Thinking about it, it ain't half bad for an 8 string that only has the possibility of one + and one - per string and only two strings per pedal and no knee levers..
the fact that you can only sharpen and flatten a string once means that the open string tuning has to be the 'median value'...It's A7th (a tuning I hardly play at all)
This is my favourite copedent, (Developed in 1963) described in great detail by Jörg Schubert Here





