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matched pair UTC H-21 Tube Input Interstage 1950s scope matched tested 1950s

List price: $300.00
$275.00
You save: $25.00 (8%)
transprtutce16783
In stock
+ −
Add to wish list

A really nice matched pair of UTC Input & Interstage transformers … Milspec version of the H-21 (Hermetic sealed series). Both units were tested with audio signals and observed on a scope to be well matched with good response, as these are known for. Introduced in the early 1950's to provide the USA military with rugged, sealed, and hi-fi performance similar to the A, HA series. The H series was amongst UTC’s best rated ruggedized compact transformers..excellent today for audiophiles and recording professionals.

These appear to have the exact same performance and specifications of UTC's listed H-21 model, 15,000 primary to 80,000 secondary -- both of these were measured with an audio signal (see included test sheets) -- they both test GOOD and well matched. They  re guaranteed safe arrival and NO DOA.

UTC's H-Series military, audio grade ...always costly -- premium quality and widely used during the heydey of early tube audio recording an playback -- reliable, and well documented interstage and input applications. Compact in in size, and perfect for various interstage and input tube audio -- the split secondary adds to the versatility -- allowing these to be used for phase splitting in parafeed circuits.  Early black UTC's are now very sought after as -- they're great to use or collect for to many tube audio projects to name. 

If you are looking to get into vintage transformers, early UTC is always a good place to start -- these are the real McCoy and known good performers. And earlier is best -- the early 1950's era produced the finest quality and most beautiful looking and sounding of this series. 

These nice transformers include the papers shown, along with UTC info for the H-21. 

Tested by audio signal, and scope matched on both units (see papers in photo exhibit), swept 10hz to 20k-- a very nice wonderful functioning, matched performance pair, in every way I could see . Paint is fair, and has many minor nicks, chips ans cosmetic flaws from storage, normal for age. Welded, sealed terminals are nice, tight, no cracks.  They present nicely-- these are the old ones, from the first production back in the early 1950s and nice looked after units are getting scarce -- this may be the only set online to buy -- and they are nice, tested and well matched -- Buy Now to avoid a bidders war, they will sell quickly. 

Reliable performance is assured with these, they are guaranteed no DOA and will be packed in a double box to assure safe arrival. 

 Overseas buyers welcome, all vintage audio customers give us 100% feedback, you’re happiness is assured. Combine items for lowest price shipping (If purchasing multiple items, please email first and I will send custom invoice through ebay). 

 

All vintage USA audio 1930s ~ 1980s

Save 8%

matched pair UTC H-21 Tube Input Interstage 1950s scope matched tested 1950s

List price: $300.00
$275.00
You save: $25.00 (8%)
transprtutce16783
In stock
+ −
Add to wish list

A really nice matched pair of UTC Input & Interstage transformers … Milspec version of the H-21 (Hermetic sealed series). Both units were tested with audio signals and observed on a scope to be well matched with good response, as these are known for. Introduced in the early 1950's to provide the USA military with rugged, sealed, and hi-fi performance similar to the A, HA series. The H series was amongst UTC’s best rated ruggedized compact transformers..excellent today for audiophiles and recording professionals.

These appear to have the exact same performance and specifications of UTC's listed H-21 model, 15,000 primary to 80,000 secondary -- both of these were measured with an audio signal (see included test sheets) -- they both test GOOD and well matched. They  re guaranteed safe arrival and NO DOA.

UTC's H-Series military, audio grade ...always costly -- premium quality and widely used during the heydey of early tube audio recording an playback -- reliable, and well documented interstage and input applications. Compact in in size, and perfect for various interstage and input tube audio -- the split secondary adds to the versatility -- allowing these to be used for phase splitting in parafeed circuits.  Early black UTC's are now very sought after as -- they're great to use or collect for to many tube audio projects to name. 

If you are looking to get into vintage transformers, early UTC is always a good place to start -- these are the real McCoy and known good performers. And earlier is best -- the early 1950's era produced the finest quality and most beautiful looking and sounding of this series. 

These nice transformers include the papers shown, along with UTC info for the H-21. 

Tested by audio signal, and scope matched on both units (see papers in photo exhibit), swept 10hz to 20k-- a very nice wonderful functioning, matched performance pair, in every way I could see . Paint is fair, and has many minor nicks, chips ans cosmetic flaws from storage, normal for age. Welded, sealed terminals are nice, tight, no cracks.  They present nicely-- these are the old ones, from the first production back in the early 1950s and nice looked after units are getting scarce -- this may be the only set online to buy -- and they are nice, tested and well matched -- Buy Now to avoid a bidders war, they will sell quickly. 

Reliable performance is assured with these, they are guaranteed no DOA and will be packed in a double box to assure safe arrival. 

 Overseas buyers welcome, all vintage audio customers give us 100% feedback, you’re happiness is assured. Combine items for lowest price shipping (If purchasing multiple items, please email first and I will send custom invoice through ebay).