Power supply repaired. Resoldered connections where needed. Adjusted Bias. Cleaned and tested unit. 40 watts per channel.

Proton Vintage Audio AA-1150 Power Amplifier Used, Goos Working Condition. Fair cosmetic condition with scratches. I25-3 VVV6

I’ve had these for years they all power up one has updated capacitors in it. You are bidding on for the D1200’s Local pick up only! Thanks for looking. I am in the surroundings of the Chicagoland area.

In very good condition proton AA 1150 professionally recapped new blue LEDs new protection circuit relays which solves the common problem of at very low listening levels intermittent signal loss the Yamaha below the unit was used for testing and not included in this auction only the proton AA 1150 is for sale in this auction thank you and have a great day

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You are purchasing a Proton D540 Stereo Amplifier. Unit is being sold as is for parts or repair only. NO RETURNS WILL BE ACCEPTED. UNit does not have any output.Please feel free to contact us with any questions or concerns. Shipping Details: All US shipments to the Lower 48 States are free for this item and includes a tracking number. All items are shipped within 1-2 business days.International shipping is processed through the Global Shipping Program ONLY. Please contact me if you need any more information. I am NOT responsible for ANY customs fees or taxes. Returns: We will accept any item back for a return within 30 days as long as the item is returned in the same condition it arrived in with all included items. Payment: Payment is due within 48 hours of purchase.

UP FOR SALE WORKING Proton D540 Stereo Amplifier Tested and Working with issue Read Description, SEE ALL PICTURES FOR MORE DETAILS AND CONDITION OF THIS ITEM, ( SEE PIC 6TH ) THIS ITEM IS TESTED AND WORKING.===== THERE IS NEW UPDATE ON THIS ITEM===== THIS ITEM IS BEING SOLD AS-IS NO RETURNS OR REFUNDS ACCEPTED THIS IS A FINAL SALE. IF YOU DO NOT AGREE WITH THE TERMS AND CONDITION OF THIS ITEM PLEASE DO NOT PURCHASE OR MAKE AN OFFER ON IT. THE ISSUES IS THAT THE ADAPTER TO BRIDGE PRE-OUT IS MISSING. 1 - 9 - 2025 NEW UPDATE ON THIS UNIT I DID PLUGG IT IN TO A NAD POWER AMPLIFIER, I USED THE PRE-OUT FROM THE PROTON TO THE AMP, THEN I PLAYED MUSIC FOR SEVERAL HOURS AND IT DOES WORK and SOUND GOOD. I DID TEST THIS UNIT WITH RCA CABLE AND THAT’S HOW I GOT SOUND ON THE SPEAKER BUT IF REMOVED THE RCA CABLE THE SOUND CUTS OFF, I DO NOT KNOW IF USING THE RCA CABLE IS A GOOD IDEA. I DID TEST THE INPUTS. PHONO - TUNER - DAD - VIDEO - TAPE 1 - TAPE 2 - AND THEY ARE ALL WORKING BUT I DID NOT TEST THE REC OUT. ALSO BOTH SPEAKER OUTPUT ( A / B ) ARE WORKING AND SOUND GOOD. ONCE AGAIN THE PHONO INPUT IS TESTED AND WORKING. THIS ITEM HAS SCRATCHES, SCRAPES, SCUFFS, DENTS, NICKS, DINGS, MARKS ALL AROUND AS PICTURED. THE CONDITION THAT IS PICTURED AND DESCRIBED IS EXACTLY WHAT YOU WILL RECEIVE. SELLING UNIT ONLY. SPEAKERS, TURNTABLE and NAD AMPLIFIER ARE NOT INCLUDED. THANK YOU VERY MUCH FOR LOOKING AT THIS ITEM.

Proton AI-3000 II Audio System CD Cassette Tuner Integrated 3000 Watt Amplifier with Remote. Very good working condition

INCLUDES AMPLIFIER WITH POWER CORD. UNTESTED DOES POWER ON. LAST OWNER SAID THAT ONE OF THE PRE OUTS OR MIGHT OF BEEN ONE SIDE ON THE INPUTS/OUTPUT WAS NOT WORKING. THAT WAS THE ONLY ISSUED. SO SELLING AS IS FOR PARTS. NO RETURNS SEE ALL PICTURES THANKS LOOK AT MY OTHER AUCTIONS FOR COOL THINGS FROM A SMOKE AND PET FREE HOME

Was working a few years ago 1 channel was anyways. This is one of the most powerful amps I have EVER seen! I believe its the Taiwanese version of the Carver Magnetic Field Amp! Its a dual rail design. If someone can repair it for a fair price message me. If not if just like to sell it. Trying to get rid of all of my hifi. Thx for looking! Wade

The power amplifier seems to be in great condition. Ill front lights light up. It is untested but it did not hear any bad sounds coming from it when I plugged it in. Not knowing enough about the item I do not know what would happen if I plug speakers up to it. Im lowering it sell price just because I didnt know if it works or not. I mean it plugs up just fine but Im not sure of functionality. There was also no electrical smell whwn plugged in.

Tested used vintage proton A1150 stereo amplifier Left and right channels function as they should Left and right meters function Lamps work Cosmetically still in solid shape for the age some scratches due to moving around No heavy scratches or damages Please check all pictures provided Will be packaged in a double wall box and styrofoam all around

The power amplifier seems to be in great condition. Ill front lights light up. It is untested but it did not hear any bad sounds coming from it when I plugged it in. Not knowing enough about the item I do not know what would happen if I plug speakers up to it. Im lowering it sell price just because I didnt know if it works or not. I mean it plugs up just fine but Im not sure of functionality. There was also no electrical smell whwn plugged in.

Good working amplifier

Tested used vintage proton A1150 stereo amplifier Left and right channels function as they should Left and right meters function All new LED lamps All new output relays Idle current adjusted Cosmetically still in great shape other than scratch on top of unit as pictured! Please check all pictures provided

VTG Proton Audio AA-1150 Power Amplifier AMP. It works great. Thanks and good luck.

Excellent set. Preamp Tuner and power amplifier. Picture with two power amps is just to show the lights on the one that is included. Includes: Tuner 440 AP-1000 preamplifier AA-1150 power amplifier All works very well. Excellent cosmetics. Sounds great! I try my best to describe my items as truthfully and accurately as possible. Many of these items are collectibles oriented towards various hobbies of mine. Meaning that I care and appreciate the things I sell. If I do not know about certain specifics of any item I will acknowledge it. Please use photos to judge the items condition. If you have any questions please ask! I try to get to the post office about three times per week. If for any reason I take longer than 3 business days to ship your item I will let you know ASAP. If you need immediate shipping day of or the next day / special instructions please include a message and I will do my best to accommodate. I ship to the lower 48 states as well as through eBay's global shipping program.

Powers on. Tested and working with tapedeck and speakers. Has only a few scratches on one side. Rated Power Output: 200W / 450W / 600W (20Hz-20kHz, 8 Ohms) Dynamic Power: 280W / 300W / 350W (IHF, 8 Ohms) Total Harmonic Distortion (T.H.D.): <0.015% Frequency Response: 20Hz-20kHz, 0.3dB Input Sensitivity: 1V Signal-to-Noise Ratio (S/N): >112dB (A-Weighted) Dimensions (HxWxD): 16.53 x 4.8 x 15.6 (420 x 122 x 395 mm) Net Weight: 11.5 kg (25.3 lbs) Shipping Weight: 13.9 kg (30.58 lbs)

INCLUDES AMPLIFIER WITH POWER CORD. UNTESTED DOES POWER ON. LAST OWNER SAID THAT ONE OF THE PRE OUTS OR MIGHT OF BEEN ONE SIDE ON THE INPUTS/OUTPUT WAS NOT WORKING. THAT WAS THE ONLY ISSUED. SO SELLING AS IS FOR PARTS. NO RETURNS SEE ALL PICTURES THANKS LOOK AT MY OTHER AUCTIONS FOR COOL THINGS FROM A SMOKE AND PET FREE HOME

Tested used vintage proton A1150 stereo amplifier Left and right channels function as they should Left and right meters function All new LED lamps All new output relays Idle current adjusted Cosmetically still in great shape other than scratch on top of unit as pictured! Please check all pictures provided

I am offering a Proton AA-2080 Dual-Mono Power Amplifier. The Unit is in excellent physical condition. I see NO scratches or fingerprints. The Unit looks NEW. The only testing I did was to power the Unit up. I guarantee what I sell. The Units dimensions are 16 x 15 x 5. If postage is needed, the Buyer pays the postage. This Unit is heavy (21 -22 lbs.). If needed, I will purchase a box, at MY expense, from my local pack-and-ship store. When sent, the Unit will be wrapped in multiple layers of bubble wrap. ANY excess postage paid, will be refunded. LOCAL Denver, Colorado pick-up is available at Southwest Plaza, Littleton, CO. I welcome your inquiries

Very good working condition. Original VU meter lamps work fine and look great lit up in the dark. The housing in very nice, clean shape with only a couple very small scuffs/chips. The front looks great with no scratches or smudges. Overall a really clean unit that I used myself for a while and am pretty bummed to sell. One previous owner before me. This is a very heavy unit weighing in a little over 33 lbs. Dimensions are 16.5 inches x 4.3 inches x 14.3 inches. Ships in a very well padded box with signature confirmation (someone will need to sign for the package). Specifications: Power output: 100 watts per channel into 8? (stereo), 1800 watts into 8? (mono)Frequency response: 20Hz to 20kHzTotal harmonic distortion: 0.02%Damping factor: 250Input sensitivity: 1VSignal to noise ratio: 120dB

Tested used vintage proton A1150 stereo amplifier Left and right channels function as they should Left and right meters function All new LED lamps All new output relays Idle current adjusted Cosmetically still in great shape other than scratch on top of unit as pictured! Please check all pictures provided