Listing this separately from my Pro Tube since I can't edit the title of my other post.
Here's the Quad IV, one of Warwick's more intriguing and underrated amps. This is a great bass amp that works 100% and is in excellent shape. The preamp packs one 12AX7 and two ECC83 tubes. It is a tone monster but sounds best for straight ahead rock (IMHO). Discontinued and hard to find.
Here's a review if you are curious
Quad IV - Bass Gear Reviews at TalkBass.com
asking $400 shipped.
Feel free to hit me up with any questions!