Vintage Tube Amp

Light wear as pictured.

When new, this amplifier was built from a kit. I found the ad (photo #9) in an Allied Radio catalog for 1958. In those days phonographs and even FM tuners were monophonic. So this amp has just one channel. Your signal source can be mike, tape deck, or phonograph. Many choices of input and equalization are available. Output to one hi-fi speaker with impedence of 4, 8, or 16 ohms. For the demo video an RCA 45 changer is shown, but only the amplifier is for sale. The amp has 6 tubes and the clean output power is 18 watts RMS. Photo #13 shows the tape out jack and access hole for V1 on the bottom. #11 input jacks; #12 speaker terminals.

Knight Intl Vintage Tube Amplifier Original Clean Estate Find Allied Chicago IL. Just found in a local estate. It was an older woman and she did use it. I plugged it in and the tube lit up, but I’m not sure if it works or not. It has its RCA tunes. I’m pricing it low.

WITH ATTACHED POWER CORD.

Reproduction Knight Broadcaster kit. NOTE : We sell two versions of this kit, a point-point wired version like the original in this listing, and our NEW, easier assembly, PC board version. See our other listings for that version. In addition to the gallery photos, this listing has extra photos with captions in the body below, scroll down to see them all. Kit comes with dual 115/230 volt primary transformer, for people in countries requiring 230 volts operation. Kit does not include tubes. Kit includes a BONUS audio input board! The Knight Broadcaster was meant to be used with low level microphone inputs. High level signals will distort the output, unless the input is attenuated. To ease this problem, as well as improve connectivity to audio sources, we have designed an accessory input control board. The kit includes a small 2-3/8 x 2-3/8 PC board (same blue color), to allow easy connection of bare wire, RCA, or 3.5mm jack inputs! The board also features an isolation transformer, if you experience hum problems. See photos in listing below. This is a reproduction kit of the Knight Wireless Broadcaster – Amplifier. High level inputs can be from a MP3 player, iPod, iPhone, cassette player, etc.. The kit also functions as a PA (Public Address) style audio amplifier, and has connections you can hook up a loudspeaker too. This is a custom produced kit, and has no economies of scale, and is therefore more costly than the PC board version. The kit is electrical equivalent to the original, with several minor changes. Our design includes a brand new, high quality, Triad isolation transformer. Appropriate changes has been made for mounting the transformer on the back, and for internal wiring. We have replaced the selenium rectifier with a modern diode. The kit comes with a prewound oscillator coil. As shown in the internal wiring photo, modern filter capacitors, smaller rectifier diode and oscillator coil, give easier and increased assembly and working room! To keeps costs as low as possible, the kit does NOT come with tubes. The tubes (two 50C5 and one 12AX7) are common types, and readily available from many sources. We have gone to great effort, time and expense to acquire vintage style components, like those used in the original design. As shown in the parts photos, the kit currently uses vintage parts, including carbon composition resistors (may be vintage or modern manufacture), phenolic wafer tube sockets, vintage terminal strips, and a vintage compression tuner capacitor. As time progresses on, these parts become harder and harder to find, and at some point may be replaced with modern equivalents. Until otherwise noted, the kit will come with the vintage parts just mentioned. The prototype in the photos used a couple carbon film resistors, but kits will come with ALL carbon composition resistors. The kit now uses black oxide screws to assemble the panels, instead of the costly blue screws shown in the photos. Style of output transformer may vary, depending on our stock. NOTE: This kit requires good electrical and mechanical building skills, and is recommended for advanced builders. Some mechanical modifications are required, such as cutting the metal potentiometer shaft to the correct length, enlarging the tube sockets holes, etc.. The kit is constructed with individual fiberglass panels for the top, front, back and sides. These are fiberglass printed circuit boards, with high durability lettering. The bottom panel is an acrylic or similar plastic material, it’s color may vary or be clear. The parts are connected by plastic brackets and screws, as you can see in the internal view photo. The original manual is supplied as a PDF file on a CD-R. An addendum assembly file is supplied as a RTF file on the CD-R. Note we do not supply copies of manuals. The kit is only for sale people with experience building and operated line powered devices. The kit must be operated under FCC Part 15 regulations at all times. This unit must only be operated with the supplied line isolation transformer. Not for sale to, or use by minors. It is assumed that the unit(s) will be installed and operated by qualified personnel. See our other listings for more Radio, Electronic and other RARE and UNIQUE items. NOTE : The flat and reflective surfaces cause some reflections in the photos. Vertical’lines’ on the front panel are reflections from the corrugated cardboard the unit was photographed on. With fiberglass panels and stainless steel hardware, your kit will look good for many years! Kit now features black oxide panel connecting screws, not blue screws shown in photos. Modern filter capacitors, rectifier diode and smaller coil, give increased working room. Kit now uses PC mount RCA jacks, see text. All kits now come with 115-230 volt, dual primary transformer. CD-R with original manual, and addendum instruction file. Accessory input control board now included with kit. Board provides RCA, 3.5mm jack, and screw terminal input connections, level control, and isolation transformer. Board can easily mount to panels if desired, see above and below photos. See our other listings, for the PC board version of this kit. See our other listings, for our much lower cost, miniature tube transmitter. For people interested in Heathkit projects, see our reproduction CR-1 crystal radio kits (standard and low cost versions), and our EXCLUSIVE PC board kits in the photo below. See our other listings for our EXCLUSIVE PC board kits. Powered by SixBit’s eCommerce Solution.

Plugged this into the wall and the unit does power on, tubes glow, but not sure if it still functions. Please ensure this is what you’re looking for. Please message for any questions.

UP FOR SALE IS A. Vintage Knight KNI 935 TUBE AMP!!! A MUST HAVE FOR ANY COLLECTOR. UNIT IS PRE OWNED BUT IN GOOD CONDITION. PLEASE SEE PICTURES FOR EXCAT CONDITION. FEEL FREE TO MESSAGE IF YOU HAVE ANY QUESTIONS.

I’ve had this one so long I don’t even remember where it came from. I do remember getting it with no tubes. It does power up. You can hear the power transformer hum a bit when turned on. Cosmetically it looks good. However it does have some damage to the covers. NO TUBES ARE INCLUDED. It has some weight to it. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “marjosadi” and is located in this country: US. This item can be shipped to United States, New Zealand, Fiji, Papua New Guinea, Wallis and Futuna, Gambia, Malaysia, Taiwan, Poland, Oman, Suriname, United Arab Emirates, Kenya, Argentina, Guinea-Bissau, Armenia, Uzbekistan, Bhutan, Senegal, Togo, Ireland, Qatar, Burundi, Netherlands, Slovakia, Slovenia, Equatorial Guinea, Thailand, Aruba, Sweden, Iceland, Macedonia, Belgium, Israel, Kuwait, Liechtenstein, Benin, Algeria, Antigua and Barbuda, Italy, Swaziland, Tanzania, Pakistan, Burkina Faso, Panama, Singapore, Kyrgyzstan, Switzerland, Djibouti, Chile, China, Mali, Botswana, Republic of Croatia, Cambodia, Indonesia, Portugal, Malta, Tajikistan, Vietnam, Cayman Islands, Paraguay, Saint Helena, Cyprus, Seychelles, Rwanda, Bangladesh, Australia, Austria, Sri Lanka, Gabon Republic, Zimbabwe, Bulgaria, Czech Republic, Norway, Côte d’Ivoire (Ivory Coast), Kiribati, Turkmenistan, Grenada, Greece, Haiti, Greenland, Yemen, Afghanistan, Montenegro, Mongolia, Nepal, Bahamas, Bahrain, United Kingdom, Bosnia and Herzegovina, Hungary, Angola, Western Samoa, France, Mozambique, Namibia, Peru, Denmark, Guatemala, Solomon Islands, Vatican City State, Sierra Leone, Nauru, Anguilla, El Salvador, Dominican Republic, Cameroon, Guyana, Azerbaijan Republic, Macau, Georgia, Tonga, San Marino, Eritrea, Saint Kitts-Nevis, Morocco, Saint Vincent and the Grenadines, Mauritania, Belize, Philippines, Democratic Republic of the Congo, Republic of the Congo, Colombia, Spain, Estonia, Bermuda, Montserrat, Zambia, South Korea, Vanuatu, Ecuador, Albania, Ethiopia, Monaco, Niger, Laos, Ghana, Cape Verde Islands, Moldova, Madagascar, Saint Pierre and Miquelon, Lebanon, Liberia, Bolivia, Maldives, Gibraltar, Hong Kong, Central African Republic, Lesotho, Nigeria, Mauritius, Saint Lucia, Jordan, Guinea, Canada, Turks and Caicos Islands, Chad, Andorra, Romania, Costa Rica, India, Mexico, Serbia, Kazakhstan, Saudi Arabia, Japan, Lithuania, Trinidad and Tobago, Malawi, Nicaragua, Finland, Tunisia, Luxembourg, Uganda, Brazil, Turkey, Germany, Egypt, Latvia, Jamaica, South Africa, Brunei Darussalam, Honduras.

• Brand: Knight
• Type: Tube Amplifier
• Custom Bundle: No
• Model: 93-sx312
• MPN: NA
• Featured Refinements: Vintage Tube Amplifier
• Country/Region of Manufacture: United States
• Modified Item: No
• UPC: NA

Up for sale here is this neat vintage Knight integrated tube amplifier, from 1956 and Made in USA. This is a mono amplifier. This is used with moderate to heavy wear and some rust/corrosion, and has an incredible patina. This has no bottom cover or top cover/cage. I believe this normally uses a 5Y3GT rectifier, two 6V6 output tubes, two 6SN7 tubes, and one 6SL7 tube (far left). The three potentiometers in here are 1956 Stackpole 1 meg potentiometers, and are probably audio taper. These are worth a lot by themselves. This has one wire underneath that is not connected, so I did not test this. Also, the AC cord has a bit of damage and should probably be replaced. This should be fully rebuilt in order to work properly. It will be an amazing amp once it’s done. Please see my pictures for details. If you have any questions, please ask. I have more amplifiers and other vintage electronics listed–feel free to take a look! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “peace.love.and.music” and is located in this country: US. This item can be shipped worldwide.

• Brand: Knight
• Type: Tube Amplifier

This Listing is for a Knight Vintage Stereo Integrated Tube Amp Amplifier Radio / Equalizer UNTESTED. This item is untested – working condition is completely unknown. Comes for parts or repair. Please refer to all photos for more details as they are the best part of the description. Knight Vintage Mono Integrated Tube Amp Amplifier Radio / Equalizer. Check out our entire store for more great products and deals! We do however make every possible attempt to accurately describe the inventory we sell and stand behind it. Since 2016, 8TEN Industries has been a leading asset recovery provider supporting national retailers, brands, and manufacturers. Our 60,000 square foot processing and distribution facility located in Cass City, Michigan has allowed us to become industry leader in turning difficult problems for manufacturers into great deals for our customers. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “8ten1944″ and is located in this country: US. This item can be shipped to United States.

• Brand: Knight
• Type: Tube Amplifier
• Country/Region of Manufacture: United States