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Thomastik-Infeld Electric Bass Nickel Round Wound Roundcore 4 String, .043 - .089, JR344

Thomastik-Infeld Electric Bass Nickel Round Wound Roundcore 4 String, .043 - .089, JR344
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10 Reviews
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10% Recommend this product (1 of 10 responses)
By Glenn
Oakland California
High Quality Bass Strings
April 1, 2020
I'm a big fan of these high quality bass strings. While I use them on my electric basses there is a connection to what you would consider top of the line symphonic strings for orchestra.
They are bright and feel good on your fingers.
Good sound. Well made and easy to play. The gauge is on the thinner size and not what you would probably want if you wanted really big and beefy strings.
By jbd5015
TI Jazz Rounds
September 24, 2014
Dont be hesitant to try these strings at any skill level!!!

You will most likely need to adjust your neck and bridge to make them work right because of tension and string diameter changes from your old strings. I was using GHS bass boomers and then D'Addario XLs for a few years. Will probably never switch back.

Technique changed slightly due to tension characteristics, but these are incredibly dynamic and expressive strings. Currently have been using them for rock, grunge, country, punk etc and they are awesome!
By Alex
Thomastik-Infeld Jazz Roundwounds
October 9, 2013
These Jazz rounds are as beautifully crafted and musical as the famed TI Jazz Flats. They provide the immediacy of roundwound attack, whilst remaining warm enough to compliment your use of TI flats on your other basses. They are very slinky,needless to say, but in a seemingly impossible way, they retain the firmness you need to dig in. They're round and loud, too. Frankly, Thomastik Infeld are nearly a miracle. I use these on fretless along with flats, and find them both unexcelled. In fact, NOTHING comes close. You WILL need a couple of weeks to adjust your technique; do NOT give up. You will become a better player, simply put. I would not use another brand. I can't wait to try their other models.
By Nisi J.
September 19, 2013
Amazing. Actually as good as the best reviews said they would be. Very easy to play, no buzz or wobbliness, like some reviewers feared from the low tension, very resonant, full sound and very even across all four strings. The string noise is incredibly reduced but there is some fine grit to them, not a feeling of flatwound, so you still get that contact feeling/grab. I can play longer and get no soreness and can also play passages at speeds that were not possible before because I don't have to work as hard and can direct that energy toward movement rather than pressure. Liberating.. won't go back! My friend saw them and right away bought a new TI set for his guitar:) I read one guy said that after he put on these strings, people were asking about his bass. He said it was actually the strings. I love my Fender Jaguar, it is perfect, but these strings made it that much better. Many thanks to JustStrings.com for having and knowing the particulars of this set!
By Edward
October 20, 2011
I'm glad to participate. I'm a great fan of Thomastik-Infeld strings, both for bass guitars and upright electric (NS Design) basses. These round wounds were an experiment for me, to replace the Thomastik Acousticore phosphor bronze strings provided as original equipment on a Turner Renaissance acoustic-electric bass guitar, mainly because I get more string noise from the Acousticores than I am used to. In the end I went back to the Acousticores because the Thomastik-Infeld nickel round wound strings have a considerably higher tension than the Acousticores and I didn't want to risk long term damage (e.g. potential warping of the neck) from the increased tension.
By Christian
T.I. strings
June 8, 2011
WoW !!!!!!!! For me they're the best strings; they're so smoooooooooooth to the finger, and what a TONE man !!!! I love the low tension for fingerstyle, and now I don't want anything else except these strings. Chris. Canada.
By Blue
October 7, 2010
Fantastic strings, blues, jazz or what ever.
By paul f.
October 1, 2010
They are pricey, but you won't find a better string on the market..
By D M.
TI JR344
March 13, 2010
I use the flats on my P bass and these on my jazz bass. These are the finest strings you can buy. Very flexible , windings are tight but the string is supple. Perfect string to string balance. If you play w/ a light touch and good plucking control you'll love them, not sure if you have a heavy handed attack.
TI Jazz Rounds
November 21, 2009
Love the sound!






1st G

Nickel Round Wound Roundcore



2nd D

Nickel Round Wound Roundcore



3rd A

Nickel Round Wound Roundcore



4th E

Nickel Round Wound Roundcore




Jazz Electric Bass

characteristics: smooth, warm balanced

"E-Bass Jazz Series are strings with extended durability and high output. A highly flexible steel core gives the string a balanced feeling and a special character. The overall sound characteristics can be described as very close to the double bass.



Founded in 1919, one of the world's largest manufacturers of strings for musical instruments has applied 76 years of experience to develop a new generation of strings.


Vienna, music capital of the world


Our strings are handmade by highly qualified specialists. With our extensive quality control via computer and signal processing equipment, we have successfully combined Old World craftsmanship with state of the art technology.


The results of our research and our scientific approach to string manufacturing -- based on cooperation with musicians and scientists -- have led to the creation of a new line of guitar strings that is exactly what professionals are calling for.


Guitar strings for creative musicians.

THOMASTIC-INFELD is the best kept secret in the music industry. Did you know that for decades most of the great jazz and classical guitar players have chosen THOMASTIK-INFELD strings? Old World quality and experience, combined with the most advanced modern technology available, give you creative tools to meet the highest standards of performance. Perhaps the time has come for you to discover what a chosen few have know for years? THOMASTIK-INFELD cares about the needs of professionals and amateurs. Worldwide."



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