Dear José María, thank you again for your great ideas. I am very enthusiastic about your products.
Many thanks for your astounding innovations! Your researches and realizations truly improve the sound release in my double bass. The FASTER Artica 500 Titanium endpin is excellent because it makes the flow of sound more fluid, and the BELTON Mini and BELTON SOLO passive amplifier models make a huge difference as well. We have here two improvement assets, easy to carry anywhere, totally worth it.