DI-E : Excellent passive DI box!

I bought one of these to test, because I couldn't believe how cheap they were.

Plugged something in, and it sounds fine. These aren't esoteric devices that add "magic" to anything that passes through. They make an unbalanced 1/4" jack into a balanced XLR.

Despite being transformer-coupled, the low-frequency transmission is excellent. My mixing desk (capable of +22dBU output) didn't cause any saturation distortion in the transformer - I had to find a fairly large power amp and apply 20Hz sine waves before any distortion showed up.

I was very impressed with the tests, so I bought lots more and keep them for festival stages. They work every time (no active electronic circuitry to go wrong) and never degrade the sound.

That's all I can ever ask of a DI box.