[quote name='Magic Matt' timestamp='1410423801' post='2549220']
Side-note - rechargable NiMH last a lot longer than alkaline batteries on average. You can even fast-charge them during the gig so you start each set with a fresh... um... set.
[/quote]
That's true, but I find that when rechargeable batts go flat they do instantly with no warning. Normal alkaline batts have a gradual fail, thus giving me time between songs to change if need be.
PS: Thanks for all the replies everyone, lots of research to do although the Enabler looks ideal - If only it had a headphone volume control.