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La Bella OSF4 Olinto Signature Flatwound Bass Guitar Strings - .047-.107 Standard

Based on 63 reviews
Condition: New
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$45.95
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Availability: Only 4 left in stock, order soon!
Fulfilled by Sweetwater Sound

Arrives Saturday, Oct 31
Order within 3 hours and 46 minutes

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At a glance

Condition
New
Size
4 Strings
Model
OSF-4
Weight
3.84 oz
Color
Silver
Material
Stainless Steel
String Gauge
47-107

Features 2

  • .047-.107 Flatwound Stainless Steel Bass Strings
  • Standard Long Scale

Description

The tradition of string making for the Mari family was first recorded in Salle, Italy in the 1640s. The “House of Mari” supplied gut strings to legendary violin makers Amati, Cremona & Stradivari. In 1913, brothers Emilio and Olinto Mari left Italy to seek new opportunities in America, settling in NYC where they handmade gut strings in their small apartment. After much success, they opened their first factory in 1914, and soon after started making strings under the brand “La Bella”. La Bella is the oldest continuously family-owned and operated string maker in the world. Every set is manufactured in our facility in New York using a perfect combination of traditional methods and latest technologies to produce a superior string. Suitable for all genres of music, our strings utilize the best constructions around, creating very bright and long-lasting strings. Our string utilize the best available material and technique, resulting in naturally longer lasting string. We never sacrifice quality. From rounds to flats, we’ve earned our reputation as hands down the best bass string maker in the world. Each classical guitar set is the product of decades of research with quality and tone at the forefront of every set. We’re one of the only string makers to focus on the flamenco genre, providing players with the best options for flamenco music. Our acoustic folk strings utilize the best materials and techniques in the market, resulting in naturally longer lasting strings. From strings for double bass jazz players, to student-sized violin strings, La Bella has a set for nearly every genre and level. We combine high-quality material with local knowledge to produce professional quality set for the most obscure and regional instrument. The tradition of string making dates back to the 1640s in Salle, Italy, where the Mari family supplied gut strings to the famous violin builders of Cremona. In 1913, brothers Olinto & Emilio Mari arrived in New York bringing their family craft to the States. Over the years, the brothers shaped the landscape of the string industry with their innovative designs. Every set is manufactured using a perfect combination of traditional methods and latest technologies to produce a superior string. From the La Bella Olinto team in Brooklyn comes the latest in flat wound string design! La Bella has been known for decades as the foremost leader in the realm of bass strings.

Specs 21

Brand La Bella
String Gauge 47-107
Color Silver
Instrument Bass Guitar
String Material Type Stainless Steel
Brand Name La Bella
Number of Items 4
UPC 656295093571

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


Tone of rounds and feel of flats, what more can you ask for?
Size: 4 Strings
Long time fan of flats, particularly LaBella Deep Talkin Flats. I’ve had them on P basses forever, just the classic sound of flats I’ve always been used to. Broke a string stretching it, and bought these just out curiosity - I do love the articulation you get with rounds, figured I might as well try them, another bassist told me these were “the most round sounding flats out there”. I’m like an hour in with these strings and feel compelled to write a review. If you are on the fence, just get them. I’m sure they’ll settle into sounding a bit flatter, but even fresh these are the flatwounds I’ve ever used. They truly DO sound like rounds - I may even have to turn the tone knob down on the P bass. With that said, the heavy bottom end you expect with flats is still there. Really a best-of-both-worlds kind of thing. Smooth as any flats under your fingers, stainless steel so you know they’ll last like flats do, and (at least when fresh) they have the tone and articulation of rounds. ... show more
Reviewed in the United States on May 24, 2026 by Steve M

La Bella strings are amazing.
Size: 4 Strings
They sound amazing!
Reviewed in the United States on October 11, 2026 by HScorching

These strings are amazing!
Size: 4 Strings
Best strings ever!! Perfect fit for my MusicMan StingRay 34
Reviewed in the United States on September 24, 2026 by Brent miller

Favorite-Bass Strings
Size: 5 Strings
I call these favorite-bass strings because whichever bass I put them on becomes my favorite bass. The tone has great clarity and depth, bringing a new dimension to any bass.
Reviewed in the United States on July 4, 2026 by Wil

Labella sounds without ridiculous labella stiffness
Size: 5 Strings
Always loved traditional labella sound and thump, but hated how those strings feel. Higher gauges felt like putting polished rebar on a bass, but even thin sets felt like I’m fighting the strings, not playing. Olinto flats are different. They sound just as you expect, maybe a little more alive and brighter before breaking in. However, they are super comfortable unlike typical “deep talking bridge cables”. Absolutely effortless playing, smooth surface and not grabby/sticky, can take super low action without weird fret clank of stiffer strings, because when you pluck much smaller portion of the string deforms due to pliability, without making unwanted fret contact couple miles away somewhere on the fretboard. A bit stiffer that TI flats, but may even rival those in comfort due to feel and playability. Purple silk is hard is awesome, fight me. ... show more
Reviewed in the United States on July 23, 2025 by xyz

Unique set of strings, awesome sound
Size: 5 Strings
I have bought 4 different sets of La Bella Bass strings. They all sound different yet excellent. Can't go wrong with anything La Bella
Reviewed in the United States on July 8, 2026 by John Six

Great strings
Size: 4 Strings
I use three different types of strings from la bella strings. Deep talking 750N for my fender American P bass with rosewood neck. ASP-45103 IMA strings for my 60th anniversary jazz roadworn. Last but not least OSF-4 Olinto for my American jazz with rosewood neck. These strings last forever and sound great through the breaking in process. I used to buy cheaper strings and replace every 6 months or when needed but no need now. I bumped into a la Bella rep at a Phil jones bass competition in Brooklyn at the guitar shop NYC. Got a pack of strings from the rep, replaced my strings the next day and slowly but surely these strings made it to the rest of my basses. Now I play Phil jones bass amps and la Bella strings exclusively. ... show more
Reviewed in the United States on April 28, 2025 by wgouki

Nice Sound But Fragile
Size: 4 Strings
These are probably the smoothest and most physically attractive flatwound strings that I have ever played. They have this dark luster to them I adore. La Bellas definitely have a thing to them in terms of a deep rumbling sound. Pretty dark sound. My biggest issue was that these strings were very fragile. They say to only wrap the silk around the post, and not to use them with a string through body bass. Never encountered bass strings with this kind of warning… I was very careful, and I put them on a top loading P bass as instructed. One of the strings still unraveled at the ball end. Nothing crazy done by me. I don’t think their normal deep talking bass strings are this finicky. Don’t understand why these strings were made so delicate? I don’t know if it’s just bad luck on my part, but bass strings are expensive and to have one break right out of the package is so off putting and frustrating. Makes me question La Bella QC and has put me off the brand. Maybe I’ll try them again in the future, but for now just frustrated at the lost money on these shoddy strings. ... show more
Reviewed in the United States on January 30, 2025 by Jennifer A.
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