Detail 01
Soprano/alto sizing
Cut to the width of soprano and alto add-on frames. Larger tenor-alto and bass instruments need different adapters.
Product detailSKU #1274115055307
Sonor OrffBT BasisTrolley Universal Orff Instrument Stand Adapters Ac1 Chromatic Adapter - Soprano/Alto
Independent shopping perspective
The Korena take
Adapter that mounts a soprano or alto chromatic add-on onto a Sonor Orff BasisTrolley stand. A mounting part, not an instrument.
Strong match
Who this is for
- Classrooms already running instruments on a Sonor BasisTrolley
- Getting a chromatic add-on off the floor and at playing height
- Keeping diatonic and chromatic halves aligned as one playing surface
Consider the trade-offs
When to look elsewhere
- Anyone without a BasisTrolley stand to attach it to
- Tenor-alto or bass add-ons — this pair is cut for soprano/alto
- Buyers expecting bars or an instrument for the price
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Chromatic adapter
Positions the accidental bars behind the diatonic instrument at the correct height and offset for playing across both.
Detail 03
BasisTrolley system part
Works only with the Sonor BasisTrolley. It is not a universal or generic stand bracket.
Detail 04
Sold as an adapter
You get the mounting hardware. The trolley, the diatonic instrument, and the chromatic add-on are all separate.
Final check
Know before you order
- 01No instrument, add-on, or trolley included — this is hardware only
- 02Confirm your add-on is soprano or alto before ordering
- 03One adapter set covers one instrument position on the trolley
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does this come with an instrument?
No. It is the mounting hardware that attaches a soprano or alto chromatic add-on to a BasisTrolley stand you already own.
02Will it work with a non-Sonor stand?
No. It is made for the Sonor Orff BasisTrolley and matches that stand's mounting points.
03Can I use it with a tenor-alto add-on?
No. This version is sized for soprano and alto. Larger instruments use a different adapter.
04Do I need tools to install it?
It attaches to the trolley's existing mounting points. Follow the included fitting instructions and check the connection before students play.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Soprano/Alto
