Prime HiFi

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@barskuleli8612 10 сағат бұрын

What an elegant piece of hi-fi history…

@john-three16 3 күн бұрын

I just found your channel and started binge watching. I couldn't figure out why this amp has only 2 filter caps. The smarties at Technics used one transformer for the positive rail and the one for the negative. Nice vids.. keep em coming.. thx

@rtacconi 4 күн бұрын

Amazing and detailed thank you

@johnbravo7542 4 күн бұрын

Sounds like my wife when she falls in a deep sleep.

@infostarhanger 5 күн бұрын

Do you fix amps as a business? What state are you in?

@ossianhaufe4671 8 күн бұрын

What kind of music did you listen?

@gregrivera8520 9 күн бұрын

yes i get it. you the easy restore guy. you like nothing hard, only easy. how about working on something hard like on a Denon 2802 or any Denon.

@PrimeHiFi 9 күн бұрын

Because no piece of Denon equipment is worth working on 😄

@LEGOBubuS 10 күн бұрын

Do not listen to anybody, do what you like or can..😊 They can go back to watch 15sec TikTok videos.. 😅 Amazing job! Just subbed! 🎉❤ Can I ask which camera model you use? Very nice autofocus and video quality.. 😮

@keithtrauner1738 11 күн бұрын

If you were to recommend among the HK 770, the Sanyo P55, and the Technics SE-A7 - power output aside - which do you consider the most restoration friendly and which did you like the most when all was done? Thanks!

@PrimeHiFi 10 күн бұрын

Definitely the SE-A7. It’s really a wonderful sounding and performing amplifier. I still use one in my reference system to this day. The hk770 is dead simple and incredibly easy to service, but the SE-A7 is still fairly straightforward.

@jrg1man1978 11 күн бұрын

Wow with the previous guy's solder. I'm a million miles from a professional tech but wow. Would've measured and kept those Elna Silmic II.

@rjonzun5828 12 күн бұрын

This was a fantastic restoration. I loved every minute of it. I watch a lot of audio restoration channels but this has to be my favorite video. Please keep them coming.

@tshov171 13 күн бұрын

What area are you in?

@GeeyouPadmananda 14 күн бұрын

Superb

@GeeyouPadmananda 14 күн бұрын

Lick this

@countdebleauchamp 15 күн бұрын

I'd forgotten that I had one of those in my youth! I was buying so many different pieces at the time. Very good amplifier.

@thesoggykitten6981 15 күн бұрын

Great work Connor!

@djonmull4883 17 күн бұрын

уу дас ист гут унд фантастишь ..!

@varghesethomas6882 18 күн бұрын

Hello, do you have the Marantz SC80 Stereo Control Amplifier available for sale? Thank you!

@Dreez76 18 күн бұрын

I wish you lived in my country so i could send you my Pioneer A-09 Class A amp for service.

@toneyisaiah3556 22 күн бұрын

It takes a long time to put it together.

@toneyisaiah3556 22 күн бұрын

It's like working on your car. Mechanics go through the same thing.

@toneyisaiah3556 22 күн бұрын

Cost to replace everything in the stereo amplifier.

@rolandd5397 23 күн бұрын

How does it sound before and after. Any improvement?

@rjonzun5828 24 күн бұрын

Dude you are meticulous. I love it. Subscribed.

@bobrose7900 28 күн бұрын

Great! Love the power cable and interconnects... Wiring looms - use thread to bind, looks wonderful, zip ties are very "industrial". I get a lot of grief for soldering and not crimping, but you've proved a point here. Testing - use a reactive load (speaker coil), this makes a difference compared to straight resistive, or at least a range of resistances - 2-16ohm. These older amps are wonderful and respect to the owner. Loved watching this, well done!

@leerothman7570 28 күн бұрын

I sold audio gear in the 70's and 80's. I owned a Vfet amp and have to say they were some of the sweetest most open sounding amps that ever came around. I worked for a dealer that sold Ohm speakers and in the mid to late 70's was their west region sales rep. Those Sony VFet amps sure were sweet. It was so satisfying to watch your restoration.

@lexvankooten1 Ай бұрын

Great video! Question: What does the subsonic-filter exactly do??

@linjia9539 Ай бұрын

The camera moves too fast and too frequently

@bartvanransbeeck1341 Ай бұрын

Kenwood LO7 ? Withkefs top sound❤

@SteveBoobJobs Ай бұрын

Hi, I have a 725 hooked up to a 770; when i turn ON the 770, the red power light comes on, but none of the indicator LED's do not turn on. I purchased brand new RCA's just to be sure, but still no dice. I bought the pair from an ebay seller and he swears up and down that it "was working".... Any advice would be greatly appreciated

@SteveBoobJobs Ай бұрын

@jhunbriones6965 Ай бұрын

I am having a headache watching your video as you move around quickly while holding each circuit board to show the components that possibly needs replacing. It would be better if you keep the circuit boards on the table then slowly move the camera along the components including the opposite soldered board side as you explain the possible faulty parts and your suggested solutions to restore vintage stereo. Your video presentation is very informative and Love learning from your presentation.

@enricoligia. Ай бұрын

Magnificent work

@robertsenior2274 Ай бұрын

Hi, I’ve just come across your youtube on the Sansui AU717 amplifier restoration. I live in the UK. I take it the AU710 is the same as the AU717 due to it looks identical or was the AU717 made for the American market. Are the components available to buy online. I haven’t switched it on for years, but when i did, it sounds great. I am worried now if i switch it on i might do damage to my speakers or the amplifier.

@wulliewebster4596 Ай бұрын

What's sodder?

@lovegivingoutlovegivingout6503 Ай бұрын

Build like a tank👍🏻👍🏻👍🏻

@Z4NL Ай бұрын

Great videos, really appreciated the longer format restorations, I also repair and restore vintage audio equipment next to my regular job although I rarely see hign end masterpieces like this one and it's preamp companion on my bench. Thanks for showing your methods and approach to problems, used tools and circuit modifications. Looking forward to the next one!

@repsych Ай бұрын

Thanks,I had no idea that Kyocera made stereo gear; I've only associated them with optical and ceramics products.

@batmandestroys1978 Ай бұрын

Absolutely magnificent work! You are a genius and so modest! Your music selection is glorious! I have actually downloaded these songs! I hope you have kept the Technics SE A7 amplifier! It is absolutely beautiful!

@Nickbazukaho3nt Ай бұрын

A1943 & c5200 Work in this amp?

@ixfxi 2 ай бұрын

Thank you for taking the time to do this restoration and capture it on video, and share it with the rest of the world. I have owned many of the Kenwood L-series pre amps and amps and as a person who does hobby restoration, I ran into the same issues in trying to restore my MKI L07C... the traces lifted and I admitted defeat and ended up scrapping the unit. Damn shame because I got so many years (decades actually) of enjoyment. I also ran into the oscillation issues with the L07MII amps in where I immediately put them up for sale and reverted back to the MKI amps. Even with these issues, they are just such quality pieces of gear and they provide such a beautiful sound. Thinking back I want to say I've gotten about 30+ years of enjoyment out of them before parting ways and going with <somewhat> newer equipment. I ended up replacing the L07C with a Sony TA-E88 which I feel is superior, but still the Kenwood stuff is just great. Thanks again for the video and hard work, it shows!

@ixfxi 2 ай бұрын

I have had many, and I mean many of these amplifiers... they are fantastic. Unfortunately, the MMII are the worst of the bunch given their defects.... but its great to see that you have come up with a solution for servicing and repairing them. This looks better than new. Over the years the MKI amps were the ones I held onto the longest because they did not suffer from these defects. I was fortunate enough to also own several L09M amplifiers which were built like tanks, but I eventually sold them as they did not perform well at low impedances. L07/09 are absolutely fantastic amps though, if only there were more qualified/skilled technicians out there capable of servicing them..... and enough people with fat enough wallets willing to pay. Really great work though, impressive!