A thought on safety with these low cost units, use a 3-wire power cord and tie the DC- output to Earth/Ground. Just a little extra precaution so you don't light up the talent (or yourself). -- Jerry Durand, Durand Interstellar, Inc. www.interstellar.com tel: +1 408 356-3886, USA toll free: 1 866 356-3886 Skype: jerrydurand