Decide whether to keep a split Sonos S1 and S2 system
Inventory product generations, preserve room-grouping requirements, and choose one S1 system, a deliberate split, or replacement before running removal tools.
Direct answer
The shortest reliable path.
Check every product in Sonos’s current app-compatibility list before changing the system. S1-only products can stay together in an S1 system. Products compatible with both apps may stay on S1 or move to the current Sonos app. A split S1/S2 setup is supported, but the systems use different apps, cannot group rooms across the split, and can encounter content-service and voice-account limits. Keep a split only when those limits fit the household; otherwise keep compatible rooms together or replace the S1-only products that block the required grouping.
System view
Check the whole path.
- 01Exact Sonos product generation
- 02S1-only / either-app / current-app class
- 03Required room groups
- 04Service and voice limits
- 05One-system, split, or replacement decision
Scope before steps.
Households with a mix of Sonos products that are S1-only, compatible with either app, or require the current Sonos app.
Recommending a replacement speaker, recovering an unknown Sonos account, unsupported downgrade procedures, network troubleshooting, or guaranteeing a music service’s account policy.
Procedure
Do this in order.
- 01
Classify every product
Match each exact generation against Sonos’s three current groups: current-app only, compatible with both apps, and S1 Controller only.
- 02
Draw the required room groups
Mark which rooms must group for whole-home playback, home theater, shared alarms, or daily routines.
- 03
Check account and voice constraints
Review single-stream music-service limits, direct control, and voice services for two separate systems before accepting the split.
- 04
Choose one of three stable layouts
Keep all compatible products on S1, split independent rooms into S1 and current-app systems, or replace S1-only products so required rooms can remain in one current system.
- 05
Change the system only after mapping it
If splitting, follow Sonos’s current removal and separate-system procedure, then re-add services and verify every room in the intended app.
Diagnostic matrix
Read the result, not the guess.
| What you see | Check next | What it means |
|---|---|---|
| A product is S1-only | Keep it in the S1 system or replace it; do not expect it in the current app. | Its compatibility class is a hardware-generation boundary. |
| A product supports both apps | Place it where grouping requirements are strongest before changing versions. | It provides flexibility but cannot bridge live grouped audio between two systems. |
| Both systems can play separately but not together | Confirm each room appears only in its assigned app. | That is a documented split-system limitation, not a discovery fault. |
| Starting a service on one system stops the other | Review the service’s simultaneous-stream and account rules. | Sonos documents single-stream limits across split systems. |
Stop conditions
Know when not to keep changing things.
- Do not factory-reset products or run Product Removal Tool until the inventory and target room groups are recorded.
- Do not assume similarly named Connect, Connect:Amp, Play:5, Sub, or One products share the same app compatibility; verify generation.
- Contact Sonos before changing a system with irreplaceable local-library, voice, alarm, or accessibility dependencies that have not been reproduced elsewhere.