There's some info in the link bellow.
http://audiocircle.com/circles/viewtopic.php?p=42627&highlight=musician+iii&sid=80d52042b939041277a5b9888b3fe620#42627
http://audiocircle.com/circles/viewtopic.php?p=42627&highlight=musician+iii&sid=80d52042b939041277a5b9888b3fe620#42627