Paul was gaga over low impedance for both the lack of hum, and the fidelity they offered. Low impedance pickups are like low impedance mics, and use an XLR type of connector and wiring (as found on the LP Personal and LP Recording). The low impedance of the pickup also makes it less colorful. Thats something that died in the wool PAF folks would loathe, but Les thought that uncolored tone was better, and allowed the musician the opportunity to shape the tone envelope as he/she wanted. He played with low impedance pickups on his personal guitars right up to his death, but also did a few guest appearances with more recognizable Les Paul guitars (one or two TV commercials, some other promo stuff).
