I ordered these strings for my Fender Jazz bass and I'm glad I did. I had on the "Rotosound RS77M Jazz Bass Monel Flatwound" strings for about a year and a half and they were starting to sound not as flatwounds should. So I decided I wanted to switch to La Bellas based off all the overwhelmingly positive reviews I've read. First set of LaBellas I got were for my Hofner bass and I was beyond pleased with the La Bella tone and feel. So I decided to pick up a set of Black Nylons for my Jazz bass because they essentially sound like and feel like flatwounds. Plus I always thought black looks super cool. These strings play like gold. I thought my La Bella flatwounds for my Hofner were as smooth as butter, but these feel EVEN smoother. The tone these Black Nylons produce are so beautiful and warm sounding. Gives it a nice fat bass tone I was looking for. It's rad, the threading on the top of the strings are Purple, very cool looking. I've had these strings on for about a week and the more I play and break them in, the better sounding they are getting. It's amazing how that works. It's VERY safe to say I will NOT be experimenting with any other strings for my Jazz bass. I found what I'm looking for. La Bella really outdid themselves with these strings.
One thing to note for those who are considering switching to Nylons but are on the fence about it: These strings feel unlike anything you've probably ever played before. If you've played with Flatwounds before, that would be the closest to understanding how smooth and rich the tone of these string are. Even then,these play much smoother than any Flatwounds I've ever played. These stings are NOT meant to sound bright, or to slap and pop with. You wanna get plain ol' roundwounds for that. However, if you're looking for a deep, rich bass sound that will cut thru the mix without being overpowering, these are most definitely for you.
I can't say enough good things about these strings. I'm glad I bought them and as I said, I am sticking with La Bella for life.

I used these tape wrapped strings for the first time in 1970, I switched to guitar from there until 4 years ago. I put a new set of LaBellas on my new bass and I'm glad I did. Warm, true sounding, easy on the hands & fingers, no noise when sliding up & down the neck, I love "˜em.

I mounted this strings on my 1978 Jazz Bass. The sound now is rich deep and full. This strings are better paired with SD quarter pound pickups for an even deeper sound on the upright bass territory. The string tension is lower than regular strings therefore the neck relief needs to be adjusted accordingly. I installed 0.105 and my nut didn't need to be adjusted. I decided to set the action a little higher than normal because this strings like to be stretched and hammered. I used the typical Motown seting with a sponge between the bridge and the bridge pick up. One drawback of this strings is that they are not grounding statics like the regular ones. In order to fix that I installed a strip of conductive tape from the electronic cavity to the thumb rest (under the pickguard) and it worked. I can't reccomand this string enough for a vintage/ upright type of sound, I rather use taped strings instead of flats for this application.

I liked the tone these produced while helping to prevent finger blisters. They also allow easier sliding and require less cleaning/dressing. Plus, the black strings look good on any bass!

These strings feel great, they are low tension and low friction! They have the brightest and punchy-est tone I've ever heard from flatwound strings, yet they still retain that smooth warmth that nylon and flatwound strings are known for. These strings are ideal for acoustic and fretless basses. Their warm bold tone meshes perfectly with the sound of an acoustic. The only downside is that they are really sensitive, so they pick up the slightest sound and as a result can be harder to play with out extra noise. If you play rhythm or use a lot of percussion, you can use these extra sounds to your advantage. I would highly recommend these strings!