Hellzero

This is a Tides bass made nearby in Luxembourg : https://tttides-guitars.com/

That's an electrical power source and technically a battery, but I wouldn't pick up an instrument with a super capacitor in it. Lithium batteries tend to explode, super capacitors do burn (overheating at very very high temperature in fact) very quickly if charging voltage exceeds the maximum voltage of the super capacitor... Unmastered technology is always an issue.

On Warwick's the bridge is earthed. That said, @chyc the sound you're after can only be achieved using piezo pickup(s). You could get an approximation of it with piezo saddles in the bridge and a dedicated piezo preamp in your own Warwick, but the cost will become prohibitive. Why not buy a second hand Ibanez SRH500F or an amazing Ibanez AFR (the new generation is only fretted, but you could have it defretted or use a plectrum to get that Steve Swallow tone on a fretted piezo equipped bass). Concerning Marco's tone and solo ability, it's easy : listen to a lot of bebop soli as well as bebop walking bass lines and ... practice a LOT ! 😉 Monk Montgomery and Ray Brown II V I progressions are very good starting points (and ending points too). 🤦🏻‍♂️😂

Urm, urm, since when an active system doesn't require some electrical power ? These are the usual acoustic guitar suspects...

Do you have a sound sample of what you call acoustic-like sounds, because it can be anything from a harsh ear bleeding tone to an organic double bass tone ? And what bass would like to fit it ?

And as I wrote earlier, palm muting on the right end, no foam. If you like this kind of easy listening music (but not easy written), you'll love André Brasseur music. We saw him a few years ago with his new youngsters band, and it was just amazing. I think you all know the tunes he's playing... Check this 2017 concert :

Yep.

Of course, the neck pickup is almost mandatory to get the early days "knack bass" tone.

@Jus Lukin : remember that Ladi GEISLER was a jazz guitar player alongside with a violin player, so mixing the jazz plectrum attack on flat wounds with the violin pizzicato technique (with the fretting hand) helped him get this "knack bass" tone. So you have to mute with your fretting hand too and have loads of treble on the amp to hear the attack, but only the attack, so boosting the bass is not the idea here. The sound comes from the muting and the attack with close to no sustain and flat wounds. On early recordings, the Gibson EB short scale typical "humpf" associated with the flat wounds is really identifiable. Later recordings with the Precision were closer to James Jamerson tone.

Check this video with loads of stills :

Ok, after some research, I discovered that the bass player was Ladi GEISLER, a guitar player using a technique of his own to get the "knack bass" sound. Check this excerpt from his Wikipedia page : "From composer and big band leader James Last, he bought a late 50s Gibson EB bass guitar, with which he developed his legendary "Knack bass" sound that would become an integral feature in the Easy Listening orchestra of Bert Kaempfert. Later, he used a Fender Jazz Bass model. Most recently, he used a Fender Precision Bass when he was invited to live or recording sessions. Geisler's knack bass sound was a treble staccato bass guitar sound in which the bass string was plucked with a pick and immediately suppressed to cancel out any sustain." https://en.m.wikipedia.org/wiki/Ladi_Geisler

To me, it sounds like a short scale hollow body bass with a neck single coil pickup played with a plectrum on flat wounds muted with foam or more likely palm muting : think Eko basses and the likes. Francis Darizcuren had a similar sound way back in his early days with some similar gear...

Buy an EBS or an AER (or a few other brands) amp as they offer a 9V phantom power for your bass or a device like the ZAM. If you want to stick to rechargeable batteries, check their amperage : the higher the longer they'll last in your bass. Also buy a fast charger.

Matches do the trick too and are (were ?) made out of alder.

After the fanned frets, now it's time for the fanned bodies.

It's even B flap. 🤣

It's because you're tortoise blind : a rare disease linked to tea abuse and driving on the wrong side of the road in a German car.

I love long, complex, not complicated, don't get me wrong, well constructed and punctuated, sentences à la Gabriel Garcia Marquez describing the journey of blood leaking out of a body through a single phrase along a whole paragraph. I once wrote a whole page application consisting in a single sentence, but strangely I never received any response to my well motivated letter... That said, I have always solved the static problem you describe, including clean(ed) scratchy potentiometers, using this very well thought and safer than any other, whatever people might think, because they have no clue of its clever design unless they read the description, jack to jack cable : https://d-buz.com/ You can buy one here in the U.K. : https://www.bassdirect.co.uk/bass_guitar_specialists/Aero_DBuzz.html If you're in continental Europe, you can buy it here : https://www.eveneten.nl/en/1703/Aero-dBuz-Cable And here in the USA : https://www.bestbassgear.com/aero-dbuz-noise-cancelling-cable.htm

Isn't it : Asking for a friend who is talking in my head ! 😎

For the price he's asking you can get the whole bass and ... working. 🤦‍♂️

For all these buzzing problems there's a very simple solution. This cable : https://www.bassdirect.co.uk/bass_guitar_specialists/Aero_DBuzz.html Seems expensive, but what it does is simply amazing.

The first question to answer is this : single or double action truss rod ? If it's a double action truss rod, the nut is non removable, so the only solution is to replace the truss rod, which means going to a luthier or politely ask @Andyjr1515. If it's a single action then the nut can be removed. As the nut is already dead, what I always do is cut the long part of an Allen key then glue it with two components glue in the nut and then remove it using the correct standard key to unscrew the whole assembly.

@ped : still nothing onto my Swiss bank account. Did you use the same data center than the one you asked me to flood with water to transfer these zeros ? Or did you forget the 9 at the front ?