Thomastik-Infeld Classic S Acoustic Guitar KR116

Love these strings! Great tonality, perfect for my 100 year old parlor guitar

Incredible strings. Play like a dream. Expensive but well worth putting the best strings available on my prized vintage guitar!

These rope core Classical Guitar strings are strange in the best possible way. They feel and play like nylon strings but lend a bit of acoustic quality to the sound of a Classical or Nylon String guitar. That said, they are polarizing - players seem to either love them or hate them. I happen to love the way they sound and the way they feel.

Fun fact, these flat/tape wound hybrid strings have a "rope core" - which is essentially a braided metal wire. Because of this, they work with magnet pickups as well as under-saddle Piezo pickups.

These are strange and wonderful strings. Expensive, but lots and lots of tone, great feel, low tension, flat wound, and so far seem to last nearly forever, justifying their price.

I am currently using these on a very old ladder-braced parlor guitar and they are excellent. Planning on trying them on other guitars soon.

The guitar sounds so sweet. The sustain is amazing. I love it for classical, but it's now a
steel string acoustic as well.

I have these strings on all 3 of my “electric” classical guitars and have been using them for over 10 years: Godin Grand Concert SA (RMC 13-pin midi system), Aria Sinsonido (Ghost Hexaphonic 13-pin midi system retrofit) and a Cordoba Stage. They are great for midi guitar playing and trigger very well without a lot of false triggers, as long as the guitar is setup properly. I have had the same set of strings on the Godin for about 3 years. On the non-midi Cordoba I am able to get a fairly mellow jazz like sound that I enjoy. For my acoustic classicals I use the Thomastik CF128 with Flatwound E-g with nylon b & e because I think the wound b & e sound to bright.

It is important to polish the frets before installing these strings, otherwise the strings will start to wear and unravel at the rough frets (been there, done that). I lightly sand all the frets with 1200 grit sandpaper in conjunction with fretboard guards every time I change the strings. If you have never polished the frets, you might want to start with a light sanding with 800 or 1000 grit before moving on the 1200 grit.

Steel strings are a little too much for me and I don't like the tinny, plinky sound of a traditional classical guitars so I've settled on Folk Nylon guitars from the 1960's.

Using Tomastik strings (KR116 & John Pearse Folks) produce a great sound which is the best of both worlds: a nice steel sound with the ease of nylon. It's just a great sound and it sounds fantastic through an acoustic amp.

The only problem with these strings is their total foot lbs of force they place on your bridge.
The KR116's are 88.0 total lbs while the John Pearse's are 84.9 total lbs.

With that in mind you have to be aware of the guitar you will be using. I don't think modern classicals would have a problem with hard/high tension strings but I would be mindful of using them on vintage nylon guitars i.e. 1960's and certainly pre-war. High tension strings weren't around when these guitars were designed so keep that in mind - and it's always best to use the total ft lbs number rather than the meaningless terms Medium, High, Hard, Light, etc.

I won't go over 85 ft lbs for my 1960 folk nylons and I play these in DADGAD, DADFAD, and DADF#AD which knocks off a few ft lbs too - I assume. If anyone knows the difference, in ft lbs, between standard tuning and DADGAD tuning I'd sure would like to know .