It's few ms. You can notice it if you put 2 cabs, one the the original and one with clone, next to each other. Sitting between both you can hear a slight delay (i would say 25ms).
This setup is quite common for racing cab (twin or more) but for us the easiest solution was to replace every originals with clones.
Not only it fixes the delay problem, but we were sure the original board would break one by one. Also sound quality is better with the clone (CD track encoded to MP3 vs low bitrate MPEG2) so it ensure every cab got clean sound. For sure it's not a big improvement as motor noises cover this while playing but still a good feature.
This setup is quite common for racing cab (twin or more) but for us the easiest solution was to replace every originals with clones.
Not only it fixes the delay problem, but we were sure the original board would break one by one. Also sound quality is better with the clone (CD track encoded to MP3 vs low bitrate MPEG2) so it ensure every cab got clean sound. For sure it's not a big improvement as motor noises cover this while playing but still a good feature.