The only group 4 (50Hz) Sola HD on EBay.
http://cgi.ebay.com/EGS-Sola-Constant-Voltage-Power-Conditioner-63-23-775-8_W0QQitemZ400038861928QQcmdZViewItemQQptZLH
Way over your needs, even if you went to balanced AC output. 480 lbs!
http://cgi.ebay.com/EGS-Sola-Constant-Voltage-Power-Conditioner-63-23-775-8_W0QQitemZ400038861928QQcmdZViewItemQQptZLH
Way over your needs, even if you went to balanced AC output. 480 lbs!