In One Ear, In the Other

With an apology to the hearing-impaired, headphones are required for this audio recording quiz.

I heard the effect in the recording before he pointed it out, but with the expectation there was a technical problem, I assumed a microphone was out of phase with the other mics. This is his follow-up entry.

DOuG pRATt in high school with a Pioneer SX-440 receiver, Garrard 40B turntable with Shure M91ED cartridge, Pioneer SE-20 headphones, and Realistic MC-1000 speakers.