Ryoji Matsuoka M50 Handmade Classical Guitar (1981)This is one of the best guitars in my collection. It's a performer's guitar. I have set the action to 3. 75mm on E6 to get a wider dynamic range and 2. 75mm on E1 for fast playing on the treble strings. The standard string setup is 3. 5mm on E6 and 3. 0mm on E1. Although it is lower in model number compared to the M70, M80 and M140, it is a much higher grade in terms of sound quality. Also featuring professional tuners for precise and smooth tuning.