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 amplifiers have twice the power over my famous 45 tube amplifiers. The 2A3 tube is a basically a pair of 45 tubes In the same glass envelope, so you have 3 watts instead of the 1.5 watts you get from a 45 tube in single ended class design. 
 
These hand-built single ended mono amplifiers feature deluxe Stancor power transformers, as well as hand built C-core output transformers. They also offer 1950’s vintage USA built filament transformers and HP chokes.
 
Each chassis size is 10” 12" X “3. These are larger vintage chassis over what we normally use. The chassis are New Old stock BUD brand. They were made back In the late 1940’s and early 1950’s, using Electro Zinc steel. I chose them for this project as they are much thicker than what you can purchase today. Due to the weight of these amplifiers the heaver chassis work well.
 
        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.
Vintage NOS Falco Neon 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 ceramic 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. 
 Stacore 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 2A3 output tubes
1960's vintage Military grade new-old-stock hum rheostats.
 
These are the best sounding amplifiers available anywhere, at any price. The 2A3 tube is one of 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. 
 
The 2A3 tube came out in the late 1930’s. It provides twice the watts as the 45 tube. If you look down from the top of the tube you will see that the 2A3 tube is just two 45 tubes in the same glass envelope, so twice the power but the same great fidelity.