First I must say this cabinet looks amazing, and this was the reason I bought it, for the looks. The build quality is very good. The stock speakers sound ok , but since I play only rock and metal , I change them with a Vintage 30and a G12-T75 and it sounds fuller now with a bit of extra bass. The construction is not from plywood, it is HDF board for the speaker support and PAL material for the rest. I play it on low volume so for me I did not notice a sound difference, it sounds really good. It looks really nice in the Livingroom with the DSL 20 head