Thomastik-Infeld Classic S KR116 Classical Guitar Strings

Thomastik-Infeld Classic S KR116 is a six-string set for classical guitar, with flat-wound strings and ball ends. Its listed gauges and reported 40.1 kp total tension make the intended playing feel a key point to compare with your current setup.

At a glance

Six-string Classic S set, model KR116, with ball ends according to the product description.
The listing gives gauges .016, .023, .024, .025, .031 and .039 and total tension of 40.1 kp.
The manufacturer describes a clear, balanced sound and recommends the set for classical, fingerstyle and folk playing.

Price

£30.50Save 17%

Reference price: ~~£36.67~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Ball ends are specified for the strings, a useful fit detail when replacing a set.
The listing provides both individual gauges and a total tension figure to help compare playing feel.

Technical specifications

14 specifications

Identity
Brand	Thomastik-Infeld
Model	Classic S Series
Model number	KR116
Instrument	Acoustic Guitar

String details
Gauge	Light
Individual gauges	.016, .023, .024, .025, .031, .039
Total tension	40.1 kp
Materials	Nylon, Chrome Steel
Material types listed	Steel, Copper, Nylon
Finish	flach
Colour	chrome
Coating	Coated

Origin and weight
Country of origin	Austria
Weight listed	0.1 Pounds

What to know before buying

Listing details to confirm

Listing details are inconsistent about construction: the feature text describes nylon treble strings and nickel-plated chrome-steel bass strings, while the description says nylon tape on a steel rope core for the treble strings and silver-plated chrome steel for the bass strings. The materials fields also differ, listing nylon and chrome steel in one place and steel, copper and nylon in another. Confirm the exact string construction and materials if these distinctions matter to your choice.

What’s in the box

Included

Complete set of classical guitar strings

Who is it for?

A good fit for

Classical guitar players looking for a light-gauge set with ball ends.
Fingerstyle and folk players considering the manufacturer's suggested uses and listed total tension.

Less suited to

Players seeking a standard nylon-only classical set, unless the listed mixed-material construction matches their preference.

Thomastik-Infeld Classic S KR116 Classical Guitar Strings · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 169 ratings

5 stars80%80%
4 stars6%6%
3 stars3%3%
2 stars1%1%
1 star10%10%

Customer feedback highlights perceived quality, a mellower tone that reportedly improves over time and versatility, while experiences with durability and feel are mixed. Some customers mention unwound G strings. For a set whose listing specifies flat-wound construction and a particular tension, these reports make it worth weighing tonal preference and longevity together rather than assuming a uniform feel or lifespan.

Positive themes

Customers describe the strings as high quality and report a mellower tone that improves over time.
Customers mention versatility, including use on solid-body electric and 13-pin MIDI classical guitars.

Mixed feedback

Customers disagree about durability, with some reporting unwound G strings.
Feedback on feel is mixed.

Frequently asked questions

How many strings are included?

The listing identifies a complete six-string classical guitar set.

What are the listed gauges and tension?

The gauges are .016, .023, .024, .025, .031 and .039. The listed total tension is 40.1 kp.

Are these strings nylon or metal?

The listing describes mixed materials, but its descriptions of treble and bass construction are inconsistent. Check the construction details if material type is decisive.