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WTB: 10k passive preamp

If you're strictly using a digital source, a cheap and easy solution could be to just throw a set of resistors or step-down transformers in the path that will allow for your highest desirable SPL, then you could make fine adjustments through digital volume. Yes, you're throwing bits away this way, but it won't be noticeable until you approach, say, a 40% attenuation...

Some may argue that you couldn't get a more 'pure and transparent' passive pre-amp than this.