After years of using Thomastik-Infeld, I went to another brand, which wasn't too bad, in order to save a few bucks. I recently switched back to Thomastik-Infelds and it was like coming into a nice warm home after being out in a cold storm! Smooth and silky under my fingers, and lively! Lesson learned, a chain is only as strong as it's weakest link. Don't destroy your rig by skimping on strings! Well worth the price!

The B and E unwound strings are coated, probably copper. Unamplified they are fine. But they have a stronger magnetic response, they are "louder" than the rest of the strings. The sound is unbalanced. My pickup has even, non-adjustable poles. The B And E strings are too "loud". So for me, these strings are unusable.

Swift delivery and great personal service. Hard to find guitar strings are now mine! Thank you!

These strings are on a whole different level from any other jazz flatwound, I had been using D'Addario chromes for years and they were good but these Thomastik strings blow them away, no comparison, I dont why exactly they are so much better but obviously they are made with great care and precision and they cost 3 times as much as the chromes,
The tone Im getting from my Heritage Super Eagle is off the charts, the high cost kept me away for years but now that I've tried them i am never going with anything else, if you are a serious jazz player you have to try these, I guarantee you will be a fan

These sound soooo good and feel so smooth under my fingers. I've had them on my hollowbody for over a year of regular playing and haven't felt the need to change them.

A few years ago a picked up some flat wounds by a big name company. They were such a huge change that I changed them almost right away. These strings from Thomastik, in this gauge are a great set as a gateway for "new to flats" users. They sound perfect on my new Jazz box.

Want the jazz sound and feel, get a set of these!

These strings are pretty highly rated by others, but my experience was more meh. Wanted to love these, but high E string broke on install. It looked like it had a kink in it on further inspection. I'll stick with my Chromes for now.

I first became aware of these strings when given a set at the NAAM show, by a Thomastik representative.
They are superior to any of the domestic ground flatwounds (chromes, flatwires..etc.) For archtop acoustic and electric guitars, the Swing Series flatwounds are a perfect choice for jazz, blues, classic rock, surf, and slide guitar. They have both ends silk wrapped to protect the tailpiece, end pins (flat tops) and bridge, and the tuning machine head posts. The nickle wrapped strings are so smooth and polished, it is hard to see the wrapping and deliver a smooth and soft feel which makes for almost effortless playing. But the tone is something that is hard to describe in words; most flatwounds are relatively dead compared to round wound strings and lack vibrant overtones and harmonics. The Thomastik Infeld Swing Series flatwounds deliver tone with a warm, rich full sound that while not as loud as round wound strings, it is fuller and more refined. The overtones and harmonics are present and well balanced; volume is very consistent from string to string, and they have good sustain as well. Plugged into an amplifier (I recommend Sweetwaters tweed 65 Princeton Reverb Re-Issue) is a wonder experience; these strings just ooze jazz tones everywhere, you will be wondering if Tal Farlow, Barney Kessel, Charlie Christian, or Wes snuck into your studio. If you have been trying to get "that jazz tone" your search is over.
I have a hack guitar, the Epi Emperor Regent, with a set of the JS111 strings on it I leave out, as it sounds really good unplugged too, these strings deliver. My ES 175 also has a set of TIs, and it is phenomenal, I say hello to Joe Pass when ever it gets played. Some say that these strings get better with age, and there is some truth to that as I typically get much more playing on a set before changing them. The polished flat wound wrappings are easy on your frets and you get very little fret wear, this is a real plus, especially on older Gibsons and Epis where you want to preserve the original frets and fingerboard integrity. An avid player will want to change them out 2-4 times a year, depending, and an occasional user can get over a year or more. I change them when the G string gets bumps over the frets, indicating the wrappings are wearing. At that point they loose tone and don't play in tune as well. Beyond jazz, classic rock, blues, surf, and country music all sound great too, these strings add a measure of authenticity to those styles as well; many players back in the day used flatwounds too, such as the the Gibson Mona-Steel, HiFi flats. For slide, they are noiseless, no whines, and require less muting, making them much easier to play with your favorite Coriciden bottle. Do not be put off by the price, you get what you pay for and they last longer than 4 sets of cheapo strings. Spend your time playing, not changing strings.

Thank You Devin Cunningham for taking care of me! You are the best !

Best Jazz Guitar strings.

I've tried six or seven other brands, and none of the others ever excited me the way these do. For me that justifies the rating.

I finally admitted to myself that I needed to switch to a lighter gauge flat wound string set for my 3 archtops
(L5, L4, Epiphone Emperor). I expected to be disappointed in the sound and feel of this change. These Infeld strings were a complete surprise- better sound, better feel! And the cloth covering is a nice touch! Don't laugh, but I'm now going to try a set on a Strat, tuned down a half step!
Thank you Thomastik-Infeld.

These aren't just for jazz. They work well to capture clean, bright tones without being ice-picky. I've used them on a Rickenbacker 330 and they work well for Beatles-ish stuff as well as modern shoe-gaze and Indie. And can actually get nasty if you adjust your rig accordingly.

Also, they last eons and sound good the whole time.

I put these onto a Silvertone 1446 hollowbody with Bigsby. The playability of these super slippery/slinky strings cannot be overstated, absolute butter under the fingers. A wound B string is a whole 'nuther world for balanced lower-string soloing. The sound is surprisingly ~80% roundwound snappiness with the mini-humbuckers (which tend towards bright to begin with), though the zizziness is missing, which is perfect for a jazz-box :) I tried them on a '70 Paul, and while they play great (!) the lack of edge made rock less inspiring... one supposes they named them Jazz Swing for a reason?? anyway, I've tried other flats and these are definitely far more characterful and rich sounding.

completely dull sounding & hard to play.

I purchased a Godin Kingpin II from Sweetwater back in January, 2019. I absolutely love that guitar, but I was never really satisfied with the sound. It came with round-wound strings and I have had D'Addarios on it (and any other guitar) since I got it. Skyler McGlothlin, my sales rep, recommended these strings. I was skeptical because they are flats and you put flats on a bass, right (Looking back, that was silly of me since I do indeed have flats on my main bass and love them). I put these on the Kingpin and it sounds so much warmer and more alive than when it had round wound, even when unplugged. Fantastic strings. Thanks again, Skyler.

Note that if you have locking tuners on your guitar, you must wind the sixth string around the post a couple of times or the string will break. It's not like with hex core strings where you can just pull the string tight and let the locking tuner do the work. The angle the string bends at causes the outer layers of the string to come apart. This is just a thing that happens with round core strings.

These strings are nice and clear-sounding. They didn't require any breaking-in period to sound nice. They're comparable to 46-10 roundwounds in that I didn't have to make any intonation adjustments when I switched over from 46-10s. And they aren't extra thick and tight like hexcore flatwounds. Recommended if you like a clean, chiming sound.