, unity gain output before any eq or gain adjustments was a must
! Unfortunately, Aguilar didn't incorporate that into the Tone Hammer design. Well, I did it myself!
Pretty easy mod - the hardest part was removing the chassis screws! Had to drill those out! After that, pretty simple to link a 1/4" switchcraft jack & install it in the chassis.
guts removed & jack leads soldered & heatshrinked to input jack pc lugs:
jack installed after chassis drilled out, not a lot of space in there!
I would have liked to locate the extra jack on the top panel with the others, but there just wasn't enough room. This low-profile metal jack should be fine though!
Very happy with this DI!