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This is a new recording with a KATO sound box, and the scale speed is set to about 300 km/h, calculated as 4-5 seconds for passing each other. Please consider the ping-pong sound as a charming ambient sound of passing trains on the platform (i _ i ) *There is something that looks like masking tape inside the tunnel, but we have left it as it is as we have determined that it does not interfere with the operation. #n-gauge #frontview #railroadmodel #diorama #train #shinkansen