Re: Milliamp Question
From what I have been taught and told, and what seems to make sense to me, is that getting the proper voltage is what matters...you will only draw as many amps as the drum machine needs.
ie, if you have a 40W bulb, it will be drawing .33A (Power/Voltage=Amperage); if you have a 60W bulb, it will be drawing .5A; but no matter what bulb you use, it will still be 120V.
Nonetheless, when I left my adaptor for my digital set 1500 miles away, I went to Walmart and found a multiadapter (10 or so tips interchangable plug tips with switchable voltage/amperage ratings) for about $20. See if you can't find one of those that will work.
"When I hear music, I fear no danger. I am invulnerable. I see no foe."- Henry Thoreau