A/B testing DX200 vs DX220
Step one: Get up early whilst the house is quiet. Assemble daps and earphones.
Step two: Put identical amp modules in each (amp 8 x2).
Step three: match the gain.
DX200 low
DX220 middle
Step four: Volume match using spl meter.
Step five: Choose some generic test tracks.
Step six. Take a few photos.
Step seven. Start listening.
Step eight: Families small children wake up. A/B session aborted!
Step nine: Prepare breakfast.
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