October 2011 - Six well known classical guitarists gave a concert on Bert Kwakkel's jubilee guitar number 500. This special event was organised by the Gelders Gitaristen Podium. The following guitarist performed during the concert: John Mills 
, Matthew McAllister , Cobie Smit / 
, Frank Lamm , Stefan Schmitz 
and Vadim Chebanov 
.
Armrest for classical guitars
These days, Bert Kwakkel increasingly integrates armrests into his concert guitars. An armrest offers several advantages:
- Sharp angle eliminated for even more playing comfort
- Right arm no longer damps the top
- Right arm slides naturally,
which stimulates playing with tone coloring
There are three types of armrests:
- body height increased
photo above
- body height decreased
photo will follow soon
- unchanged body height
photo below
Additional price armrest all types: €525
Armrests can also be fitted afterwards: €625