Jazz Basses are great basses , so i'd like to get a very good one for my recording studio ( pro ) , as i already have several nice guitars but only one bass. I'm not bassist originaly but guitarist, although i've begun to learn to play bass a few years ago, enough to be able to play the bass on my music / compos / demos. The bass i have bought then was a used (like new) Japanese JB with USA pu's from 2004-2006 era for about 700 euros after i had bought a little yamaha bass for 300 euros / 2000 francs about 15 years ago but it was really unpleasant to play so i never used it ! As soon as i got that JP JB, i really started to learn as the neck was much better and the sound as well ! So, as i'm setting up a recording studio , a long time project for which i buy gears little by little for many years and i now have everything needed to setup this studio ( still looking for a new place to rent though, to install it as it has got bigger these last years ) but i'm wondering about buying a very good vintage JB from the 60's , to have at least one very good bass here (it would be an investment as well) . I know how to choose guitars as i have several nice ones i selected through years ( mostly 60's and 90's ones ) but i'm not totaly sure of what i have to look for , to select a very good sounding 60's jazz bass ( mid to late 60's ) ! I know more or less what i have to look for ( apart from the originality of the bass parts and finish) , for playability ( although opinions and advices are always welcome) but i'm not sure what i have to look for to be sure i will buy a very good sounding JB for 70's type of rock / hard rock or actual rock , funk, blues, pop ... etc I have learnt that weight matters in term of tone , on guitars and usualy, light ones can be bass/ low end light while heavy ones with dense wood can be very bright in the upper mids. Some very heavy can lack resonance, as for some very light ones, so i often try to get a guitar with an average weight in the middle of what can be found for the type of guitar i buy ( although there are always exceptions ) . In another hand ,i suppose light basses are quite nice to carry on live situations. But does it have to resonate much or not , i know there are two opposite theories for guitars that might work for bass as well, some saying the instrument has to resonate much while some other say it doesn't have to ( for an electric instrument) , as it gets in conflict with the string vibrations . Does it have to have much low end or more to have a balanced tone through the frequency spectrum (from low to high) without a lot of low end but enough mids to cut through a band or a mix ( with regular strings ) ? I noticed when i record the JP JB (62) i have , i have had hard time to place that bass in a dense mix sometimes ,recorded generaly through a VT737SP DI although i bought recently a RED DI and millenia TD1) . Last, what are the prices in Europe for a mid 60's JB in excellent condition (although i prefer one in good condition and playing and sounding very good better than one mint but sounding average ) ?