Proton D540 Integrated Amplifier sold Untested as Parts or Repair. Pretty Good Cosmetics with all knobs intact and several minor age related scuffs and nicks. All LEDs work, power cord is solid no frays, nicks or paint. Left hinge on the front cover door is broken but stays shut. No back story here, just picked the unit up from an estate sale last Fall. Please include $32.00 to cover Fast and Secure Shipping anywhere within the Continental US 48s Only. I ship Fast 5 days a week (M-F). Sold As Shown As Parts or Repair with No Returns. Thanks for viewing and Good Luck,

Der Amplifier ist aus Nachlasser ist in einem gebrauchten Zustandfunktioniert altersbedingte Gebrauchsspuren sind vorhanden es wird alles versendet was auf den Bilder zusehen ist. Privatverkauf keine Rücknahmeweitere Details siehe Bilder

This listing is for one amplifier. Onix Dual Mono Power Amplifier A-2150 is a repackaged Proton AA-2120 amplifier. Proton VU Meter amplifiers are becoming more rare, and the AA-2120 is much more difficult to come by compared to the more common D1200 or the smaller AA-1150 at 50 watts per channel. Even that smaller amp has a reputation for being powerful, so you can imagine how much more powerful these larger amp are. Proton AA-2120 power amps were manufactured from 1993 for a few years and had a power rating of 120 watts per channel into 8 ohms. These are true dual mono amps that only share the power button, chassis and the power cord, so they are heavy for their size at 36lbs. Even more rare is the repackaged Onix A-2150. Other than the logos, they appear to be identical inside and out to the Proton AA-2120. They were manufactured in the late 1990s and had a bump to the power rating to 150 watts per channel. These amps are indeed very powerful and can easily shake your room. But they also sound very clear, especially in the midrange. As you can see in one of the photos and the video, Ive paired the Onix A-2150 with a pair of small bookshelf speakers (NHT Super Zeros). Ive been using it as my main amp for everyday use for watching Youtube or Netflix, because it just sounds so clear and concentrated. As for the condition, it works fine without any issues. Both VU meters work well. Appearance is very clean and well cared for. I replaced the feet to aftermarket metal ones as the rubber parts on original ones were disintegrating. I can include those if youd like. As you can see in the photo, I have two of these. I have in the past used them to bi-amp my floorstanding 3-way speakers. These are great looking amps to start with, but with two of them stacked, they really look beautiful. But honestly, these two combined are too powerful for me and my room. So, Im selling one. Of the two, the one Im selling is the one on top with the more green lamps (original bulbs). The other one had the bulbs burn out so I replaced the bulbs with LEDs and its much brighter. You may want to consider LED replacements in the future.

Selling my very nice Proton AA-1150 dual mono power amplifier Great sound quality and build quality Green meters and glass front are stunning(see pics) Underrated at 50 watts per channel with heavy duty power supply labeled power on demand series Bursts up to 150 watts per channel for musical peaks. Tons of headroom and clarity. Ultra high dampening factor Nicest on ebay Heavy duty binding posts on rear panel accept bare speaker wire or banana plugs. Very versatile Will be prof packed and shipped. Please email with any questions. Thanks.

This listing is for one amplifier. Its the 2nd of the two of these amps I had. The other one was sold. This one had the LED lamp replacement. Otherwise, it was identical to the other one, having been manufactured on the same day. In the video, its the one on top, with the brighter more blue VU meters. Onix Dual Mono Power Amplifier A-2150 is a repackaged Proton AA-2120 amplifier. Proton VU Meter amplifiers are becoming more rare, and the AA-2120 is much more difficult to come by compared to the more common D1200 or the smaller AA-1150 at 50 watts per channel. Even that smaller amp has a reputation for being powerful, so you can imagine how much more powerful these larger amp are. Proton AA-2120 power amps were manufactured from 1993 for a few years and had a power rating of 120 watts per channel into 8 ohms. These are true dual mono amps that only share the power button, chassis and the power cord, so they are heavy for their size at 36lbs. Even more rare is the repackaged Onix A-2150. Other than the logos, they appear to be identical inside and out to the Proton AA-2120. They were manufactured in the late 1990s and had a bump to the power rating to 150 watts per channel. These amps are indeed very powerful and can easily shake your room. But they also sound very clear, especially in the midrange. As you can see in one of the photos, Ive paired the Onix A-2150 with a pair of small bookshelf speakers (NHT Super Zeros). Ive been using it as my main amp for everyday use for watching Youtube or Netflix, because it just sounds so clear and concentrated. As for the condition, it works fine without any issues. Both VU meters work well. Appearance is very clean and well cared for. I replaced the feet to aftermarket metal ones as the rubber parts on original ones were disintegrating. I can include those if youd like. I have in the past used them to bi-amp my floorstanding 3-way speakers. But I really didnt need two of these for any of my speakers, but they just looked so beautiful and impressive together. Anyway, I hope you would consider this beautiful and super rare amp. Edit: Heres a link to a review of Proton aa-2120 -- 440 watts per channel into 2 ohm load at clipping point! https://www.hifi-classic.net/review/proton-aa-2120-56.html

Up for sale is a rare Proton AA-1150 Dual-Mono Amplifier, designed for audiophiles seeking exceptional sound quality. This high-end amplifier is perfect for music lovers who demand the best out of their audio systems. I have two available!! Equal condition. Upgraded led meter lights. All new speaker relays. Great condition. Huge dynamic power. This will be properly boxed correctly for shipping. Specs in photos As with all vintage equipment these are sold as is. They are in perfect working order but they are vintage.

I have a rare and gorgeous Proton AA-1150 available for sale. The unit is in near mint condition. Proton AA-1150 is a Dual mono power amplifier. Dual Mono Power equals Stereo. Constructed like the sought after Monoblocks of Marantz, Dynaco and others but put together in one compact and Powerful package. Rated at 50 watts (see video) per channel into 8 ohm but which makes 400 watts/channel on musical peaks with DPD or dynamic power on demand. Large green power meters are calibrated from 0-400 watts. YouTube: https://youtu.be/0pXYKnhJtGk?si=KDcIomykToyjnDWs *** CASH & CARRY in newton ma or Portsmouth RI *** #### Please Read #### Due to the age of this device, this equipment is being sold AS IS with no returns or adjustments. This is NOT a new component. As such, it does not come with any guarantee-- implied or written. Vintage audio equipment is sensitive and does not travel particularly well. So in rare instances, that which was working 100% at my place may require adjustment or servicing before working equally well at yours. Most on-line sales of vintage electronics happen under these conditions - but I just wanted to point this out so there are no misunderstandings or disappointments. Please examine the pictures and video carefully. They are part of the description. Will be packed securely to ensure safe shipping. #### Sansui Marantz Luxman Sony Sanyo Kenwood nad pioneer Yamaha Nikko technics

Welcome to WILLOWS ALL-SORTS , please feel free to visit my shop i have a range of shop catergories and i am happy to combine postage for multiple buys ,,TRACKING PROVIDED ON EVERYTHING POSTED ,,,, new stock listed weekly ,, ALL RECORDS POSTED IN THICK CARDBOARD PROTECTIVE MAILERFREE POSTAGE ON MOST ITEMS AND FREE RETURNS WITHIN 31 DAYSI am happy to answer any questions --------Thankyou For Your Interest ---------

UPGRADED LED meters. Has static with sound. Sound comes and goes. Case and glass are in great condition. For parts not working properly Will be packed correctly and securely

amazing condition. New led lights. Upgraded rca jacks to chassis mounts ( a known issue with these). New speaker relay ( also known failure area). If you’re reading this you probably know what this is. One of the most dynamically powerful ampliers ever. 2ohm stable. Specs in photos I’ve added the amp dyno specs in last picture. This will be carefully packed for shipping

Proton AA-1150 Amplifier. Used sparingly. Can drive almost anything with peak power of 400wpc @8ohms. Check it lab measurements on last page. 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 channelDynamic power: (at 8ohm/4ohm/2ohm) 280w/450w/600wIHF standard 20ms duration100ms duration 220w/300w/350wDynamic Headroom: (at 8ohm/4ohm/2ohm) 7dbTHD at rated power 0.02%Dimensions: 16.5” W x 14.5” D x 4.25” HWeight 25 lbs

PROTON D1200 Stereo Power Amplifier

This is a reprint of an Audio Review from 1988! This review will have SPECS, COMMENTARY, DETAILS, and INFORMATION about the unit listed. . You wont be dissapointed! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This is a rare, vintage amplifier from Proton, with an advanced Dual-Mono design. It is in extremely nice condition, and has had the green illumination replaced after the bulbs finally went out. These have been replaced with a wonderful blue for a slightly updated look. The amplifier has an amazing 7db of dynamic headroom, which allows it to put out considerably more power for musical peaks, and the oversized power supply is able to cope with lower-impedance loads and double the rated power before dipping into that amazing headroom. Truly a fantastic amp, with construction not often seen these days! From a smoke-free home.

Proton AI-3000 Parts / Repair Integrated Amplifier Featured in the film Robocop CD laser works - but door does not open One audio channel seems to be out Tape not working. Front panel door intact and working well Unit in good cosmetic condition

Proton D540 Dynamic Power on Demand Integrated Amp. In fantastic condition and lightly used. Works fine. https://therobbcollections.blogspot.com/2017/07/details-on-remarkable-proton-d540.html?m=1

Toller Proton AM 10 AM-10 Verstärker HiFi Stereo Amplifier Guter Zustand Läuft Beim drehen der Lautstärke rauscht / knackst es ein wenig Siehe Fotos

Used, working condition. Shows cosmetic signs of usage, scratches, but works fine. See pictures with description of features.

Super-solid dual-mono Proton AA-2120. Good clean power, smooth sound. Looks nice too. Been serviced recently. Everything is good, power button, lights etc. Ready to connect! 120wpc

This is a rare, vintage amplifier from Proton, with an advanced Dual-Mono design. It is in extremely nice condition, and has had the green illumination replaced after the bulbs finally went out. These have been replaced with a wonderful blue for a slightly updated look. The amplifier has an amazing 7db of dynamic headroom, which allows it to put out considerably more power for musical peaks, and the oversized power supply is able to cope with lower-impedance loads and double the rated power before dipping into that amazing headroom. Truly a fantastic amp, with construction not often seen these days! From a smoke-free home.

This is a rare, vintage amplifier from Proton, with an advanced Dual-Mono design. It is in extremely nice condition, and has had the green illumination replaced after the bulbs finally went out. These have been replaced with a wonderful blue for a slightly updated look. The amplifier has an amazing 7db of dynamic headroom, which allows it to put out considerably more power for musical peaks, and the oversized power supply is able to cope with lower-impedance loads and double the rated power before dipping into that amazing headroom. Truly a fantastic amp, with construction not often seen these days! From a smoke-free home.

This Proton AA-1150 power amplifier is perfect for serious audiophiles and home theater enthusiasts. With its sleek design and top-of-the-line features, this amplifier delivers clear, powerful sound that will blow you away. The Proton AA-1150 is a top-of-the-line amplifier that is ideal for use in homes, offices, and other settings where high-quality audio is essential. Whether you're looking to upgrade your current system or simply looking for an affordable, high-quality amplifier, the Proton AA-1150 is the perfect choice. With its reliable performance, exceptional sound quality, and top-notch features, this amplifier is sure to impress even the most discerning audiophile. So why wait? Order your Proton AA-1150 power amplifier today and experience the ultimate in audio quality!

This is a rare, vintage amplifier from Proton, with an advanced Dual-Mono design. It is in extremely nice condition, and has had the green illumination replaced after the bulbs finally went out. These have been replaced with a wonderful blue for a slightly updated look. The amplifier has an amazing 7db of dynamic headroom, which allows it to put out considerably more power for musical peaks, and the oversized power supply is able to cope with lower-impedance loads and double the rated power before dipping into that amazing headroom. Truly a fantastic amp, with construction not often seen these days! From a smoke-free home.