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.
 
Each chassis size is 8 x 12 X 3
 
Some of the features these mono amplifiers offer:
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.
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 broadcast-grade surplus Amphenol tube sockets, that will last forever.
High quality solid aluminum volume & rheostat knobs
 Hammond brand 2.5 volt filament transformers and Orion filtering chokes from Japan made in the 1960’s
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.
Vintage Military pilot lamps with 50 K hour Neon lamps, 1950’s Vintage
 
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 cannot 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.
 
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. Its ls like beautiful music floating in the air. 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 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 tradeoff. What you lose in power you more than make up in fidelity. A trade off most audio guys is 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.
 
My custom amplifier projects start off as raw Bud or Hammond brand metal chassis that I punch out, then sand and finish. I round and shape the corners, so they are smooth.  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. Each one is built one at a time in my one man workshop.
 
These amplifiers come with the used MADE IN THE USA 45 tubes you see in the picture. The tubes that come with this amp work great, but since they are old, maybe as old as 80 years, used and not new, consider them a FREE GIFT with the amplifier and not part of the auction listing. You may at some point need to upgrade to new or more expensive new old stock audio tubes-and I will leave that for the new owners to decide. Please keep in mind tubes like light bulbs do not work for ever.