For ZENITH PHONOGRAPHS WITH COBRA ARMS…. TESTED & FOUND TO BE WORKING WELL… SPECIAL COBRA TONE ARM PRE-AMP. THANKS TO THE ENGINEERS AT ZENITH, YOU CANNOT USE A REGULAR PRE-AMP ON YOUR COBRA TONE ARM. YOU NEED THIS ONE. CONDITION: TESTED AND WORKING WELL. STRONG TUBE IN THE UNIT. WE HAVE MORE THAN ONE OF THESE UNITS. THE WEAR PATTERN MIGHT BE SLIGHTLY DIFFERENT ON THE UNIT YOU RECEIVE. ALL UNITS ARE GOOD. ALL PICTURES IN THE GALLERY SHOTS TAKEN DIRECTLY OF THE OBJECT FOR SALE. No reserve, Great Find! We specialize in 16 & 35mm equipment & film. The 35mm equipment we handle is generally from the birth of the industry through the mid-1960s. We also deal in 78rpm records & machines. See our m e page. I will combine invoices of items won over a 5-day period. The item “Vintage ZENITH PHONOGRAPHS WITH COBRA TONE ARMS part SPECIAL COBRA PRE-AMP” is in sale since Thursday, December 15, 2016. This item is in the category “Collectibles\Radio, Phonograph, TV, Phone\Radios\Parts & Tubes”. The seller is “bagheracat” and is located in Murrysville, Pennsylvania. This item can be shipped worldwide.