Maybe old news but just saw a 15 watt head on the Randall site along with the Lynch Box.
RM20HB - http://www.randallamplifiers.com/products/amplifiers/mts/mtsheads.asp#
Lynch Box - http://www.randallamplifiers.com/products/amplifiers/mts/lynchbox/index.asp
RM20HB - http://www.randallamplifiers.com/products/amplifiers/mts/mtsheads.asp#
Lynch Box - http://www.randallamplifiers.com/products/amplifiers/mts/lynchbox/index.asp