The Gibson 500t is a pickup that divides opinions probably more than any pickup I know. People either love it or hate it. Having tried it in a few guitars, I can see why. I personally love this pickup!
Fitted as standard in Gibson's standard Explorer and Flying V models, this pickup is voiced for metal. To add to that, it is also EXTREMELY hot! About the same output as a dirty Fingers, but more aggressive sounding. It is far louder than the EMG 81 for example. It also has the dynamic passive responsiveness that the EMG actives lack. Screaming leads and chunky rhythms are a breeze for the 500t. I would advise discretion with EQ when using this pickup. Highs and lows are accentuated, so it can get noisy/harsh if you add too much treble or presence on the amp.
Critics of the pickup say it is limited, compressed, harsh and only good for metal. I have found that when using a high quality volume pot, and careful EQ, this is an extremely versatile pickup!
It is not compressed, just hot. The compression happens in the front of the amp. Rolling back the volume allows all kind of picking control, and the pickup never gets too dark. I have used this pickup in a Party covers band, as well as a Death Metal Band. One of my all time top 5 pickups!