Hallo. I've read lots of things about j-retro preamps and other onboard preamps to make an older instrument sound more alive or so... But I was wondering if an active bass can be made passive also, or if you can get one of those active/passive switches installed in your bass. I have an active (entry-level Status) 4-string bass which I like and play a lot, but a battery in my bass is just another thing that might stop working. Any ideas?