Spark amp does not support real PCs
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There is no software to control the spark amp from a real PC, as it is used for recording or on live events.
Positive grid does not publish an open API, so users could remedy the unavailable support.
( Be aware of: smart-phones are not a stable or reliable platform at all ! You are not even adminstrator of your own phone ! Operating system updates can make your apps unusable or break continued support, because vendors of apps do not longer update your apps ! )