Babicz FCH 4 String Bass Bridge BK

There will be very subtle differences in tone between this bridge and whatever you have now unless your current bridge is terrible.

Plus: This bridge looks bling - fitting one screams "pimped bass". The main reason I bought a Babicz is that there are no grub screws to stick into your hand when you are playing / damping down at the bridge. (I could have achieved this with my old bridge by filing down the blunt ends of the grub screws.) The cam action string height setting is a breeze. On my Yamaha BB414 I could fit this bridge without any drilling - the BB414 factory bridge shares the same drill pattern and placement as the Babicz - which is the same as the Fenders, I believe. The string spacing is also perfect for my BB414.

Minus: My Yamaha's earth wire contact is off to the side between the D & G strings. This bridge is made from anodised aluminium and has a contact area on the back in the middle. To make earth contact in any other place you will need to get rid of the anodising at the contact point. I used a milling machine to skim off a 0.1mm deep patch between D & G. A file / sandpaper could be used instead - messier. This bridge is no good for through-hole basses like the Yamaha BB424. They need to supply several different lengths of spring, not just 2 short-ish and 2 long-ish.

Mounted on Fender Aerodyne Jazz Bass, perfekt fit, no drilling. Better than any Fender bridge (Basses that don't need vintage bridges).
So stabile and easy to adjust.
It has no string spacing adjustment, but I dont need it, was perfect for me as it is.

If I must say something about what I didn't like (Black painted one);
The paint could be better in some corners, not so shiny, and do you really need paint on the back at all? Little bit tricky to make sure that the ground cable touches the tiny not painted area.
At that price, I expect 100% finish.