The Vintage Kepco H B Regulated DC Supply Tube Power Supply, Model HB4A-M, is a high-quality DCV power supply perfect for electrical equipment and industrial use. With the trusted Kepco brand and series C46074, this power supply offers reliable stability and regulation for your power supply needs. Its vintage design adds a touch of nostalgia to your workspace while providing efficient and consistent power output.
Pioneer SM-70 SF-70 OD-240 Vintage Tube Amplifier Audio Set Power Tested. Rare vintage Pioneer 3-piece tube audio component set including the SM-70 stereo power amplifier, SF-70 electronic crossover network, and OD-240 control amplifier unit. Audio output and detailed functions have not been tested. The units show scratches, stains, oxidation and age-related wear consistent with vintage equipment. Only the items shown in the photos are included. Information for International Buyers.
Vintage RCA MI-9289-B professional tube power amplifier, offered in as-found and untested condition. The chassis is factory marked MI-9289-B and retains its RCA identification plaque marked Radio Corporation of America, Meadowlands, PA, serial number M2004. The amplifier appears largely original and unrestored internally, retaining its large transformers, meter assembly, controls, wiring, tube sockets, and extensive original-era components as pictured. The amplifier retains tubes in the chassis positions marked RCA-6SN7GT, 12AY7, RCA-6L6GC, and both RCA-0D3 positions. All four factory-marked 6550 output tube positions are empty. The installed tubes have not been tested and are included as found. Cosmetically, the amplifier shows considerable wear from age, use, and long-term storage, including dust, grime, oxidation, discoloration, scratches, and general surface wear throughout. The meter is present and the front controls move mechanically. No attempt has been made to clean or cosmetically restore the unit. Due to its age and apparently unrestored condition, I have not attempted to apply power to the amplifier. It is completely untested and should be inspected and serviced by a qualified technician prior to use. No representation is made regarding the electrical condition of the transformers, tubes, capacitors, meter, or other components. This is an exceptionally substantial piece of vintage RCA professional audio equipment and is being offered as pictured for restoration. Please review all photos closely for exact condition, configuration, components, and completeness. Items come from a smoke & pet free home. Reference the photos and description carefully to see the quality of the exact product you will receive. Please reach out with any questions!
Up for sale is a vintage H. Scott Type 232 monoblock tube power amplifier in working condition. The amplifier has been tested and produces audio output. The Type 232 is one of H. Scott’s classic high-fidelity monoblock amplifiers from the golden age of American tube audio. Known for its excellent build quality, substantial transformers, and outstanding sound performance, it remains highly desirable among collectors and vintage hi-fi enthusiasts. This amplifier retains its vintage character and appears largely original. It is an excellent candidate for use, restoration, or collection. Features. Vintage H. Scott Type 232 monoblock power amplifier. Classic American high-fidelity tube design. Heavy-duty power and output transformers. Vintage point-to-point wiring construction. Made in USA. Please review all photographs carefully, as they are an important part of the description and condition report. A desirable vintage H. Scott monoblock amplifier for collectors, audiophiles, restorers, and enthusiasts of classic tube equipment. We will reply you within 24 hours. (except weekends and holidays). All emails and orders will NOT be processed during weekends and holidays, orders will be dispatched only on Wednesdays to the continental United States. We will offer help to solve your problems as fast as possible. We are here to help! If get here it means that you read the entire description and saw all the photos, have a nice day and thank you for shopping with us.
FOR YOUR CONDERATION IS A. WEIGHT: 10 LBS 8 OZ. BENCH TESTED WITH MULTIMETER. CONTINUITY CHECKS OUT ACROSS ALL WINDINGS AND PRIMARY/SECONDARY VOLTAGES READ STRONG AND STABLE UNDER NO-LOAD TESTING. ALL LEADS IN GREAT SHAPE. SOME SCRATCHES ON CASING AS PICTURED. Built to power large commercial/theater tube equipment or massive multi-channel broadcast setups. To put it into perspective, a standard vintage guitar amplifier or hi-fi stereo amplifier usually only requires a 6.3V tap rated between 2A and 5A. A transformer pulling 15.5A + 2.5A is massive “industrial-grade iron” designed to light up the filaments of an entire rack of power tubes simultaneously. It was used to supply heater current for. Large Theater & Cinema Amplifiers: Legacy Altec/Western Electric style multi-tube sound systems designed for movie theaters (where multiple large power tubes like 807s, 6L6s, or KT88s ran concurrently). Broadcast/Radio Transmitter Gear: Station modulation equipment and multi-stage studio amplifiers. Massive Industrial Power Supplies: Centralized laboratory or theater sound system rack power bays. WILL BE PACKAGED WITH EXTREME CARE TO SURVIVE TRANSIT. ANY QUESTIONS, PLEASE ASK.
Vintage Triad R-200A power transformer, tested and working. Rated 115V primary, 400V C. At 400mA, plus two 6.3V 3A windings. Shows normal cosmetic wear from previous use.
This particular set tests as average / used and are fairly closely matched, with all 4 date codes the same. These should still have a nice amount of life left in them. The tubes’ test results are displayed in the photos New 6L6 Spec 100% = 6,0. See the photos for physical / cosmetic condition. Also, t he tube boxes are original reused RCA boxes, and not original to 6L6s or these tubes. Additional Note: The getter flash on one tube is quite a bit more faint than the others (the one testing 82% Gm), this is purely cosmetic since as mentioned above this tube still tests satisfactory and sounds nice. Notes Regarding Tube Tests. All tubes are tested on an Amplitrex AT-1000 tester in the automatic Fixed Bias Mode (for the most conservative results). Test Results are for a general reference only, and are not a guarantee of performance, nor a guarantee of how they will test on your tester. No real world (audio) performance measurements are taken.
Pioneer SM-70 SF-70 OD-240 Vintage Tube Amplifier Audio Set Japan Power On. Pioneer SM-70, SF-70 and OD-240 Vintage Audio Set. Rare vintage Pioneer tube audio components from Japan. Features. Pioneer SM-70 Tube Integrated Amplifier. Pioneer SF-70 Stereo Control Unit. Pioneer OD-240 Audio Component. Vintage Japanese Hi-Fi Equipment Included. SM-70. SF-70. OD-240. Only the items shown in the photos are included. International Buyers – Please Note. The price you see is the final amount.
