HERE IS A VERY NICE DYNACO MKIII MONO BLOCK KT88 TUBE AMPLIFIER. AFTER IT HAD WARMED UP FOR MANY HOURS IT DID PLAY MUSIC FOR A SHORT TIME BUT WHEN I INCREASED THE VOLTAGE SLIGHTLY TO GET A CLEARER SOUND SOMETHING CUT OUT AND THE SIGNAL STOPPED BUT TUBES STAYED LIT... TUBES INCLUDE: (2) kt88, (1) rca 5v4, (1) PREAMP TUBE? I TESTED THE MULLARD KT88 TUBES ON MY UNCALIBRATED TV7/U.THEY TESTED GOOD AT 64 AND 64 WHERE 44 IS MINIMUM GOOD. MULLARD TUBES HAVE 3 GETTERS AS SHOWN. SOME RUST AS SHOWN, HAS OVERHEATED AT POWER OUTPUT, POWER CORD NEEDS REPLACING. The item "DYNACO MK III MONO BLOCK KT88 TUBE AMPLIFIER MKIII" is in sale since Thursday, March 12, 2020. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "yodli13" and is located in Detroit, Michigan. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.