Thanks, Bassman10096. It has 20th Anniversary electronics. So each AXY pickup has a volume, low pass filter, and Q switch. There is a master volume and a pickup selector. The toggle near the five pin is a mono-stereo switch for the 1/4” jack (the jack is on the side). The five pin provides power and individual outputs for each pickup and plugs into an Alembic DS-5 box that provides the power and mono-stereo output. It has a brass nut, tailpiece, bridge, and sustain block. Also, the pickup rings are laminated ebony, maple, and Purple Heart, to match the red, white, and black colors of the bass body and edging. Alembic suggested the lighter colored pickups and I like the way they look on this bass. There is a back continuous wood cover over the electronics cavity made from the body wood and edged with ebony, and a wooden battery box inside (for use with the 1/4” jack), All parts were hand made by Alembic. All of the work was done by Alembic. Alembic really does a nice job. I’ve been playing it a bit the past week and just starting to get used to it, I love it