Amplify your audio experience with the PROTON D1200 Stereo Power Amplifier. This black amplifier boasts two channels and four inputs, including stereo L/R RCA and raw cable speaker jacks, to connect to your favorite devices. It also has two outputs, including RCA and banana speaker jacks, to provide high-quality sound to your home audio system. Enjoy crystal-clear audio with this reliable and durable power amplifier, perfect for any home audio setup. The Proton D1200 model offers superior sound quality and performance, making it an excellent choice for music lovers and audiophiles. Get ready to enhance your audio experience with this top-of-the-line power amplifier. Voted the most powerful 100x2 Amplifier of its time with 6 db headroom this amplifier sounds wonderful . Please research for further info This was recently serviced by Tech RCA inputs were replaced and soldered direct (Upgrade for this product)All the display bulbs were replaced with the highest quality Green bulbs These are truly wonderful Amplifiers that produce very high sound levels in addition to very high quality .

Vintage Proton AD-300 Stereo Cassette Deck Minor side rust in one spot see pics..its also missing on of the knobs in front..see pics..It power up opens and closes,fast forward and reverse works fine,but when you hit play it just advances the tape forward or backwards...Im not sure why its just started doing that but is probably a minor fix.. thanks for your interest!

PROTON D1200 Getestet, sauber und in ausgezeichnetem Betriebszustand!!! Beschreibung : Der Hochstromverstärker Proton D-1200 wurde sorgfältig mit Fokus auf Klangqualität entwickelt. Ein sehr seltener Verstärker, gebaut wie die begehrten Monoblöcke von Dynaco McIntosh, Marantz und anderen, aber verpackt in einem kompakten und leistungsstarken Paket. Ob als Ergänzung zu einem vorhandenen Audio- oder Videosystem oder als Teil eines völlig neuen Systems, Sie werden mit Sicherheit die Klarheit, Detailtreue und Leistungstiefe bemerken, die Proton-Produkte unabhängig vom Preis zu den besten der Welt machen. Der D1200-Leistungsverstärker von Proton verfügt über ein Dynamic Power on Demand (DPD)-Schaltungsdesign, das ihm einen außergewöhnlichen dynamischen Headroom von 7,3 dB bietet. Das DPD-System von Proton ist für einige der höchsten Ausgangsleistungen verantwortlich, die wir je von einem Verstärker gemessen haben. Spezifikationen : Ausgangsleistung: 100 Watt pro Kanal an 8 ? (Stereo), 1800 Watt an 2 ? (Mono) Frequenzgang: 20 Hz bis 20 kHz Gesamte harmonische Verzerrung: 0,02 % Dämpfungsfaktor: 250 Eingangsempfindlichkeit: 1V Signal-Rausch-Verhältnis: 120 dB THD bei Nennleistung 0,02 % Lautsprecherlastimpedanz: 2 ? bis 8 ? Abmessungen: 420 x 122 x 395 mm Gewicht: 15 kg IHF-Standard 20 ms Dauer: 540 W (8 Ohm) 1000 W (4 Ohm) 1500 W (2 Ohm) 100ms Dauer: 450 W (8 Ohm) 650 W (4 Ohm) 800 W (2 Ohm) 200 ms Dauer: 380 W (8 Ohm) 500 W (4 Ohm) 520 W (2 Ohm) Über den Klang... Da ich der landläufigen Meinung, dass gute Endstufen „anders“ klingen, nicht zustimme, kann ich zu diesem Thema nicht viel sagen. Bei diesem Verstärker waren die Auswirkungen der Hochpegeltransienten, die häufig das 6-dB-DPD-Licht zum Leuchten brachten und zu Messwerten über 400 Watt führten, geradezu atemberaubend. Nicht viele „100-Watt“-Verstärker können dieses Leistungsniveau erreichen. Der D1200 ist in Schwarz gehalten und verfügt über zwei große Leistungsmesser. Die logarithmischen Skalen der Messgeräte decken einen Bereich von einigen Milliwatt bis zu vielen hundert Watt (in 8 Ohm) ab, und die Zeiger haben eine schnelle Reaktionszeit, um Programmspitzen zu folgen. Auf der Rückseite des Verstärkers befinden sich isolierte Polklemmen-Lautsprecheranschlüsse, Eingangsbuchsen und ein Stereo/Mono-Schalter. Der D1200 ist 16-1/2 Zoll breit, 14-1/4 Zoll tief und 4-1/4 Zoll hoch und wiegt 35 Pfund. Kenner wissen, wovon ich spreche! Klicken Sie auf den Link unten, um eine vollständige Rezension des Proton D1200 zu erhalten http://www.hifi-classic.net/review/proton-d1200-165.html https://www.makern.de/2009/06/02/proton-d1200 Ich habe mehrere Proton D1200 bei eBay verkauft und alle Käufer sind mit ihrem Kauf zufrieden. *************English ************* Tested, Clean and in Excellent working condition !!! Description : The Proton D-1200 high current amplifier has been carefully developed with complete emphasis on the quality of sound. A very rare amplifier constructed like the sought after Mono blocks of Dynaco McIntosh, Marantz and others but put together in one compact and Powerful package. Whether adding to an existing audio or video system or as part of an all new system, you are certain to notice the clarity, detail and depth of performance which make Proton products among the best in the world, regardless of price. Proton’s D1200 power amplifier features a Dynamic Power on Demand (DPD) circuit design that gives it an extraordinary dynamic-headroom rating of 7.3 dB. Proton’s DPD system is responsible for some of the highest power outputs we have measured from any amplifier. Specifications : Power output: 100 watts per channel into 8? (stereo), 1800 watts into 2? (mono)Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.02% Damping factor: 250 Input sensitivity: 1V Signal to noise ratio: 120dB THD at rated power 0.02% Speaker load impedance: 2? to 8? Dimensions: 420 x 122 x 395mm Weight: 15kg IHF Standard 20ms duration : 540W (8 ohms)1000W (4 ohms)1500W (2 ohms) 100ms duration: 450W (8 ohms)650W (4 ohms)800W (2 ohms) 200ms duration: 380W (8 ohms)500W (4 ohms)520W (2 ohms) About the sound . . . well, since I do not subscribe to the popular notion that good power amplifiers sound “different” from each other, there is not much I can say on that subject. However, with this amplifier, the impact of the high-level transients—which often lit the 6-dB DPD light and produced meter readings of more than 400 watts— was nothing short of stunning. Not too many “100-watt” amplifiers can match that performance. The D1200 is finished in black, with two large power meters. The meters’ logarithmic scales span a range from a few milliwatts to many hundreds of watts (into 8 ohms), and the pointers have a rapid response time to follow program peaks. Insulated binding-post speaker connectors, input jacks, and a stereo/mono switch are in the rear of the amplifier. The D1200 measures 16-1/2 inches wide, 14-1/4 inches deep, and 4-1/4 inches high and weighs16 kg. Connoisseur know what Im talking about! Check the link below for a complete review of Proton D1200 http: //www.hifi-classic.net/review/proton-d1200-165.htmlhttps://www.mackern.de/2009/06/02/proton-d1200 I have sold few Proton D1200 on ebay and all the buyers are happy with the purchase.

Proton AA-1150 Dual-Mono Power Amplifier Actually it powers on, meters and one channel work great, the other channel does work, but has static or noise. In very good condition, minor scuffs or marks. See photos for details. Listed for parts or repair, no returns or refunds. Lower 48 shipping only.

Used very gently excellent condition Comes with original box, cable and manual Experience high-quality sound with the Proton 301 Bi-Amplified Powered Companion 2-Way Speaker for 300 Radio. These bookshelf speakers are made by the renowned brand Proton and provide a 2.0 channel system configuration with a rectangular shape and black color that will easily complement any home audio setup. The speakers are wired and offer a powerful RMS power of 100 W. The model 301 is made in Taiwan and is ideal for use with TVs, videos, and home audio systems. Boost your home audio experience with Proton 301 speakers and enjoy high-quality sound.

Excellent condition overall with little to no wear. Both speakers have been used but look like new. Both power on and work correctly. I have only done a basic test. Include cables, manual and boxes. Speaker dimensions: 11 1/2 L x 8 W Speaker weight: 15 lbs each

Title: Vintage Proton 690 Multichannel Television Sound Decoder (POWER-TESTED)^ Item Attributes Brand: Proton Model: Proton 690 Color: Black Type: Stereo Receiver CONDITION:Used Decoder has been power tested but was not able to complete further testing. In otherwise nice, clean condition. There is some slight cosmetic wear from use but in otherwise great condition! Vintage Proton 690 Multichannel Television Sound Decoder. Decoder has been power tested but was not able to complete further testing. In otherwise nice, clean condition. There is some slight cosmetic wear from use but in otherwise great condition! For more information regarding product information and wear, please refer to photos! Disclaimer *YOU ARE ENCOURAGED TO READ THE FOLLOWING DESCRIPTION BEFORE BIDDING* PRODUCTS DISCLAIMER: Please note that all items listed have been donated. Lots are unsorted, unless otherwise noted. We do our best to ensure the quality of all our auctions. Please remember we are not experts in any field. Items may contain unseen flaws not noted in the description. All items are sold AS IS. If you need further information about an item, please contact us prior to the close of the auction. ELECTRONICS INFORMATION: Items have not been professionally tested or serviced. All items are used and untested (including battery life and functionality), unless otherwise noted. TERMS OF SALE: Orders must be paid for within seven (7) days from the close of auction. All orders not paid within ten (10) days from the close of auction will be relisted for auction without further notice. Displays used to stage product are not included in the purchase. SHIPPING: Items $100 or more will be insured and require a signature. WEIGHT & DIMENSIONS: Weight:6.00 Shipping Weight:11.00 Dimensions:17.00 x 9.00 x 3.00

Proton AA-1150 power amp Black Large illuminated meters Great overall condition 50 watts per channel into 8 ohms Never been opened Amazing amp outstanding clarity, depth, balance

*UPDATE* I realized from viewing my own advert that my pictures weren’t really representative of how bad the case of this amplifier looked. I didn’t want the buyer of this amp to be disappointed by this and so I removed it and gave it a refresh of flat black primer and paint. The last 4 pictures are new and will give you a better idea of what it looks like. I’ve personally owned this amplifier for 30 years. It has been used off and on again in rotation and has always worked flawlessly. The chassis is not perfect but the front glass is clean. I’ve never had to have this repaired. Its sound is astonishing when compared to other amps and receivers from the same era. They have all come and gone and this has stayed with me. I’ve owned so so so many amps, and this wiped the floor with a good many of them. Here’s some extra generic info I pulled from someone else’s advert. A rare, high-quality vintage amplifier! Don’t be fooled by the 50wpc rating. Proton’s Dynamic Power on Demand gives it a claimed 7dB of headroom which, as Julian Hirsch said in his June 1988 review, makes it, “quite possibly the world’s most powerful “50W amplifier””. It’s a dual mono design and offers exemplary performance and musicality. Notably, Julian Hirsch found that it exceeded almost all of its published specs (shown below). Manufacturer’s published specifications: Rated power output: (20hz-20khz into 8ohms) 50w per channel Dynamic power: (at 8ohm/4ohm/2ohm) 280w/450w/600w IHF standard 20ms duration 100ms duration 220w/300w/350w Dynamic Headroom: (at 8ohm/4ohm/2ohm) 7db THD at rated power 0.02% Dimensions: 16.5” W x 14.5” D x 4.25” H Weight 25 lbs

Beautiful condition proton aa1150 power amplifier.50 watts per channel in to 8 ohm,100 into 4 ohm.2 ohm stable with 800 watts peak power.the amp works as it should and looks good doing it.extra large vu meters.amp has very little marks or scratches.come with a printed manual.will be double boxed.

Beautiful condition proton aa1150 power amplifier.50 watts per channel in to 8 ohm,100 into 4 ohm.2 ohm stable with 800 watts peak power.the amp works as it should and looks good doing it.extra large vu meters.amp has very little marks or scratches.come with a printed manual.will be double boxed.

Proton D1200 power amplifier Nice condition, Better Than New Inside If you want to save a bundle on this amp contact me using the blue letters on the last picture THE AUDIO PRIZE AWAITS YOU Here is another fine offering from the audio labs of Morris Electronic Repair Boutique This proton D1200 is extremely rare. At 100 Watts / 8 and the ability at music passages to deliver up to 1,600 Watts of audio power for short duration makes this amp perform super well with most speakers. It sports a dual mono power supplies and a single power supply that runs the 100 watts out. At large music passages. the high current & voltage mono power supplies kick in. BUT WAIT THERES MORE This unit has been completely recapped, excluding the rail caps, which checked better than new. The bias setting have been set to factory specs. The VU meters lamps have been replaced with LEDs so they will last a lifetime. Also new speaker binding post have been install that are super rugged. and a IEC power connector, and will come with a generic IEC power cord. Also new Tiffany RCA input jacks have been installed. This unit have undergone hours of testing and burn in under load, driven by a Harman Kardon CD 491 player into a Harmon Kardon 825 preamp into Paradigm B/P Espirit 300 w Towers. Please Note: I only ship in the US. No international shipping! As always I pack everything with the best of materials, so as to thwart the gorilla UPS handlers. It will arrive alive and unscathed. This amp is very heavy and there is a small additional charge reflected in shipping cost for I pay a lot for proper packing materials. But you will appreciate the effort when they arrive undamaged. The service manual & owner manual will be included (reproduced from original) along with amplifier spec sheets on each amp after testing. And will carry a one year iron clad warranty against all parts & labor and I will pay the shipping both ways in the unlikely event an issue should occur. Thank you, for reading all the verbiage, Any issues you should have I take care of them, Pronto, Period! No Ifs, Ands or Buts. This is why I maintain a 100% positive feedback. I answer all submitted questions.

Title: Vintage Proton 600T Video Tuner (POWER-TESTED)^ Item Attributes Brand: Proton Model: 600T Color: Black Type: Video Tuner UPC: n/a CONDITION:Used There are a couple small dents on the top and some minor scratches. This item has been power tested and worked. Vintage Proton 600T video tuner. There are a couple small dents on the top and some minor scratches. This item has been power tested and worked. Disclaimer *YOU ARE ENCOURAGED TO READ THE FOLLOWING DESCRIPTION BEFORE BIDDING* PRODUCTS DISCLAIMER: Please note that all items listed have been donated. Lots are unsorted, unless otherwise noted. We do our best to ensure the quality of all our auctions. Please remember we are not experts in any field. Items may contain unseen flaws not noted in the description. All items are sold AS IS. If you need further information about an item, please contact us prior to the close of the auction. ELECTRONICS INFORMATION: Items have not been professionally tested or serviced. All items are used and untested (including battery life and functionality), unless otherwise noted. TERMS OF SALE: Orders must be paid for within seven (7) days from the close of auction. All orders not paid within ten (10) days from the close of auction will be relisted for auction without further notice. Displays used to stage product are not included in the purchase. SHIPPING: Items $100 or more will be insured and require a signature. WEIGHT & DIMENSIONS: Weight:11.00 Shipping Weight:11.00 Dimensions:18.00 x 12.00 x 5.00