QUOTE (Reed @ Sep 8 2008, 02:42 AM)

Does anyone else hear a cold or digital sound with the “Active” pickups? I swear I can hear it in the background while playing, even though a tube amp. I think the passive pickups are better, you lose some signal "strength", but you gain smoothness, punch, that I cant hear with the active pickups.
Active pickups actually start out wound as a low output pickup, then an active circuitry is added - basically a preamp in your guitar - which is analog - that increases the output signal. Any pickup will color your tone depending on bobbin shape, wire gauge, wire coating, bottom plate material, type of magnets used (alnico 2, ceramic...) Active pickups color your tone more than passive pickups because the active circuitry now increases that passive coloring. So if the original low output design has decreased highs, the decreased highs will become more apparent after the active circuitry.
An additional problem with actives coloring your tone is that the preamp design can color your tone due to unbalanced inputs to the preamp. However, you can get actives that have balanced preamp inputs - Duncan Blackouts.
The interesting thing is - because you can design a pure gain circuitry with balanced inputs to the preamp - and you can start with a very low output pickup that has very balanced tone - you can design an active pickup that does not massively change your tone and actually gives you one of the widest frequency responses of any pickup.
EDIT: highest frequency response wasn't correct - I meant widest frequency response