Normally it's not advisable, but I don't agree in this case. I tested the Sounddock portableagainst JBL Control 2 PS and against Genelec 6010 and 8020 studio monitors. In relation to its weight it has a fantastic output for piano sound. Why should I only follow the manufacurer's desires for what purpose I use a product for? If it serves the purpose for something else that perfectly, I use it for that purpose.