Schlagwerk CP4007 Cajon La Peru - Burl Veneer Burl Veneer Front Plate Body Constructed of 7 Ply's of Alder This Cajon Produces a Rich Bass and Strong Mid-Range Tones La-Per technology is based on special Cajon strings, whose individual sounds can be adjusted with the help of tuning screws located at the base. The playing surfaces are supported by bases made of optimized woods.