Williamson circuit built on a AMI R-145 chassis, with Unitran 6U38 output transformers. Improved version with vintage volume pot, they can be used without preamplifier, no more empty holes!! 5/8/16 & 400 OHM SPEAKER TAP! Extremely quiet on 100db speakers! NO TUBES INCLUDED IN THE SALE!!
Unitran 6U38 output transformers. PERFECTLY WORKING5/8/16&400 OHM SPEAKER TAP! NO TUBES INCLUDED IN THE SALE!! Those amplifiers are built on AMI R-145 chassis, I have Installed A Unitran 6U38 Output transformer and hand wired a better Williamson on the Heahtkit W5M schematic!
Offered for sale is a vintage pair of Williamson / Stancor mono block tube amplifiers with an outboard power supply. These amplifiers work and will need further parts upgrades to Perform at their best. From my understanding they were built many years ago by a naval officer during his shore leave. They sound amazingly good and deserve to be shared and listened to rather than sitting on the shelf. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “all-amped-up” and is located in this country: US. This item can be shipped to United States.
BEAUTIFUL PAI OF THE BETTER WILLIAMSON!! BUILT ON THE AMI R145 AMPLIFER, USING TH UNITRAN 6U38 OUTPUT TRANSFORMERS. PLAIN POLISHED IRON CHASSIS, WITH A 24/7 OPERATION POWER TRANSFORMER. EASY ACCESS CATHODE BALANCED CIRCUIT. OUTSTANDIG QUALITY DUTCH OUTPUT TRANSFORMERS, WITH A 400 OHM SPEAKER TAP. NO TUBES INCLUDED IN THE SALE. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “w.s.sound” and is located in this country: IT. This item can be shipped to United States, Germany.
One pair of Heathkit W-5M in working condition. The testing performed was the bare minimum to confirm whether working or non-working and lasted less than a few minutes. I put a pair of 5881 tubes into each and ramped up line voltage on a variac. The results of that brief test are below. Amp 1: played music at 80V line voltage and above. At 80V it drew. 5A of line current. At 90V it drew an amp of line current. No further testing was done. Amp 2: played music at 80V line voltage and above. At 100V it drew. At 120V it drew. 75 amp of line current. No output tubes are included with this listing. Both amps have the tubes shown in the photos. These are a good candidate for a restoration this winter. The tests show that some parts are out of spec but that all of the iron is performing as expected. Both have the more desirable Peerless 16309 nickel core output transformers. Plenty of information about these amps is available online and repairs parts are readily available from a variety of sources. These are offered in as-is, as-pictured condition for parts, repair or restoration. The item “Vintage Heathkit W-5M tube amp pair Williamson circuit” is in sale since Sunday, October 13, 2019. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “widerangesound” and is located in Essex, Maryland. This item can be shipped to United States, Canada, United Kingdom, Denmark, Finland, Australia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Belgium, Hong Kong, Ireland, Netherlands, Germany, Austria, New Zealand, Singapore, Switzerland, Norway, Malaysia, Bangladesh, Bermuda, Bolivia, Iceland, Sri lanka, Luxembourg, Macao, Maldives, Pakistan, Uruguay.
This is not “a” Williamson Amplifier, this is “THE” Williamson Amplifier. The British made original whose circuit design became the de facto standard for push-pull HiFi amps. Complete with power supply unit and umbilical cord. A few resistors and capacitors appear to be changed out, but largely these units are original and in remarkable shape for their age. They came from the estate of a local old school TV repairman. There simply are none available to compare. I can’t even find a picture of a complete unit like the one I have here. This should be in a museum or serious collection. I have not plugged these in, and I will not. This is something that needs to be carefully restored by an expert. I have no reason to believe that the amp doesn’t work, as it was found hooked up to a speaker. I will listen to serious offers, but would also just appreciate advice on how to determine a value for this. The amp can also be inspected in person in Baton Rouge, Louisiana, USA. Thanks for looking, I can take more detailed pictures as needed. The item “The Williamson Amplifier, Vintage Original British Made KT66 Tube Amp” is in sale since Sunday, April 29, 2018. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “epador” and is located in Baton Rouge, Louisiana. This item can be shipped to United States.
