CROWN CTs 600 PROFESSIONAL POWER AMPLIFIER - LOAD IMPEDANCE 70V, 100V (2-16 Ohms). THIS AMPLIFIER IS IN VERY GOOD CONDITION INSIDE AND OUT. WE CLEANED ALL CONTROLS AND SWITCHES AND CHECKED IT OVER COMPLETELY. WORKS GREAT. (WE HAVE BEEN IN BUSINESS FOR OVER 60 YEARS REPAIRING VINTAGE AUDIO EQUIPMENT.) IF YOU HAVE ANY CONCERNS, PLEASE CONTACT US PRIOR TO YOUR PURCHASE.