No I did not use Photoshop to stretch the photo.
Its a newly designed soundbox. I can't remember, but I thought he said something about drawing inspiration from the sound physics of a cello.
I tried it and t sounds surprising good. The notes are clean, resonant and the high notes of the outer and inner string sounds clear and penetrative.
They've got lots of funny shaped Erhus as well that really sound not bad at all....
