MrFlibble

A compressor will effect your playing dynamics more than the volume. It will also increase the hum of your pickups a lot. If you simply want to get the output of your Strat up to the same level as your guitars with humbuckers, a plain level boost is a better option, or you should consider swapping to higher output pickups; there are many single coils on the market with output comparable to typical humbuckers.

As for the battery, it shouldn't be a problem. It's rare for on board effects to drain a battery in any more than 250 playing hours, so as long as you don't leave your guitar plugged in all day and night, you won't have to replace the battery often. You can usually time your battery change with a string change, so taking the pickguard off isn't much of an issue. You could also look at EMG's power supply pedals that allow you to power active systems withint he guitar using a battery outside of it.

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