Vintage 1970 Dynaco Dynakit Mark III Monoblock Tube Amplifier Serial Number 3111826 with Spare Set of NOS Tubes. IT WORKS!!! The identification stamp (1377040) on the bias adjustment indicates that the potentiometer, part number 137 was manufactured on Monday, February 9th, 1970 (the 40th day of 1970). Since, Dynaco went through parts regularly, it is fairly safe to assume that this unit was manufactured early to mid 1970. This amp was last used in the early to mid 1980’s and has been in storage ever since. I believe it is all original, except for the RCA input, which has been replaced with a 1/4″ type jack. I also noticed that the strain relief on the power cord is not present. I am not sure why, but the power cord should probably be replaced, anyway. It is still in good condition with no nicks or cracks, but it does feel a little stiff. This unit was predominately used to drive the tweeter horn section of a large 3-way PA system for most of it’s life, only producing frequencies above 2500Hz. I was pleasantly surprised to see that it started right back up where it left off almost 40 years later. I tested it with a single 4ohm Tannoy Reveal speaker, connected to the 4ohm tap. THE TANNOY REVEAL IS NOT INCLUDED IN THIS LISTING AND NO FURTHER TESTING WAS DONE. I posted a video of this test in the picture section. There is a spare set of (2) 6550A’s (1) 5AR4/GZ34 and (1) 6AN8A new old stock, never used, Made in U.S.A. General Electric Tubes that have been stored in the same zip lock bag since day one (1970). There are normal scratches, blemishes and cosmetic wear from use, along with some rust from age. All of my listings are sold AS-IS, so please inspect all of the pictures carefully to determine the item condition for yourself. Remember it is 53 years old and like all old electronics, it may behave unexpectedly. It will be over-packed with plenty of bubble wrap and shipped with insurance via U.P.S. unless you prefer a different method. Thanks for looking!! Here is what Ebay A.I. has to say about this amp: This vintage Dynaco Dynakit Mark III monoblock tube amplifier features a powerful sound that is sure to satisfy any audiophile. Made in the United States, this classic piece of audio equipment is perfect for anyone looking to add a touch of vintage charm to their home entertainment setup. It includes a spare set of tubes so you can enjoy your music without worrying about replacements. With its sleek design and impressive performance, this tube amplifier is a great addition to any collection of vintage electronics. Whether you’re a music lover or simply appreciate the nostalgia of classic audio gear, this Dynaco Dynakit Mark III is sure to impress. Don’t miss out on the chance to own a piece of audio history!
Item Tag: MK III
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Pair of Dynakit Mark III with extras
Pair of Dynakit MK-III that I lovingly restored in 2001, as you see for yourself every screw, jack, washer, socket, has been changed to modern equivalent components. Grading at 8 on scale of f0 because of the age, otherwise in immaculate shape anf function as seen in the pictures.- Transformers are all original and look brand new, no dings, no blemishes.- Chassis are new with heavy plating and perfect silk-screened letters, you can see the perfect shine and reflection in the close ups. The cages are the originals.- These units have the SDS power supply board incorporated inside the chassis, I kept the original quad-section capacitors in place to maintain the original look of the units. The bias is rock solid.- The driver boards are also the modern equivalent, no modification to any of the circuits whatsoever.I simply have collected way too many pieces of audio over the years and it is time for the next generation to enjoy these legendary amps, you will not find another fully functional, solid and non-molested pair easily.These tubes are included:- Quad matched set of Gold Lion KT88 from Uncle Kevin at Upscale audio, less than 50 hours on these- Full disclosure: 1 of these had a broken guide pin that I glued back, perfectly functional tube.- A Trio of Winged C Svetlana KT88, again, less than 50 hours on these- 1 Raytheon 5AR4- 1 JJ 5AR4- 3 RCA 6AN8- 1 Sylvania 6AN8- 2 JHS 6AN8- Buyer pays for shipping and insurance- Payment method: Paypal – Will drive a reasonable distance from Dallas to meet and deliver