Talk:DI unit
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Nice article. I've added a high quality picture of a passive DI box designed by Cyril Jones. In line with neutral tone, I won't grumble about the inclusion of the Behringer unit whatever I think of their designs. --DavidP 21:10, 6 July 2006 (UTC)
[edit] Impedance matching
They don't do impedance matching, which would make source and load impedances equal. An active DI box does buffering.
A passive DI box uses a transformer to make the impedances like each other, but doesn't make them equal. I don't know what to call this. I called it "impedance transformation" for now. — Omegatron 22:32, 8 December 2006 (UTC)