Description
Reviews
| Brand | - |
| Category | Musical Instruments/Guitars/Pianos/Accessories / Rosin and Other Low-Value Consumables |
| Origin | - |
| Brand | OTTO |
| Model Number | MR-15 |
| Country of Origin | Germany |
| Compatible Instruments | Violin, Viola, Cello, Erhu |
| Shape | Rectangular Block |
| Color | Dark Amber |
| Weight | 30g |
| Texture | Smooth and Hard |
| Packaging | Protective Cloth Pouch Included |
| Recommended For | Professional and Student Musicians |
Anonymous
Mar 13, 2026
Rating: 5/5
My go-to rosin for years
I have been using OTTO rosin for over a decade. This MR-15 block is reliable, affordable, and delivers a warm tone suitable for orchestral playing.
Anonymous
Mar 12, 2026
Rating: 5/5
Excellent grip for my cello
This German rosin provides fantastic grip without being too sticky. The sound quality on my cello has improved significantly since switching to OTTO.
Anonymous
Mar 11, 2026
Rating: 5/5
Classic German quality
You can tell this is authentic German craftsmanship. No dust, easy to apply, and consistent performance every time I practice.
Anonymous
Mar 07, 2026
Rating: 5/5
Perfect for Erhu players
I was skeptical about using this on my Erhu, but it works beautifully. It creates just the right amount of friction for traditional pieces.
Anonymous
Mar 01, 2026
Rating: 4/5
Great value for money
Works well on my violin. It lasts a long time and produces a clear tone. The only reason for 4 stars is that the packaging was slightly crushed upon arrival.
Anonymous
Mar 01, 2026
Rating: 3/5
Good but hard to break in
The rosin seems high quality, but it took quite a while to break in and start transferring to the bow hair effectively. Once it did, the sound was good.
Q: Is this rosin suitable for a beginner violin student?
A: Yes, the OTTO MR-15 is excellent for students as it provides consistent grip and helps produce a clear tone easily.
Q: Can I use this on a viola as well?
A: Absolutely, this rosin is formulated to work effectively on violins, violas, cellos, and even Erhus.
Q: How long does one block typically last?
A: With regular daily practice, one block usually lasts between 6 to 12 months depending on playing intensity and bow hair condition.
Q: Does this product come with a cloth for application?
A: Yes, each rectangular block includes a protective cloth pouch which can also be used to wrap the rosin or clean excess dust.
Q: Is this rosin hypoallergenic?
A: While made from natural pine resin, we recommend testing a small amount first if you have known sensitivities to colophony.
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