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Thomastik-Infeld Phosphorbronze Round Wound 4 String, .041 - .086, AB344

Thomastik-Infeld Phosphorbronze Round Wound 4 String, .041 - .086, AB344
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12 Reviews
92% (11)
8% (1)
0% (0)
0% (0)
0% (0)
17% Recommend this product (2 of 12 responses)
August 11, 2022
I love the light gauge... it makes it possible to keep my action low on my electric/acoustic bass. Love the sound.
By John M.
Sydney Australia
Good strings
May 25, 2019
I use these for a short scale banjo bass. Usually played with no amp or with just a mic, these strings really made the instrument alive, very similar to velvet garbo double bass strings on a double bass.
By !Mikie!
Acoustic/Electric Bass Strings
January 10, 2017
Acousticore bass strings changed my life as a long-time bassist! They last about 4 times longer than my usual brand, and play like a dream! No more ripped-up fingertips from playing extreme finger style bass! And they don't require the "gorilla grip" that regular strings do - so I can easily switch between fiddle/mandolin and my acoustic/electric bass without getting left hand cramps. These are the very best strings I've ever used. I'm going to put a 6-string set on my guitarrĂ³n!
By john s.
best strings for short scale ABG
August 19, 2014
I use these for my short scale acoustic bass guitars (Guild, Earthwood, Harptone, etc.). They are by far the best tone I have found in a short scale ABG scenario (even though these are long scale strings). They are definitely low tension, and even though I typically find high tension more pleasing, I found the low tension sacrifice to be worth the boost in tone. I have tried dozens of different strings on my ABG's, so I have plenty to compare these against.
By Ron E.
Acousticore infeld bass strings
March 21, 2013
Just put these strings on my Ibanez fretless acoustic and they are super. The sustain is excellent and the ease of playing is great. These are the only strings I will ever use on this bass.
Thank you "Just Strings".
By Sonny F.
thomastilk infeld
August 19, 2011
The strings sound great. Very good sustain. Can't put my bass down. A little pricey but, it's worth it. I use the same brand for my upright. Very satisfied.
By jesus f.
thomastik AB344
April 24, 2011
By David M.
Thomastik Accousticore Strings
March 19, 2011
I use these on three instruments with piezo bridge pickups. The strings produce a huge warm sound that sustains forever. The service at Just Strings is the best.
By Doug J.
Acousticore Strings
May 16, 2010
I bought a cheap Ashton 4 String Acoustic Bass for recording purposes. The tone was adequate until I replaced the strings with the Acousticores. The difference was amazing. The Bass now sounds like a stand up bass when played acoustically. A really nice smooth acoustic sound with a lot of bottom end and a lot of volume. It sounds much better than my mate's very expensive acoustic bass. Plugged in the amazing tone is transferred well through my PA system. I reckon the strings turn a $500 bass in to $2000 bass. I love them. For X sake don't stop making them.
By Craig W.
Best stings for fretless bass guitar w/piezo pick-up
January 21, 2010
The only reason I'm here is because it's been so long since I bought strings that I panicked and started Googling "acousticore" strings. Happily, I found that my favorite string store still carries them, and still at the best price.

Decreased tension and deep bass coupled with phenomenal overtones are the main reason I use them. As a cello and upright bass player, I've become accustomed to a certain feel that allows me to articulate notes DYNAMICALLY. With these strings, it's possible to mute, slide and vibrato with the feel of gut strings, and the bright and deep sound of bronze.

Honestly, if you play a fretless acoustic bass with a piezo pick-up, or with a microphone, there are no better strings. The only consideration would be if you needed more harshness and volume to cut through in a completely acoustic situation. There, the Dean Markley phosphor bronze would be better (they lack the feel but aren't as stiff as the D'Addario but just as loud)

But, again, if you are playing with a pick-up or microphone (I'm looking to add a DPA 4099 to my Hafling set-up) in either a recording or live performance, and you want the feel and sound of a real bass or cello, you will LOVE these strings.

I had to cut the cloth wrapping to get them to clear the nut on my Halfling because it has a floating bridge (hence the windings came right into the groove of the nut) but it wasn't a problem.

One other benefit of these strings... they will sound and feel good about ten times longer than any other string. My record for Dean Markley or D'Addario was two months when the overtones were gone and they were almost hard to tune. With my Tomastic Acousticore strings, they sound perfect for about a year, and acceptable for another year. And I've never had one break, ever.

Again, thanks to Just Strings for keeping these where I can get them. And keeping them at a price I can afford. (My local store buys them from here, and charges me $20 on top of the JS price.)
By BassAce
December 6, 2009
Incredible, that's all that I can say. Stumbled upon this site and these strings one sleepless night. They sound incredible, 1000% times better than I even imagined. I put them on an inexpensive $200 acoustic bass that I had that I used to just play around with when I didn't have the time to hook the electric, etc. Now my bass sounds better than any acoustic that I have ever tried, regardless of the cost. It's one of my favorite basses now and I find myself playing it more. Had to adjust the truss rod because of the lower string tension caused a lot of fret buzz. I can't wait to try some of their strings on my 6-string electric. Well worth the cost.
By Jesse
Truly Unique and Awesome Strings
December 2, 2009
These are fantastic strings. They can truly change the tone of your bass. They are soft to the touch and much easier to play than regular acoustic bass strings. They also bring out much more low end and warmth than regular acoustic bass strings. They are very low tension which is very nice for playing but can cause a bit of fret buzz. I love them and would definitely recommend trying them.






1st G

Phosphorbronze Round Wound on Nyloncore



2nd D

Phosphorbronze Round Wound on Nyloncore



3rd A

Phosphorbronze Round Wound on Nyloncore



4th E

Phosphorbronze Round Wound on Nyloncore




Acoustic Bass

characteristics: soft, natural upright-like tone

"Soft sounding strings for upright-like tone. Phosphorbronze roundwound on Nyloncore specially designed for acoustic bass guitars and solidbody basses with piezobridges.



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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