[Juan Nicola] has taken inspiration from the musician hackers of old and re-purposed a reel-to-reel tape recorder into a tape-echo for his guitar with a built-in valve amplifier (video in Spanish).

Can anyone tell me about tape loops? (The 2 hours I spent looking on the web yielded very poor results.) Specifically, I am trying to compare mid level (NAD T752 vs Marantz SR7300) receivers, but I ...