Anyone got any experience with any? My new pre has a funny looking power jack on the back- so I thought I might try some internal 9v's.
yes, BUT the capacity isn't great. i've used the 220mAH ones and they suck.
i've read that Duracells alkalines are around 550mAH. now i use the Energizer Lithium 9V, which runs about 3.5X that of the Duracells.
you can find the 9v lithiums on Ebay for a very reasonable price.
marc