I finally got tired of all of the noise and harsh highs of my G&L so I installed an Aguilar OBP3 in it today. I've heard some say that they thought that the Aguilar pre's were a little noisy but compared to the G&L pre it's real quite. The slap tone is much better and the addition of the Mid control opened up the door to some real nice tones. The highs sound much better (more hi-fi sounding) and the pre's capable of much more defined lows. The pre seems pretty hot but it may just be the G&L P/U's. I wired the P/U's parallel since I didn't have room for the series/parallel sw. I think that I'll play it for a while and see how I like it. I can always drill another hole & install a 4th sw but I'm afraid that another sw would make things look real clutered.