The A1SG is our flagship model. It has the best response and resonance of all A1 series. With Glass filled polycarbonate (G = Glass ) on body and neck it increased the density up to around 30%. Beside the gold colored silicone pads, all springs and screws are 24K gold plated. What we are proud to present is the solid gold leaves that filled in our logo was done by using the old traditional Thai method exactly the same way we did over 300 hundred years ago. Only 25 pieces were made.