1 Custom Single - Ended Vintage 45 Tube Amplifier Tamura Transformers 120 Or 240 V




Item History & Price

Information:
Reference Number: Avaluer:487671Non-Domestic Product: No
Custom Bundle: NoModel: Tamura Transformers
Type: Power AmplifierModified Item: No
Brand: custom hand madeCountry/Region of Manufacture: United States
UPC: Does not apply
Original Description:
Single-ended custom 45 triode tube stereo class A audio amplifier with Tamura transformers
This hand-built stereo amplifier features: A deluxe Tamura power transformer that offers many AC voltage options. See last picture of the power transformer.This is my first green color amplifier. I like the color let me know what you think? This is also a 2" high chassis I like the lower profile. On this amplifier I am not using the combo ac plug in, off/on switch..., fuse unit. Those items are all separate on this amplifier. 
Chassis size is 17" x 8" X 2"
Bud brand heavy all steel chassis to better support the transformersElectroCube audio grade Mylar capacitorsPoint to point hand wiring, with no circuit boards that are difficult to repair and often go bad. If other sellers do not show under the chassis it may be because they use overseas circuit boards, which will go bad.two gain controls -- one for left and one for right hand. These are Alpha professional brand studio audio gain controls. With one for each channel you can use them like a balance control only better.Vintage Military grade surplus hum rheostatTop of the line Tamura brand power transformer -- The Tamura power transformer in this amplifier is a 1960 vintage. It has a large heavy copper band shield around the windings to eliminate hum. It is one of the best power transformers ever made. If they were to reproduce a transformer of this quality today, the cost would be no less than 300.00. Many power transformers are under such a load, they get so hot you can not touch them. Not with this it is a commercial grade unit, and can run all day and just get warm. Surplus vintage Military plated brass off/on pilot lamp light fixtureThis amplifier offers input voltages of    240, 220, 120, 110, and 100 volts.    Just tell me what voltage you use and I will set the transformer to that voltage before I ship the amplifierSuperior brand speaker 3 way connector, that will not break or come loose. Solid copper buss bar ground strap wire. High voltage US Military grade surplus Amphenol tube sockets, that will last forever, Not the ones from China that fall apart with normal use.High quality spun all aluminum volume knobs, with set screws. Not the plastic ones most people use that crack and fall off. New Hammond Canada brand filter choke and 2.5 volt filament transformer. Not Chinese transformers that are low quality.This is the best sounding amplifier available anywhere, Single ended with Tamura transformers. The 45 tube is the most musical tube ever invented,  Beautiful clean clear highs and warm but very crisp bass. You will notice the difference the second it comes on. You can pay more but you can not purchase a better sounding amp. Audio collectors have ask that I use the ultimate studio grade Tamura power transformer, that offers many input AC voltages, so I built this special amp for you. The amplifier is now set for 120 volts for the USA but if you would like a different voltage just tell me before I ship the amplifier and I will change the wiring for the voltage you require.   I use some of the best parts that were ever available regardless of what year these parts were produced. Like in this amplifier, I might use tubes from the 1930's,   transformers from the 1960's, tube sockets from the 1940's, and modern top quality Alpha brand gain controls.  I started building these amps because many of the new amplifiers people buy today do not hold any value and just fall apart with normal use --  their transformers open up, or the tube sockets break, or many times the RCA connectors come loose, or the screws that hold the speaker wires on strip out -- most of the time they just cannot be repaired. Most of the so called hand made amplifiers sold today may have only one part made in the USA,  They say assembled in the USA, but most of the parts are low quality from China. I only hand wire point to point connections in my shop my self.  The other reason I build my own amplifiers is I can use some of the best triode output tubes ever made, in combination with a single-ended Class A output design. I can build Amplifiers that were never available for mass production. I also use low-mu triode tubes for sound quality, and to lower the chance of micro phonics like Brook and Fisher did in some of their best quality studio laboratory amplifiers. I use new Alpha gain controls for each channel. That way they can act like a left & right balance control only better. You can hook your I-pod,  CD player, Am or FM source or phone directly to this amplifier, and that is all you need for great music. This auction is for one of the best sounding amplifier designs I have ever made -- my triode 45 amplifier with Tamura output and power transformers.  I have sold similar 45 triode tube amplifiers on eBay in the past, and the eBay feedback comments went like — "WOW! best amp ever” — "This is the best watt I have ever listened to",  "Only one way to describe the sound of this amplifier: breathtaking". Great sounding amp ~ Good packing ~ Excellent service ~ Thank you!!!  And most recently " Amp has superb build and sound transparency that reveals deeper layers of music". This amplifier will put out about 1-1/2 watts per side to 8-ohm speakers (remember it is the first watt that counts).  To make this amplifier sound best you should run efficient 8-ohm vintage speakers, like Klipsch, JBL Tannoy, Jensen, Altec and other speakers rated around 20 watts or less. My son runs a pair of Klipsch Heresy with his identical amplifier and it has the power to spare. This amplifier will not rattle the windows with power, but at normal listening levels it will amaze you, and fill a room with plenty of great sound. To me, the most important part with my 45 tube triode amplifiers, is I am able to use vintage Japanese made Tamura power transformers and Tamura output transformers. These transformers give my amplifiers that magical sound that no other amplifier can match and you can only get from Class A Triode single-ended design. Tamura no longer makes these transformers and the ones I used in this amplifier were made back in the 1960's. These are hand wound inner-leaved permalloy output transformers, and they produce a magical sound that you cannot get from any other transformers. The output transformers are designed for 8-ohm efficient speakers. Sellers that tell you that it does not matter what ohms speakers you connect to their amplifiers are wrong. You should only connect the proper ohm speakers to the corresponding connection.  These Tamura output transformers have a 5000-ohm primary which is perfect for the SE 45 tubes. Some sellers will say you can use several different numbered output tubes in their amplifiers. If that were true transformer manufactures would  not need  to build transformers to match up with the exact output tubes, they could just make a couple of output transformers that would work for many tubes. A 2A3 tube amplifier should have a primary transformer that is 2500 ohms. The 45 tube requires a 5, 000 ohm output transformer. You cannot have a output transformer that would be the perfect match for a 45 and at the same time a perfect  match for a 2A3 tube. It would be a bad mismatch for either the 45 or the 2A3 or maybe both. When you match up the correct Tamura output transformer  to the correct triode tube you get those crystal clear highs and the  very clean bass punch you have been looking for.  My custom amplifier projects start off as raw Bud brand metal chassis that I punch out, then sand and finish. I round and shape the corners so they are smooth. This amp is all hand wired,  point-to-point,  by me, I never would use a circuit board, so any part that might fail many years in the future would be easy to purchase and replace. You will enjoy the heavy, quality feel of this amp, the smooth rounded edges on the chassis, and the quality hardware nuts & bolts using lock washers securing the parts. The 8-ohm speaker connections on the back are better quality than with most amplifiers even those costing more money.  It takes me about one week to build one of these from start to finish, and longer to source the vintage top quality parts I want to use. I am an electronics Nerd so to me it is not just an amplifier but an art form, it must look as good as it sounds. This amplifier comes with the used MADE IN THE USA tubes you see in the picture I DO NOT USE THE CHINESE NOCK OFF TUBES. The tubes that come with this amp work great, but since they are old and used and not new, consider them a FREE GIFT with the amplifier and not part of the auction listing. You may someday want to upgrade to new or more expensive tubes and I will leave that to the new owners.   




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