Yamaha Baritone Horn YBH831S SPYamaha YBH831S Neo Baritone Silver. Compensating System: The 3 valve compensating system is a traditional baritone type with an original tubing configuration for improved pitch compensation. By allowing breath to flow through the bypass tubes of valves that are pressed simultaneously with the third valve, pitch accuracy in the mid to low range is markedly improved. You can play in the normal way, without using a trigger or alternate fingerings, making