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Questions about tubes and gear that glows. FAQ

Most important is you control AB testing

I'm not saying double blind or any of that stuff, but be a bit scientific:

- Respect the nul hypothesis. It's always possible there's no real audible difference. Don't try and make one if it isn't there.

- Use a realistic scale for differences. Most will be quite tiny.

- Distinguish if a difference is repeatedly audible, e.g. different days. If so make changes

- Test with other listeners, get other feedback

- Use pieces of music where you can most easily tell differences. Acoustic music is particularly useful, as is voice and complex ensembles where you try and hear inner or low level parts which can be either audible or not

- Be honest about what you listen for and your priorities. In my case I'm a musician and I want instrumental timbre, vocal quality, and detail in complex passages. But others want soundstage, bass "slam" etc....

Edits: 02/02/17

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