Boundary mic for grand piano

Date Updated: October 16, 2019 FAQ #1883
Question:
What boundary mic do you recommend for live sound reinforcement of a 10' grand piano?
Answer:

The Beta 91A if you require a boundary mic. The SM81 or KSM137 if a boundary mic is not required.

Also see:

Which microphone should I use on ... ? (Selection Guides)

Application Guides