Sony TA - N7B Amp

[Audio Al]

Some years ago I purchased this amp and it had issues :( , It was consigned into a wardrobe in the bedroom :(

Some years later I found it again and decided to get it sorted , at first I though it may be V fet issues , however after speaking to Mike Powell he said If a V fet had blown ( No longer available ) you would get no sound out of the affected channel , I packed it up and sent it to Bolton in Lancashire for a rebuild and testing , Some time later Mike contacted me saying its all done and ready to come back home :)

All Caps renewed even the 4 massive ones , had to wait 2 months for these to be made , Did I say they are massive :)

Mike has had it on test and has given it a clean bill of health , Cant wait to get it back , I asked Mike to do something with the pony binding posts that had at some time been fitted , they are now proper :)

This is a link to the VK web site showing the power amp :eyebrows:

http://www.thevintageknob.org/sony-TA-N7B.html

[walpurgis]

I wondered when you'd get around to doing something with that Al. :)

It should sound superb.

[Audio Al]

Forgot to say the RCA connecters have been replaced the gold plated units :)
Fully DC, with two transformers for the regulation, two toroidal transformers for the power stages and a total 88,000µF of caps. The frame structure and back "holders" are made of diescast aluminium. The toroidal trafos were custom-ordered to Nippon Kinzoku, a company still in business today which must have provided most if not all toroid trafos to high-end JP hi-fi throughout the 70s and early 80s.

Only 3000 made for use WORLDWIDE :D

[Bigman80]

I'd love to hear that.

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[walpurgis]

I'd love to hear that.

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I have heard it, but it wasn't at its best.

Always wanted a TA-8650 VFET jobbie.

[Bigman80]

Also desirable. I do have love for the old Sony gear.

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[Audio Al]

I'd love to hear that.

And me as well :D

[Bigman80]

I'd love to hear that.

And me as well :DI'm looking forward to hearing your thoughts on it when you do plumb it in!

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[Audio Al]

I'm looking forward to hearing your thoughts on it when you do plumb it in!



Should be here wednesday :)

[Bigman80]

🤤 I'm jealous. Not gonna lie lol

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[RMutt]

[QUOTE=Bigman80;885174]I'd love to hear that.
[/QUOTE

I think you mean you'd love NOT to hear it.

[Bigman80]

[QUOTE=Bigman80;885174]I'd love to hear that.
[/QUOTE

I think you mean you'd love NOT to hear it.Haha, yes, they are a rare beast indeed. I imagine very pricey too!

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[walpurgis]

[QUOTE=Bigman80;885174]I'd love to hear that.
[/QUOTE

I think you mean you'd love NOT to hear it.

:scratch:

[Macca]

Lovely bit of kit. What speakers will you use it with, Al?

[Bigman80]

[QUOTE=RMutt;885425]

:scratch:I think the suggestion is I would want one if I heard it [emoji3]

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[RMutt]

I've got you both confused. What I meant was, that you shouldn't really hear an amplifier, just what it is amplifying.

[Bigman80]

I've got you both confused. What I meant was, that you shouldn't really hear an amplifier, just what it is amplifying.Ah, that makes sense. And very true!

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[karma67]

ooooh id sell a kidney for that amp !

[walpurgis]

ooooh id sell a kidney for that amp !

Sounds a reasonable deal! :D

[TazSob]

http://www.diyaudio.com/forums/pass-labs/302380-sony-vfet-illustrated-build-guide.html
Guess someone could make one

[Audio Al]

Lovely bit of kit. What speakers will you use it with, Al?

Spoilt for choice Martin

Will start with the MS 737 with the Decca London ribbons , then the H6 then the Ram 400 then the big JBL's then then !! :D

[Macca]

It should love all of them.

[Audio Al]

It should love all of them.

:) hope so , Just unpacked it , Oh my back hurts , I was advised to remove the feet when sending it off , Now I cant find the safe place I put them in :doh:

I have a guest who invited himself coming over tomorror for a listen :D

[Bigman80]

:) hope so , Just unpacked it , Oh my back hurts , I was advised to remove the feet when sending it off , Now I cant find the safe place I put them in :doh:

I have a guest who invited himself coming over tomorror for a listen :DWell!!!!!!!!! How is it!!!!!!! [emoji39]

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[Audio Al]

Not telling
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Until tomorrow :ner:

[Audio Al]

:eek:

[Bigman80]

Lol

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[Audio Al]

:eyebrows:

[Audio Al]

No report yet as I changed to many things at once due to a faulty cart tag on my 10.1 Pro Ject TT :doh:

Have been using CD different cables , different pre amp all trying to find why one channel was pulsing in and out

:doh: DOH

New cart tags on order :)

[Bigman80]

AAAARRGGGHHH! the suspense is killing me!!!!

[Macca]

That's why I always test new kit with digital. Makes fault finding much simpler. Just too many thing that can be broken or set wrong with a TT :)