--- product_id: 3834816 title: "Kolstein Ultra Formulation Supreme Bass Rosin Soft KR-013 Low Powdering and Smooth, Easy Bowing Rosins, Resin" brand: "kolstein" price: "$5.21" currency: USD in_stock: false reviews_count: 8 url: https://www.desertcart.us/products/3834816-kolstein-ultra-formulation-supreme-bass-rosin-soft-kr-013-low store_origin: US region: United States of America --- # Low Powdering Soft/Hard Grade Smooth Bowing Kolstein Ultra Formulation Supreme Bass Rosin Soft KR-013 Low Powdering and Smooth, Easy Bowing Rosins, Resin **Brand:** kolstein **Price:** $5.21 **Availability:** ❌ Out of Stock ## Summary > 🎶 Elevate Your Sound with Every Stroke! ## Quick Answers - **What is this?** Kolstein Ultra Formulation Supreme Bass Rosin Soft KR-013 Low Powdering and Smooth, Easy Bowing Rosins, Resin by kolstein - **How much does it cost?** $5.21 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/3834816-kolstein-ultra-formulation-supreme-bass-rosin-soft-kr-013-low) ## Best For - kolstein enthusiasts ## Why This Product - Trusted kolstein brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Minimal Mess:** Experience low powdering for a cleaner playing environment. - • **Dual-Pac Convenience:** Includes both hard and soft bass rosin in one sleek container. - • **Professional Quality:** Crafted for serious musicians who demand the best. - • **Unmatched Versatility:** Soft or hard grade options for every player. - • **Effortless Performance:** Designed for smooth, easy bowing that enhances your sound. ## Overview The Kolstein Ultra Formulation Supreme Bass Rosin KR-013 offers musicians a unique Duo-Pac containing both soft and hard bass rosin, ensuring optimal performance with minimal mess. Designed for professional players, this rosin enhances bowing ease and sound quality, making it a must-have for serious bassists. ## Description Exacting Research And Development Has Perfected Ultra Formulation Supreme Rosin In Several Grades: Violin, Viola, Cello Medium, Cello Normal, Bass In All-Weather, Soft Or Hard Grade And A Bass Duo-Pac Which Contains Half Moons Of Hard And Soft Bass Rosin In One Container. World Famous For Its Low Powdering And Smooth, Easy Bowing. Review: Fantastic Double Bass rosin - recommendation from a classically trained bassist - This is a comparative review of Samuel Kolstein's Bass rosin vs Pop's Bass Rosin. Both are very good but this is why I prefer Kolstein's. While Pop's is great and one of the standard rosin brands for Double Bassists, I have always preferred Kolstein's brand (and not because I owned a bass and bow from the luthier Sam Kolstein for years- comparatively, it just surpasses Pop's performance). Pop's is just too soft and with Kolstein it is just the right consistency to give you a good grip without being too sticky, runny etc especially in warm weather. It also does not get too hard or have a tendency to crack in colder weather as Pop's does. You can tell by the sound when someone has too much rosin on their bow and with Kolstein, even if you use a little more than you need it won't "glob" up on your bow hair and create that kind of "gravely" sound behind the note when there's too much. It gives you an excellent grip but still allows the bow hair to have a natural feel and sound on the string (also a little secret is that I always carry a toothbrush and brush off any excess rosin and separate the hairs). Pop's is so soft that with more inexperienced players, they can easily use far too much rosin and suffer from too much rosin build up on the bow hair which affects sound negatively. You can see from the posted images that there is a much smaller quantity of the Kolstein brand than the Pop's. Why? Contrary to belief you really don't need much rosin at all if you have quality bow hair- (if you go with "AAA" level Moroccan horse hair in either salt and pepper or black, you really need very little rosin- if you use this same quality but in white, you just need a bit more on it than you'd use for the salt-pepper and black because the hair is naturally not as course. Ask your bow repairer/ luthier for this type of hair and you will hear a major difference in the bow sound before you even use any rosin. NEVER use synthetic bow hair. Synthetic hair combined with rosin equals bad tone. Also the actual Kolstein rosin itself comes encapsulated inside a rubber sleeve (see images) that maintains the structure of the rosin itself within the outer gold cardboard casing and won't allow the rosin to stick to the sides in any weather. All I do is roll down the rubber just enough to draw the bow across it a couple times, let the rubber go and it keeps everything nicely in its place. This is an upgrade from back in the day when it was encased in a cardboard casing you had to peel off. As you can see from the Pop's rosin (given to me to use from an instrument rental shop with a piece of the paper cup torn off ---huge mistake!). The rosin melts out of the cup often and once it gets out of its paper cup holder it sticks to the plastic cup. When it is not melting, it's generally cracking. I suggest getting Kolstein's All-Weather grade (this is the ultra which works too) and you will be covered for well over a year by using sparingly on good bow hair. HAPPY PLAYING!! Review: The best rosin I have used in over 50 years on the bass! Does not glaze over time, easy to apply, excellent gripping. - As someone who has played String Bass for about 50 years, I've tried and used a lot of various Rosin's over the years. There are even some Rosins no longer made. By every stretch, Kolstein rosin the absolutely the best rosin I've ever tried. 1: Unlike other rosins, over time the rosin doesn't "glaze", it remains consistent. 2: It has excellent aggressive gripping power on the strings. I love that. 3: It has excellent tone. You'd be surprised at the differences between rosins. 4: It does not take a long time to rosin up your bow. Other rosins you have to really warm them up with many strokes. Kolstein rosin applies easily to the bow. 5: It doesn't create a lot of dust, good for allergic type issues and keeping the bass clean. One thing to note, all Rosins are NOT compatible. Use up or clean off the rosin on bow before changing over to Kolstein or any other rosin. Kolstein Music has been probably the most reputable and expert bass dealer in the United States. It's an incredible treat to visit their store and see their incredible array of vintage and new basses. They have engineered a number of products over the years, various strings, cases, bridges, all with excellent quality and integrity. I also recommend the rosin to my students, sometimes giving them. Picture of my 1930 Ferratti Italian Bass, Dolling German Bow, Kolstein protective Bib for a bass, and an old cake of very used rosin. I got this bass from Barrie Kolstein as well. see my web site www.comarow.com ## Features - Soft or hard grade and a Bass Duo-Pac which contains half moons of hard and soft bass rosin in one container - Kolstein Ultra Formulation Supreme Bass Rosin ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #26,635 in Musical Instruments ( See Top 100 in Musical Instruments ) #8 in String Bass Rosin | | Customer Reviews | 4.7 out of 5 stars 209 Reviews | ## Images ![Kolstein Ultra Formulation Supreme Bass Rosin Soft KR-013 Low Powdering and Smooth, Easy Bowing Rosins, Resin - Image 1](https://m.media-amazon.com/images/I/51ieFH93+qL.jpg) ![Kolstein Ultra Formulation Supreme Bass Rosin Soft KR-013 Low Powdering and Smooth, Easy Bowing Rosins, Resin - Image 2](https://m.media-amazon.com/images/I/613NxJ7ZpLL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fantastic Double Bass rosin - recommendation from a classically trained bassist *by O***4 on August 12, 2015* This is a comparative review of Samuel Kolstein's Bass rosin vs Pop's Bass Rosin. Both are very good but this is why I prefer Kolstein's. While Pop's is great and one of the standard rosin brands for Double Bassists, I have always preferred Kolstein's brand (and not because I owned a bass and bow from the luthier Sam Kolstein for years- comparatively, it just surpasses Pop's performance). Pop's is just too soft and with Kolstein it is just the right consistency to give you a good grip without being too sticky, runny etc especially in warm weather. It also does not get too hard or have a tendency to crack in colder weather as Pop's does. You can tell by the sound when someone has too much rosin on their bow and with Kolstein, even if you use a little more than you need it won't "glob" up on your bow hair and create that kind of "gravely" sound behind the note when there's too much. It gives you an excellent grip but still allows the bow hair to have a natural feel and sound on the string (also a little secret is that I always carry a toothbrush and brush off any excess rosin and separate the hairs). Pop's is so soft that with more inexperienced players, they can easily use far too much rosin and suffer from too much rosin build up on the bow hair which affects sound negatively. You can see from the posted images that there is a much smaller quantity of the Kolstein brand than the Pop's. Why? Contrary to belief you really don't need much rosin at all if you have quality bow hair- (if you go with "AAA" level Moroccan horse hair in either salt and pepper or black, you really need very little rosin- if you use this same quality but in white, you just need a bit more on it than you'd use for the salt-pepper and black because the hair is naturally not as course. Ask your bow repairer/ luthier for this type of hair and you will hear a major difference in the bow sound before you even use any rosin. NEVER use synthetic bow hair. Synthetic hair combined with rosin equals bad tone. Also the actual Kolstein rosin itself comes encapsulated inside a rubber sleeve (see images) that maintains the structure of the rosin itself within the outer gold cardboard casing and won't allow the rosin to stick to the sides in any weather. All I do is roll down the rubber just enough to draw the bow across it a couple times, let the rubber go and it keeps everything nicely in its place. This is an upgrade from back in the day when it was encased in a cardboard casing you had to peel off. As you can see from the Pop's rosin (given to me to use from an instrument rental shop with a piece of the paper cup torn off ---huge mistake!). The rosin melts out of the cup often and once it gets out of its paper cup holder it sticks to the plastic cup. When it is not melting, it's generally cracking. I suggest getting Kolstein's All-Weather grade (this is the ultra which works too) and you will be covered for well over a year by using sparingly on good bow hair. HAPPY PLAYING!! ### ⭐⭐⭐⭐⭐ The best rosin I have used in over 50 years on the bass! Does not glaze over time, easy to apply, excellent gripping. *by L***Z on February 25, 2015* As someone who has played String Bass for about 50 years, I've tried and used a lot of various Rosin's over the years. There are even some Rosins no longer made. By every stretch, Kolstein rosin the absolutely the best rosin I've ever tried. 1: Unlike other rosins, over time the rosin doesn't "glaze", it remains consistent. 2: It has excellent aggressive gripping power on the strings. I love that. 3: It has excellent tone. You'd be surprised at the differences between rosins. 4: It does not take a long time to rosin up your bow. Other rosins you have to really warm them up with many strokes. Kolstein rosin applies easily to the bow. 5: It doesn't create a lot of dust, good for allergic type issues and keeping the bass clean. One thing to note, all Rosins are NOT compatible. Use up or clean off the rosin on bow before changing over to Kolstein or any other rosin. Kolstein Music has been probably the most reputable and expert bass dealer in the United States. It's an incredible treat to visit their store and see their incredible array of vintage and new basses. They have engineered a number of products over the years, various strings, cases, bridges, all with excellent quality and integrity. I also recommend the rosin to my students, sometimes giving them. Picture of my 1930 Ferratti Italian Bass, Dolling German Bow, Kolstein protective Bib for a bass, and an old cake of very used rosin. I got this bass from Barrie Kolstein as well. see my web site www.comarow.com ### ⭐⭐⭐⭐⭐ Kolstein at that price is an excellent value. *by E***Y on December 8, 2025* Excellent product. Arrived on time and undamaged. Well worth the money. ## Frequently Bought Together - Kolstein Ultra Formulation Supreme Bass Rosin Soft KR-013 Low Powdering and Smooth, Easy Bowing Rosins, Resin - TROPHY 4080 Rock Stop Bass Endpin Rest - Essential Elements for Strings – Double Bass Book 1 w/EEi | Beginner Bass Method Book with Online Learning Tools and Play-Along Tracks | Hal Leonard Instructional Music Book --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/3834816-kolstein-ultra-formulation-supreme-bass-rosin-soft-kr-013-low](https://www.desertcart.us/products/3834816-kolstein-ultra-formulation-supreme-bass-rosin-soft-kr-013-low) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-04*