My single ended pure class A amplifiers are perfect for any audiophile looking for a unique listening experience.  They are ideal for use in vintage audio systems and will provide an unparalleled sound quality.
 
These hand-built single ended mono amplifiers feature deluxe Orion power transformer, as well as Tamura brand single-ended inter-leaved output transformers. These transformers were made in Japan back in the 1960’s. They are superior in fidelity and quality to any transformers you can buy today. 
 
Each chassis size is 8 x 12 X 2.5"
 
        Some of the features these mono amplifiers offer:
 
1940’s Bud Electro Zinc using 20 gauge steel. Far superior to the thin chassis made today. We spend lots of time sourcing high quality parts.
ElectroCube audio grade Mylar capacitors
Point-to-point hand wiring, If other sellers do not show under their chassis it may be because they use overseas circuit boards. Not good.
WW2 vintage nickel over brass pilot lamp that will last forever
Superior brand 3-way banana plug speaker connector; easy to use and will not break or come loose.
1950's new-old-stock high voltage USA Military-grade surplus Amphenol tube sockets, that will last forever.
High-quality alumiumn volume knobs, with set screws. Not the cheap ones most people use that crack and fall off. 
 Hammond brand 2.5 volt filament transformers and Orion filtering chokes
Clean deck with no excessive screws, bolts, hardware or nuts showing. Open chassis not congested with tubes too close together.
Gold-plated high quality RCA input connectors. 
Heavy metal bottom chassis covers with heavy duty rubber feet
New-old-stock 6AX5GT rectifier tubes. They last and may be the best slow warm-up rectifier tubes ever invented. 6SN7 low mu triode tubes & two 45 output tubes
1960's Military grade new-old-stock hum rheostats.
 
These are the best sounding amplifiers available anywhere, at any price. 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 better sounding amplifiers.
 
I use some of the best parts in my amplifiers that were ever available REGARDLESS OF WHAT YEAR THESE PARTS WERE MADE. For instance, in these  amplifiers, I might use tubes from the 1930's,  transformers from the 1960's, tube sockets from the 1950's, and modern top-quality Alpha brand gain controls. I use the best parts I can source no matter what year they were made, and combine them for the perfect amplifier. I spend many hours hunting for these superior parts.
 
I started building my own amps because many of the new amplifiers people offer today do not hold any long term value, and quickly fall apart with normal use. The transformers may open up, or the Chinese tube sockets break; many times the RCA connectors come loose, or the screws that hold the speaker wires on can strip out most of the time these issues just cannot be repaired.
 
The other reason I build my own amplifiers is I can use some of the best triode output tubes ever made, in combination with my single-ended Class A output design. I can build Amplifiers that were never available or offered for mass production. I use 45 output tubes and low-mu 6SN7 triode tubes for sound quality, and to lower the chance of micro-phonics. This is what Brook and Fisher did in some of their best quality studio laboratory amplifiers.
 
To make these 1.5 watt amplifiers sound best you should run efficient 8-ohm smaller 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 amplifiers and it has the power to spare. These amplifiers 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. Like most things it is a trade off. What you loose in power you more than make up in fidelity. A trade off most audio guys are willing to make
 
To me, the most important part with my 45 tube triode amplifiers, is I am able to use 1960s vintage Japanese made Tamura output transformers.  These transformers give my amplifiers that magical sound that no other amplifier can match, and you can only get from a Class A Triode single-ended design. These are hand wound inner-leaved permalloy output transformers. These output transformers are designed for 8-ohm efficient speakers. They have a 5000-ohm primary which is perfect for the 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 an 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.