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View Full Version : FS : Rare Vintage Trio KA-4000


swampy
02-02-2016, 14:47
Very rare 1970's vintage amplifier.
Very good condition with aluminium front and all solid aluminium knobs.
It has been fully re-capped on the pre-amp and Phono stages. New pre-amp transistors also fitted so it is quiet.
Bypass caps fitted in the power supply section.
I have the optional wooden side cheeks but these maybe want sanding and varnishing or replacing.
Very clean inside. Probably one of the best versions of this model I have ever seen.



NOTE :

This has a minor fault which does not affect function in normal use. When the volume pot is below 1/4 way sometimes the right channel will go off. Wiggle the volume pot up and down a little and it comes back on. Above 1/4 way and it is fine. I have tried cleaning the pot but I think the carbon track is either getting too worn out near the bottom end or the wiper is making poor contact with the track so it maybe needs a new pot. However this is a 3 way pot since it has a balance control. So you need to source a new 3 gang pot maybe from another vintage amp or replace it with a regular stereo one and lose the balance control. It does not always do this and some days it can be fine.

£65 + postage (about £10) or collect M29 area



http://www.dms-audio.webspace.virginmedia.com/photos/trio1.jpg

http://www.dms-audio.webspace.virginmedia.com/photos/trio2.jpg

http://www.dms-audio.webspace.virginmedia.com/photos/trio3.jpg
Xapito
02-02-2016, 15:15
Pm sent, ta.
Firebottle
02-02-2016, 15:43
That is clean :eek:
rdpx
02-02-2016, 20:47
I like the "MONO OUT" socket.

I have no idea what you would plug into it, but it makes me happy that it is there.

:)
r100
02-02-2016, 20:52
Sometimes, I wished I lived nearer to the source of such nice hi-fi bits and pieces :scratch:
Brigadoon
02-02-2016, 21:27
No, no, no, I mustn't...........
rdpx
02-02-2016, 23:33
Sometimes, I wished I lived nearer to the source of such nice hi-fi bits and pieces :scratch:

Sometimes I wished I lived nearer to the Alps.

:)
lafty
03-02-2016, 13:12
is this still available? If so, what's the dimensions?
ta
Xapito
03-02-2016, 14:13
Pending payment afaik. :eyebrows:
r100
03-02-2016, 17:36
Sometimes I wished I lived nearer to the Alps.

:)

:lol:

only good for skiing and trekking... not for HiFi.. but wait, snow outside, a nice Chalet, a fire going in the fire place, feet up on a cushion after a day's skiing, a cool beer in one hand and some tunes on a vintage stereo...hmmm, ya maybe the Alps are good for HiFi after all ;-)
KONDO
05-02-2016, 23:22
I like the "MONO OUT" socket.

I have no idea what you would plug into it, but it makes me happy that it is there.

:)

i think a sub woofer