YAMAHA M-80 POWER AMPLIFIERYou are bidding on YAMAHA M-80 POWER AMPLIFIER. Its in great working condition and sounds amazing. Both channels working and sound amazing. Looks great, but please remember this is used item and does have signs of being used. All lights working and all original. All connections working great. Power light is out, please look at the pictures. Missing box and manual. Please look at the pictures before bidding, you will get what you see in the pictures. POLICY: SELLING AS IS, NO RETURNWe ask all buyers to email us before opening a EBAY CLAIM CASEI WILL NOT ACCEPT THE ITEM BACK, IF YOU CHANGE YOUR MIND OR DO NOT LIKE THE ITEM OR DID NOT READ THE DESCRIPTION AND LOOKED AT THE PICTURES.We ask all the buyers before leaving a negative or neutral, please email us with a problem first and we will do our best to make you happy again.We care about our buyers and we only want to see them happy.WE WANT TO SEE ALL OUR BUYERS HAPPY PAYMENT: Payment must be received in 2 days, if you do not pay with in 2 days, EBAY claim will be open. LOCAL FLORIDA PICK UP ALWAYS WELCOME BY APPOINTMENT ONLY & CASH ONLY Notify us BEFORE making payment & we will send you a revised invoice without shipping charges. Allow 24hrs notice before coming by to pick up your item Available days for Pickup: M-F 12 NOON-2:30PM We are located in the CORAL SPRINGS/COCONUT CREEK/MARGATE AREA.ALL PICK UP WILL BE DONE IN PUBLIC PLACE. ALL FLORIDA BUYER: ALL FL STATE BUYERS MUST PAY 7% SALES TAX, THIS IS A LAW, IF BUYER REFUSE TO PAY SALES TAX, THAN TRANSACTION WILL BE CANCEL AND BUYER WILL BE REPORTED TO EBAY. SHIPPING: Boxing and shipping via FedEx ground to addresses in the USA continental ONLY and shipping rate is rated to all 48 state, please do not ask for the lower shipping rate. Shipping is $100 (NONE REFUNDABLE ) FEDEX DO NOT DELIVER TO PO.BOX, MUST HAVE A VALID ADDRESS.ALASKA, HAWAII & PR BUYERS must ask for the shipping rate before bidding. ATTENTION: INTERNATIONAL BIDDERSALL INTERNATIONAL BUYERS MUST USE EBAY GLOBAL SHIPPING PROGRAM, I HAVE NOTHING TO DO WITH EBAY GLOBAL SHIPPING RATE, THIS BETWEEN BUYER AND EBAY, IF YOU DO NOT LIKE THE EBAY GLOBAL SHIPPING COST THAN PLEASE DO NOT BUY THE ITEM.

YOU ARE BIDDING ON A USED YAMAHA M-85 STEREO POWER AMPLIFIER,WORKING GOOD HAS SOME SCRATCHES,PLEASE CHECK THE PICTURES BEFORE BIDDING,SHIPPING 48 STATES ONLY.

Yamaha M-80 in fair physical condition, functionally fully working. This been fully tested, bias is set. Class-A bias confirmed. This is a later model that has all the Yamaha mods (Technical Bulletin 66H) that made the unit more reliable. With the Yamaha updates, this essentially is identical to the M-85. The dreaded corrosive glue issue with these units has been addressed and mitigated. I replaced Diodes/ capacitors/ resistors to mitigate the corrosive glue issue with these amplifiers. These M-80s sound amazing, and is now fully functional. The output stages and main capacitors are all good and stock, as are the drivers. I tested full power into 4 ohms and prior to clipping gave me more than 547 watts into 4 ohms (both channels driven). At 8 ohms, it pumps out 287 watts before clipping. UPGRADED speaker posts on this unit. The are 5 way Banana binding posts. The OEM could only accept bare wire. You can now use Banana jacks, spades, inserts and bare wire. Sounds amazing, soft, delicate, detailed. Please see all photos and ask questions if in doubt!

FONO FORUM - Dezember 1984 Heftumschlag mit Gebrauchsspuren (berieben), Innenteil sehr gut erhalten Dies ist ein privater Verkauf unter Ausschluß der Gewährleistungsansprüche.

YAMAHA M-80 POWER AMPLIFIERYou are bidding on YAMAHA M-80 POWER AMPLIFIER. Its in great working condition and sounds amazing. Both channels working and sound amazing. Looks great, but please remember this is used item and does have signs of being used. All lights working and all original. All connections working great. Power light is out, please look at the pictures. Missing box and manual. Please look at the pictures before bidding, you will get what you see in the pictures. POLICY: SELLING AS IS, NO RETURNWe ask all buyers to email us before opening a EBAY CLAIM CASEI WILL NOT ACCEPT THE ITEM BACK, IF YOU CHANGE YOUR MIND OR DO NOT LIKE THE ITEM OR DID NOT READ THE DESCRIPTION AND LOOKED AT THE PICTURES.We ask all the buyers before leaving a negative or neutral, please email us with a problem first and we will do our best to make you happy again.We care about our buyers and we only want to see them happy.WE WANT TO SEE ALL OUR BUYERS HAPPY PAYMENT: Payment must be received in 2 days, if you do not pay with in 2 days, EBAY claim will be open. LOCAL FLORIDA PICK UP ALWAYS WELCOME BY APPOINTMENT ONLY & CASH ONLY Notify us BEFORE making payment & we will send you a revised invoice without shipping charges. Allow 24hrs notice before coming by to pick up your item Available days for Pickup: M-F 12 NOON-2:30PM We are located in the CORAL SPRINGS/COCONUT CREEK/MARGATE AREA.ALL PICK UP WILL BE DONE IN PUBLIC PLACE. ALL FLORIDA BUYER: ALL FL STATE BUYERS MUST PAY 7% SALES TAX, THIS IS A LAW, IF BUYER REFUSE TO PAY SALES TAX, THAN TRANSACTION WILL BE CANCEL AND BUYER WILL BE REPORTED TO EBAY. SHIPPING: Boxing and shipping via FedEx ground to addresses in the USA continental ONLY and shipping rate is rated to all 48 state, please do not ask for the lower shipping rate. Shipping is $100 (NONE REFUNDABLE ) FEDEX DO NOT DELIVER TO PO.BOX, MUST HAVE A VALID ADDRESS.ALASKA, HAWAII & PR BUYERS must ask for the shipping rate before bidding. ATTENTION: INTERNATIONAL BIDDERSALL INTERNATIONAL BUYERS MUST USE EBAY GLOBAL SHIPPING PROGRAM, I HAVE NOTHING TO DO WITH EBAY GLOBAL SHIPPING RATE, THIS BETWEEN BUYER AND EBAY, IF YOU DO NOT LIKE THE EBAY GLOBAL SHIPPING COST THAN PLEASE DO NOT BUY THE ITEM.

Amplifier is in very good condition. Sounds very good. Theres only one small issue with it - Class A button stock in ON position. Other than that its perfect.

Amplifier works perfectly. One corner was slightly bent during previous shipping (please check photos). Sounds very good! Will be very securely packed for safe shipping.

YAMAHA M-80 POWER AMPLIFIERYou are bidding on YAMAHA M-80 POWER AMPLIFIER. Its in great working condition and sounds amazing. Both channels working and sound amazing. Looks great, but please remember this is used item and does have signs of being used. All lights working and all original. All connections working great. Power light is out, please look at the pictures. Missing box and manual. Please look at the pictures before bidding, you will get what you see in the pictures. POLICY: SELLING AS IS, NO RETURNWe ask all buyers to email us before opening a EBAY CLAIM CASEI WILL NOT ACCEPT THE ITEM BACK, IF YOU CHANGE YOUR MIND OR DO NOT LIKE THE ITEM OR DID NOT READ THE DESCRIPTION AND LOOKED AT THE PICTURES.We ask all the buyers before leaving a negative or neutral, please email us with a problem first and we will do our best to make you happy again.We care about our buyers and we only want to see them happy.WE WANT TO SEE ALL OUR BUYERS HAPPY PAYMENT: Payment must be received in 2 days, if you do not pay with in 2 days, EBAY claim will be open. LOCAL FLORIDA PICK UP ALWAYS WELCOME BY APPOINTMENT ONLY & CASH ONLY Notify us BEFORE making payment & we will send you a revised invoice without shipping charges. Allow 24hrs notice before coming by to pick up your item Available days for Pickup: M-F 12 NOON-2:30PM We are located in the CORAL SPRINGS/COCONUT CREEK/MARGATE AREA.ALL PICK UP WILL BE DONE IN PUBLIC PLACE. ALL FLORIDA BUYER: ALL FL STATE BUYERS MUST PAY 7% SALES TAX, THIS IS A LAW, IF BUYER REFUSE TO PAY SALES TAX, THAN TRANSACTION WILL BE CANCEL AND BUYER WILL BE REPORTED TO EBAY. SHIPPING: Boxing and shipping via FedEx ground to addresses in the USA continental ONLY and shipping rate is rated to all 48 state, please do not ask for the lower shipping rate. Shipping is $100 (NONE REFUNDABLE ) FEDEX DO NOT DELIVER TO PO.BOX, MUST HAVE A VALID ADDRESS.ALASKA, HAWAII & PR BUYERS must ask for the shipping rate before bidding. ATTENTION: INTERNATIONAL BIDDERSALL INTERNATIONAL BUYERS MUST USE EBAY GLOBAL SHIPPING PROGRAM, I HAVE NOTHING TO DO WITH EBAY GLOBAL SHIPPING RATE, THIS BETWEEN BUYER AND EBAY, IF YOU DO NOT LIKE THE EBAY GLOBAL SHIPPING COST THAN PLEASE DO NOT BUY THE ITEM.

This auction is for a Yamaha Natural Sound Power Amplifier M-80 (06312). The amp powers on, but I cannot get sound. The lights work for each input. There may be more issues beyond this. There are some scratches on the cabinet. This is a one owner system. Please look at the pictures. Shipping is listed above.

YAMAHA M-80 POWER AMPLIFIERYou are bidding on YAMAHA M-80 POWER AMPLIFIER. Its in great working condition and sounds amazing. Both channels working and sound amazing. Looks great, but please remember this is used item and does have signs of being used. All lights working and all original. All connections working great. Power light is out, please look at the pictures. Missing box and manual. Please look at the pictures before bidding, you will get what you see in the pictures. POLICY: SELLING AS IS, NO RETURNWe ask all buyers to email us before opening a EBAY CLAIM CASEI WILL NOT ACCEPT THE ITEM BACK, IF YOU CHANGE YOUR MIND OR DO NOT LIKE THE ITEM OR DID NOT READ THE DESCRIPTION AND LOOKED AT THE PICTURES.We ask all the buyers before leaving a negative or neutral, please email us with a problem first and we will do our best to make you happy again.We care about our buyers and we only want to see them happy.WE WANT TO SEE ALL OUR BUYERS HAPPY PAYMENT: Payment must be received in 2 days, if you do not pay with in 2 days, EBAY claim will be open. LOCAL FLORIDA PICK UP ALWAYS WELCOME BY APPOINTMENT ONLY & CASH ONLY Notify us BEFORE making payment & we will send you a revised invoice without shipping charges. Allow 24hrs notice before coming by to pick up your item Available days for Pickup: M-F 12 NOON-2:30PM We are located in the CORAL SPRINGS/COCONUT CREEK/MARGATE AREA.ALL PICK UP WILL BE DONE IN PUBLIC PLACE. ALL FLORIDA BUYER: ALL FL STATE BUYERS MUST PAY 7% SALES TAX, THIS IS A LAW, IF BUYER REFUSE TO PAY SALES TAX, THAN TRANSACTION WILL BE CANCEL AND BUYER WILL BE REPORTED TO EBAY. SHIPPING: Boxing and shipping via FedEx ground to addresses in the USA continental ONLY and shipping rate is rated to all 48 state, please do not ask for the lower shipping rate. Shipping is $100 (NONE REFUNDABLE ) FEDEX DO NOT DELIVER TO PO.BOX, MUST HAVE A VALID ADDRESS.ALASKA, HAWAII & PR BUYERS must ask for the shipping rate before bidding. ATTENTION: INTERNATIONAL BIDDERSALL INTERNATIONAL BUYERS MUST USE EBAY GLOBAL SHIPPING PROGRAM, I HAVE NOTHING TO DO WITH EBAY GLOBAL SHIPPING RATE, THIS BETWEEN BUYER AND EBAY, IF YOU DO NOT LIKE THE EBAY GLOBAL SHIPPING COST THAN PLEASE DO NOT BUY THE ITEM.

This Yamaha M85 has been recapped and cleaned. power amplifier is a great addition to any home audio system. The Yamaha M85 is a top-rated amp at 4.5 out of 5 in the example shown in the pictures. It has a phenomenal 260W RSM per channel into 8ohms. frequency response is 20Hz to 20KhzI and has good reliability. It can also do class A outputs. it delivers excellent sound quality for a wide range of music genres. The Yamaha M85 is designed with high-quality components. It is compatible with a variety of audio devices, including CD players, turntables, and digital audio players. BUYER WILLPAY 100.00 FOR SHIPPING. WILL SHIP ANYWERE INTHE US. WILL NOT SHIP TO A PO BOX

One of a Kind M-80! Immaculate near MINT unit.Both Channels Fully rebuilt!All small Audio caps refreshed with new Nichicon Muse and WIMASpeaker posts upgraded to Banana (prior work done by Legendary amplifiers). (Pls inquire about installing higher-end posts, see pic for one option) The transformers were removed, cleaned and repainted as the old foam disintegrates and makes them look ugly. (prior work done by Legendary amplifiers)2 weeks worth of labor has gone into rebuilding this amplifier!All Yamaha 66H service Bulletin mods are installed, making this the same as an M-85, only better.Fully serviced/ Biased/ TestedThese units would blow up because of corrosive glue used in the 80s. This has been Mitigated. All Glue cleaned and all parts around it have been replaced. This unit is as reliable as a new unit. You will not find a better unit. Hence the asking price.Both channels were upgraded to the K-amps kit. Replacing eight 150watt outputs, with Sixteen 130watt devices (Also used in Nakamichi Power amplifiers) on each channel. ie OEM build had four output devices for Audio duties capable of Sourcing 2 amps at 80volts or about 160 watts x 4 = 640 watts per channel before self-immolation. The rebuilt channels have Eight output devices, each able to source 1.8amps at 80v or 144 watts per device or 1152 watts before they go over-spec. It is much more robust now. This makes the amplifier 2 ohm stable. Drivers upgraded from the 20-watt parts to 150watt parts for reliability, and current delivery. Tested Prior to clipping: Both channels driven: 8 ohms - 282 watts x24 Ohms - 400 watts x22 ohms - 625 watts x2 (not recommended for the stock Yamaha M-80 , but this with enhanced output stage has no issues driving this load) ** As the unit is vintage: No warranties are implied. All sales are final. Having said that, this unit has been tested and found Fully functional Both channel heatsinks were stripped, cleaned, sanded, lapped and installed with K-amps MT200 kits. This amplifier now has 32 output devices!!! That is Krell and Threshold territory! This is for anyone who wants a unique build, the best. There is no M-80 like this. ** While the rebuilt amplifier can drive 2 ohms, it still has a thermal limit imposed by the size of the heatsinks. So I would not connect 4 pairs of speakers and run it to its limits as speakers can vary from 2-30 ohms in impedance along the frequency spectrum. So 3-4 pairs could cause a sub 1 ohm dip. One pair that drops to 2 ohms in certain areas is ok. I have tested this at 2 ohms resistive.

One of a Kind M-80! Immaculate near MINT unit.Both Channels Fully rebuilt!All small Audio caps refreshed with new Nichicon Muse and WIMASpeaker posts upgraded to Banana (prior work done by Legendary amplifiers). (Pls inquire about installing higher-end posts, see pic for one option) The transformers were removed, cleaned and repainted as the old foam disintegrates and makes them look ugly. (prior work done by Legendary amplifiers)2 weeks worth of labor has gone into rebuilding this amplifier!All Yamaha 66H service Bulletin mods are installed, making this the same as an M-85, only better.Fully serviced/ Biased/ TestedThese units would blow up because of corrosive glue used in the 80s. This has been Mitigated. All Glue cleaned and all parts around it have been replaced. This unit is as reliable as a new unit. You will not find a better unit. Hence the asking price.Both channels were upgraded to the K-amps kit. Replacing eight 150watt outputs, with Sixteen 130watt devices (Also used in Nakamichi Power amplifiers) on each channel. ie OEM build had four output devices for Audio duties capable of Sourcing 2 amps at 80volts or about 160 watts x 4 = 640 watts per channel before self-immolation. The rebuilt channels have Eight output devices, each able to source 1.8amps at 80v or 144 watts per device or 1152 watts before they go over-spec. It is much more robust now. This makes the amplifier 2 ohm stable. Drivers upgraded from the 20-watt parts to 150watt parts for reliability, and current delivery. Tested Prior to clipping: Both channels driven: 8 ohms - 282 watts x24 Ohms - 400 watts x22 ohms - 625 watts x2 (not recommended for the stock Yamaha M-80 , but this with enhanced output stage has no issues driving this load) ** Both channel heatsinks were stripped, cleaned, sanded, lapped and installed with K-amps MT200 kits. This amplifier now has 32 output devices!!! That is Krell and Threshold territory! This is for anyone who wants a unique build, the best. There is no M-80 like this. ** While the rebuilt amplifier can drive 2 ohms, it still has a thermal limit imposed by the size of the heatsinks. So I would not connect 4 pairs of speakers and run it to its limits as speakers can vary from 2-30 ohms in impedance along the frequency spectrum. So 3-4 pairs could cause a sub 1 ohm dip. One pair that drops to 2 ohms in certain areas is ok. I have tested this at 2 ohms resistive.

Yamaha M-80 in beautiful physical condition, functionally fully working. This been fully tested, bias is set. Class-A bias confirmed. This is a later model that has all the Yamaha mods (Technical Bulletin 66H) that made the unit more reliable. With the Yamaha updates, this essentially is identical to the M-85. The unit is VERY clean, and ALL Stock (except for a few components Diodes/ capacitors/ resistors that I replaced to mitigate the corrosive glue issue with these amplifiers). These M-80s sound amazing, however corrosive glue on two capacitors would corrode nearby diodes and resistors and 2 little capacitors, I have cleaned the glue and replaced the faulty components. The amplifier is now fully functional. The output stages and main capacitors are all good and stock, as is the speaker posts. I tested full power into 4 ohms and prior to clipping gave me more than 450 watts into 4 ohms (both channels driven). The condition is excellent! The new owner will be very pleased with this vintage unit. Sounds amazing, soft, delicate, detailed. Please see all photos and ask questions!

Yamaha M-80 in fair physical condition, functionally fully working. This been fully tested, bias is set. Class-A bias confirmed. This is a later model that has all the Yamaha mods (Technical Bulletin 66H) that made the unit more reliable. The unit came to me with one faulty channel, it ended up being the last tech installed fake parts that caused the issue. Since these outputs are no longer made, I opted to retrofit newer more reliable outputs. These are similar to the ones the MX-1000u uses. I used special MT200 adapters to install these. They are MORE reliable than the OEM now. I replaced all 4 (despite 2 working) outputs of the audio section for consistency. I left the top 4 power supply switchers as is, as they are not part of the audiopath. They were fine and OEM anyway. No need to increase cost for the new owner. It sounds great, and into 8 and 4 ohm dummy loads before clipping, it put out 280 watts and 400watts respectively. I tested the class A for a couple of hours, the top got to 60c and the amplifier worked flawlessly. The condition is ok, there are few areas that make it show its age, but only if you look at it from different angles. I can tell the rear posts have been repaired (common to have these broken during shipping). The repair looks solid, they filled the empty cavity with epoxy to give it more strength than the OEM posts. The top cover has some dings from prior shipping, nothing significant, but needs to be mentioned. The starting price reflects the condition of the amplifier. This is for the frugal user who prefers function more than form. Still, its in pretty good condition, but not Museum quality. Please see all photos and ask questions!

One of a Kind M-80! Immaculate near MINT unit.Both Channels Fully rebuilt!All small Audio caps refreshed with new Nichicon Muse and WIMASpeaker posts upgraded to Banana (prior work done by Legendary amplifiers). (Pls inquire about installing higher-end posts, see pic for one option) The transformers were removed, cleaned and repainted as the old foam disintegrates and makes them look ugly. (prior work done by Legendary amplifiers)2 weeks worth of labor has gone into rebuilding this amplifier!All Yamaha 66H service Bulletin mods are installed, making this the same as an M-85, only better.Fully serviced/ Biased/ Tested You will not find a better unit. Hence the asking price.Both channels were upgraded to the K-amps kit. Replacing eight 150watt outputs, with Sixteen 130watt devices (Also used in Nakamichi Power amplifiers) on each channel. ie OEM build had four output devices for Audio duties capable of Sourcing 2 amps at 80volts or about 160 watts x 4 = 640 watts per channel before self-immolation. The rebuilt channels have Eight output devices, each able to source 1.8amps at 80v or 144 watts per device or 1152 watts before they go over-spec. It is much more robust now. This makes the amplifier 2 ohm stable. Drivers upgraded from the 20-watt parts to 150watt parts for reliability, and current delivery. Tested Prior to clipping: Both channels driven: 8 ohms - 282 watts x24 Ohms - 400 watts x22 ohms - 625 watts x2 (not recommended for the stock unit, but this with enhanced output stage has no issues driving this load)** Both channel heatsinks were stripped, cleaned, sanded, lapped and installed with K-amps MT200 kits. This amplifier now has 32 output devices!!! That is Krell and Threshold territory! This is for anyone who wants a unique build, the best. There is no M-80 like this. ** While the rebuilt amplifier can drive 2 ohms, it still has a thermal limit imposed by the size of the heatsinks. So I would not connect 4 pairs of speakers and run it to its limits as speakers can vary from 2-30 ohms in impedance along the frequency spectrum. So 3-4 pairs could cause a sub 1 ohm dip. One pair that drops to 2 ohms in certain areas is ok. I have tested this at 2 ohms resistive.

Bedienungsanleitung-für Yamaha M-80 Original Bedienungsanleitung wie auf dem Bild zu sehen ist Privatverkauf, keine Rücknahme, keine Garantie Kein Versand ins Ausland

Yamaha M-80 in fair physical condition, functionally fully working. This been fully tested, bias is set. Class-A bias confirmed. This is a later model that has all the Yamaha mods (Technical Bulletin 66H) that made the unit more reliable. The unit came to me with one faulty channel, it ended up being the last tech installed fake parts that caused the issue. Since these outputs are no longer made, I opted to retrofit newer more reliable outputs. These are similar to the ones the MX-1000u uses. I used special MT200 adapters to install these. They are MORE reliable than the OEM now. I replaced all 4 (despite 2 working) outputs of the audio section for consistency. I left the top 4 power supply switchers as is, as they are not part of the audiopath. They were fine and OEM anyway. No need to increase cost for the new owner. It sounds great, and into 8 and 4 ohm dummy loads before clipping, it put out 280 watts and 400watts respectively. I tested the class A for a couple of hours, the top got to 60c and the amplifier worked flawlessly. The condition is ok, there are few areas that make it show its age, but only if you look at it from different angles. I can tell the rear posts have been repaired (common to have these broken during shipping). The repair looks solid, they filled the empty cavity with epoxy to give it more strength than the OEM posts. The top cover has some dings from prior shipping, nothing significant, but needs to be mentioned. The starting price reflects the condition of the amplifier. This is for the frugal user who prefers function more than form. Still, its in pretty good condition, but not Museum quality. Please see all photos and ask questions!

Yamaha M-80 power amplifier with red LED watt meters. Unfortunately it needs work. Comes on but no sound output from either channel. Sold as-is and as-pictured for parts or repair.

One of a Kind M-80! Immaculate near MINT unit.Both Channels Fully rebuilt!All small Audio caps refreshed with new Nichicon Muse and WIMASpeaker posts upgraded to Banana (prior work done by Legendary amplifiers). (Pls inquire about installing higher-end posts, see pic for one option) The transformers were removed, cleaned and repainted as the old foam disintegrates and makes them look ugly. (prior work done by Legendary amplifiers)2 weeks worth of labor has gone into rebuilding this amplifier!All Yamaha 66H service Bulletin mods are installed, making this the same as an M-85, only better.Fully serviced/ Biased/ Tested You will not find a better unit. Hence the asking price.Both channels were upgraded to the K-amps kit. Replacing eight 150watt outputs, with Sixteen 130watt devices (Also used in Nakamichi Power amplifiers) on each channel. ie OEM build had four output devices for Audio duties capable of Sourcing 2 amps at 80volts or about 160 watts x 4 = 640 watts per channel before self-immolation. The rebuilt channels have Eight output devices, each able to source 1.8amps at 80v or 144 watts per device or 1152 watts before they go over-spec. It is much more robust now. This makes the amplifier 2 ohm stable. Drivers upgraded from the 20-watt parts to 150watt parts for reliability, and current delivery. Tested Prior to clipping: Both channels driven: 8 ohms - 282 watts x24 Ohms - 400 watts x22 ohms - 625 watts x2 (not recommended for the stock unit, but this with enhanced output stage has no issues driving this load)** Both channel heatsinks were stripped, cleaned, sanded, lapped and installed with K-amps MT200 kits. This amplifier now has 32 output devices!!! That is Krell and Threshold territory! This is for anyone who wants a unique build, the best. There is no M-80 like this. ** While the rebuilt amplifier can drive 2 ohms, it still has a thermal limit imposed by the size of the heatsinks. So I would not connect 4 pairs of speakers and run it to its limits as speakers can vary from 2-30 ohms in impedance along the frequency spectrum. So 3-4 pairs could cause a sub 1 ohm dip. One pair that drops to 2 ohms in certain areas is ok. I have tested this at 2 ohms resistive.

Yamaha M-80 in fair physical condition, functionally fully working. This been fully tested, bias is set. Class-A bias confirmed. This is a later model that has all the Yamaha mods (Technical Bulletin 66H) that made the unit more reliable. The unit came to me with one faulty channel, it ended up being the last tech installed fake parts that caused the issue. Since these outputs are no longer made, I opted to retrofit newer more reliable outputs. These are similar to the ones the MX-1000u uses. I used special MT200 adapters to install these. They are MORE reliable than the OEM now. I replaced all 4 (despite 2 working) outputs of the audio section for consistency. I left the top 4 power supply switchers as is, as they are not part of the audiopath. They were fine and OEM anyway. No need to increase cost for the new owner. It sounds great, and into 8 and 4 ohm dummy loads before clipping, it put out 280 watts and 400watts respectively. I tested the class A for a couple of hours, the top got to 60c and the amplifier worked flawlessly. The condition is ok, there are few areas that make it show its age, but only if you look at it from different angles. I can tell the rear posts have been repaired (common to have these broken during shipping). The repair looks solid, they filled the empty cavity with epoxy to give it more strength than the OEM posts. The top cover has some dings from prior shipping, nothing significant, but needs to be mentioned. The starting price reflects the condition of the amplifier. This is for the frugal user who prefers function more than form. Still, its in pretty good condition, but not Museum quality. Please see all photos and ask questions!

Yamaha M-80 Stereo Power Amplifier 250 Watt Per Channel Amp - Upgraded Speak Posts Fully tested and 100% functional; this amplifier has the wattage to power most any home stereo system. It even features an Auto Class A switch to activate its Class A circuitry. When this switch is not engaged it functions as a Class AB amp. It was gone over by our tech and given a clean bill of health. We upgraded the old speaker posts to more modern and convenient banana jacks. Cosmetically, it exhibits some wear from over the years but is overall very good. The specs for this powerhouse are in the last image.

This Yamaha M85 power amplifier is a great addition to any home audio system. The Yamaha M85 is a top-rated amp at 4.5 out of 5 in the example shown in the pictures. It has a phenomenal 260W RSM per channel into 8ohms. frequency response is 20Hz to 20KhzI and has good reliability. It can also do class A outputs. it delivers excellent sound quality for a wide range of music genres. The Yamaha M85 is designed with high-quality components. It is compatible with a variety of audio devices, including CD players, turntables, and digital audio players. BUYER WILLPAY 100.00 FOR SHIPPING. WILL SHIP ANYWERE INTHE US. WILL NOT SHIP TO A PO BOX