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Best bass mod ever for you?

If you’re looking for permission to mod your bass, you’ll find lots of encouragement here.

Any aspect of a bass is fair game. Try whatever. If you get an idea from the forum, get on it and make it so. A tiny example of that is replacing the Fender headstock button with something non-resonant. Takes out the distinctive Fender ring and evened out the G string dead spot.

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You’ll never know if you don’t try.
Tell me more! I have two Fenders and two Music Mans (Music Men?) that might just need some of that action...
 
In the nineties I had a MIM jazz that had excellent playability. I eventually updated the pickups to the ‘64 Vintage Jazz, and then added an Aguilar OBP2. That bass satisfied my GAS for almost 10 years. In fact I was almost disappointed when I later bought a Fender American Jazz. You could tell it was better built, but it didn’t produce the tonage like the MIM with mods. At least the American Fender resold for a decent price, which the MIM most likely would not.
 
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A Lane Poor pickup and Aguilar preamp in a late-90s Fernandes Tremor standard. Dunlop Straplocks. Hipshot and Badass bridges. Japanese Fender TBX tone pots on passive basses. Hipshot ultralight tuners on basses that don't come with them or better tuners. Rosewood nut and saddle on acoustic fretless. Defretting my 1988 Japanese Jazz Bass Special. Nordstrand pickups in my Fenders.
 
Putting Audere Pre-Amps in some of my Jazz Basses. I really like the Audere + Notdstrand pickup combo

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Swapping parts so my Player P matches the Jazzmaster. Nothing crazy but one of my favorite mods I’ve done other than putting GZR’s in my other P. Those two are the most noticeable to me since I play these two basses a lot.

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I modded a cheap P once, with a Nord pickup and a Schaller bridge. The mod actually didn’t do much, but I wasn’t clear what I was trying to achieve, except to “upgrade.” :)

Now I think twice before modding. Haven’t done a mod since then (but I do buy nicer basses to begin with). Instead, I started assembling parts basses to test my “ideas.” Most of these ideas turn out to be stupid, sparing my main bass(es). But it’s a lot of fun.

Top (potential) mods:
  1. String change. While typically not considered a mod, it actually fundamentally changes how the bass sounds. Some strings are more expensive than other, “traditional” mods. I think this counts :)
  2. Mods that improve playability and/or setup-ability. Again, not necessarily your typical mod, but do what it takes. As far as I can tell, this is imo the most legit reason to change hardware (tuners, bridges)...
  3. Pickup change. Stick with the form (no routing), but go for a different design/architecture. Won’t do that much for a P bass, but many different designs come inside soapbar or MM shapes...
  4. Changes to passive electronics. They can do so much for so little money. Currently my favorite “mod”!
But yeah, think twice before you do it, especially if mods are irreversible. At some point, it’s IMO better to just consider getting a different bass.
 
I put a BadAss bridge on my Rickenbacker 4001 back in the late 1980s. The stock bridge was awful (and thoroughly debated here on TB). Back then, the BadAss was the only viable option. Today I probably would use the HipShot direct-replacement bridge. But I still have, play, and love that bass.

So now I find I prefer high-mass bridges. I bought the MIM Geddy Lee Jazz in part because it comes with a high-mass bridge. And I put a HipShot high-mass bridge on my Squier VM Jazz V; it really helped the B-string to be not-so-floppy.

Aside from strap locks, those are my only mods. (Note: I wouldn’t change a thing on my EBMM Sterling 4H.)