Pianotech

Showed up to a nicely rebuilt B - this is a new issue within the last two months when the piano was last tuned and cleaned. There's a metallic ring/buzz/sound starting right at the first treble break and is gone by the 2nd break. 

When I heard it I thought it was the duplex so I put some braid through and it didn't help. No obvious issues with the bridge…it's most noticeable at C5/C#5 

There's some leaky dampers and unisons, but the buzz (hopefully the video audio is sufficient) has me at a loss.

I've shared this with my local techs and mentor and I'm hoping someone out here might have some ideas we can bounce around. 

thanks in advance! 

This looks and sounds like a capo buzz. Take a rubber mute and mute the front duplex to see if the buzz is reduced or eliminated. If so, you'll need to resurface/reprofile  the capo. Don't forget to reprofile the plate apron termination.

Showed up to a nicely rebuilt B - this is a new issue within the last two months when the piano was last tuned and cleaned. There's a metallic ring/buzz/sound starting right at the first treble break and is gone by the 2nd break. 

When I heard it I thought it was the duplex so I put some braid through and it didn't help. No obvious issues with the bridge…it's most noticeable at C5/C#5 

There's some leaky dampers and unisons, but the buzz (hopefully the video audio is sufficient) has me at a loss.

I've shared this with my local techs and mentor and I'm hoping someone out here might have some ideas we can bounce around. 

thanks in advance!