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Thomastik-Infeld Acoustic Guitar Plectrum Bronze Round Wound Medium, .013 - .061, AC113

Thomastik-Infeld Acoustic Guitar Plectrum Bronze Round Wound Medium, .013 - .061, AC113
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4 Reviews
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0% Recommend this product (0 of 4 responses)
By Bob
Thomastik Plectrum Strings
October 31, 2015
I have used these strings off and on since they came on the US market back in the 1990's. They are just as Thomastik describes: strings with a warm soft sound and low tension. I have used the med (61-13) strings on several instruments with no issues. There are several reviews here that complain about the length of the wrap not being right. I have never found that to be an issue. I have used them on both my short necked Fylde Goodfellow and my Custom Breedlove and am unable to explain why someone found that an issue. The cost may seem high to some, but they do last longer than most standard strings. They work just as well for fingerpickers and flat-pickers. A different sound that some will come to love.
By Matt
Big Problem with these strings
July 6, 2014
WARNING - big problem for quite expensive strings which are ostensibly designed to be used on guitars "struck with a plectrum", like an acoustic archtop guitar: the 3rd and 4th string don't even reach the tuning peg except for the exposed not-fully-wrapped part. And I'm not even talking about the vast majority of L-5s, L-7s, etc out there which are 25.4" scale: I'm talking about SHORT SCALE 24.9", 16 Inch Archtops. This is extremely JIVE. If you're using them on a flat top (without the extra length required for a tailpiece) they work fine...but I am still at a loss as to why anyone would want their sound. Maybe it sounds good to the Viennese...
By Russ B.
Thomastic Plectrum Bronze.
August 31, 2010
The Thomastic strings I've used in the past have been superb..in every way...

EXCEPT the strings aren't long enough for me to use on my '46 Epiphone Triumph..The flat wounds are OK but

not the round wound bronze.
By John E.
Thomastik-Infeld Acoustic Guitar Plectrum Bronze Round Wound Medium
November 2, 2009
Thomastik's description of these is accurate. They have a somewhat soft, very warm, rich sound. They play like a dream and I think they last a good bit longer than average. These are not the string for a hard-driving bluegrasser or someone who really needs a bright, forward sound.






1st E

Plain Steel



2nd B

Plain Steel



3rd G

Bronze Round Wound



4th D

Bronze Round Wound



5th A

Bronze Round Wound



6th E

Bronze Round Wound




Plectrum Acoustic Series

characteristics: soft sounding, low tension

"PLECTRUM Acoustic Series are soft sounding strings for acoustic guitar with low tension on the bottom end. The plain strings are made of brass coated steel, the wound strings have a silk inlay in combination with a highly flexible steel core. Wound strings are polished bronze round-wound.

A remarkable string that prompts comments like "I never knew a string like this existed!". The combination of lower overall tension, hybrid arrangement of flatwounds with roundwounds and silk inlays (for precise overtone balance) produces a beautiful, almost classical tone, with the warmth of bronze and the easy playbility of a fine set of jazz strings. And because of its low, evenly balanced tensions, Plectrums can extend the playing life of many fine older guitars with weak bracing and other special age conditions.

PLECTRUM are available for 6- and 12-string instrument.



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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