Journal · September 23, 2026 · 6 min read
Pops vs Kolstein vs Carlsson vs 050: a bassist's comparison
Four rosins most bassists have owned at some point. What each does well, where it falls down, and which 050 hardness is the nearest neighbour.
Ask a room full of bassists what rosin they use and you will hear the same few names, usually with a story attached. Pops, Kolstein and Carlsson have earned their places over decades, and nothing here is meant to talk you out of a rosin that works for you. But if you have been curious about 050, this is an honest look at how the four compare and where each one fits.
The short version
- Pops is the very soft, very sticky classic. Huge grip, easy to overdo, can get gummy and noisy in heat. Nearest 050: Super Sticky for the grip, Soft for a cleaner version of the same idea.
- Kolstein comes in Soft, All-Weather and Hard, and maps almost one to one onto 050 Soft, Soft or Hard depending on your room, and Hard.
- Carlsson (also sold as Nyman) is the Swedish standard: softer side, smooth, a long-time orchestral favourite. Nearest 050: Soft, or Hard in summer.
- 050 is the newcomer from Groningen: three hardnesses from one recipe, handmade in small batches, developed with players from the Royal Concertgebouw Orchestra, sold in a paper cup and a kraft box, $28.00 a cake.
Pops
The American workhorse. Pops is famous for being about as soft and sticky as bass rosin gets, which is exactly why so many bassists swear by it: the bow grabs instantly, the low strings speak without effort, and it is generous with the fundamental. The same softness is its weakness. It is easy to apply too much, and in a warm hall or under stage lights it can turn gummy, grab unevenly and add a layer of noise to the attack. Pops also lingers on the hair; if you switch away from it, wipe the hair with a dry cloth first or you will carry it for a week.
If you love Pops for the grab, 050 Super Sticky is the nearest neighbour: big, dark, focused, with punch and projection, and noticeably less grit and background noise. If you have always found Pops a little much, 050 Soft gives you orchestral grip without the gumminess.
Kolstein
Kolstein's range is the easiest to translate because it is already organised by hardness. Soft is the everyday orchestral choice; All-Weather sits in the middle and is meant to hold up across seasons; Hard is for warm rooms and for players who want a cleaner, more articulate attack. Kolstein is smooth, reliable and widely stocked, and a lot of professional sections run on it.
Mapping across: Kolstein Soft to 050 Soft, Kolstein All-Weather to 050 Soft in a cool room or Hard in a warm one, Kolstein Hard to 050 Hard. One TalkBass player who moved from Kolstein Soft reported that 050 Soft stays active longer on the bow, with good grip but not too dark, which matches what we hear from other switchers: fewer top-ups between sessions.
Carlsson (Nyman)
The Swedish classic, sold under both names over the years, and a fixture in European orchestras for a very long time. It sits on the softer side without going to Pops extremes, has a smooth, even grip, and is well-behaved in cool northern halls. Its critics find it a touch dark or gummy in summer, and the cake can be brittle in dry air.
Mapping across: 050 Soft is the natural neighbour, with a similar all-round character and, in our players' experience, a cleaner attack. If Carlsson gets too soft for you in warm months, 050 Hard is the seasonal alternative.
050
050 is younger than the others, founded in 2024 in Groningen by a professional classical and early-music bassist, and it makes a deliberately unromantic pitch: rosin is a tool, so make it excellent, keep it consistent, and do not charge for the packaging. Three bass hardnesses come from one recipe, so the tone character stays in the same family and you are choosing grip rather than flavour. Super Sticky was developed with players from the Royal Concertgebouw Orchestra; Soft is the all-rounder; Hard is for chamber, solo and warm rooms. Each cake comes in a paper cup inside a stamped kraft box, both recyclable, at $28.00.
Where it is weaker: availability. You will not find it in every shop yet, which is why this store exists.
Side by side
| Rosin | Character | Best for | Watch out for | Nearest 050 |
|---|---|---|---|---|
| Pops | Very soft, very sticky | Maximum grip, big fundamental | Gummy and noisy in heat; easy to overdo | Super Sticky / Soft |
| Kolstein Soft / All-Weather / Hard | Smooth, graded by hardness | Sections that want a predictable range | All-Weather can feel like a compromise in extremes | Soft / Soft or Hard / Hard |
| Carlsson (Nyman) | Softer side, even grip | Cool halls, orchestral playing | Dark or gummy in summer; brittle when dry | Soft / Hard in summer |
| 050 Soft / Hard / Super Sticky | One recipe, three grips; clean attack | All of the above, by hardness | Fewer stockists so far | — |
Trying it without commitment
You do not need to throw anything away. Rosins blend on the hair, so a few strokes of 050 over what you already use tells you most of what you need to know in one rehearsal. If you are coming from Pops, wipe the hair first. Start with Soft unless you know you want the grab, in which case Super Sticky. The bass guide goes deeper on choosing by room and situation.