I confused on that currency. Is that a euro?
It's a joke.
What are these (photo) worth?
Thanks Doug
Looks on the photo the same like my genuine Vfet's from Acronman Singapore
Attachments
Even an original 3055 in TO-3 is a bit expensive today:
ORIGINAL MOTOROLA 2N3055 BEST QUALITY TO3 POWER AMPLIFIER TRANSISTOR ad1x23 | eBay
I had a DIY integrated amp using these and the 2955 as output device.....many years ago. I remember that "high-end" people did not like 3055.....but the amp did play some nice music!
ORIGINAL MOTOROLA 2N3055 BEST QUALITY TO3 POWER AMPLIFIER TRANSISTOR ad1x23 | eBay
I had a DIY integrated amp using these and the 2955 as output device.....many years ago. I remember that "high-end" people did not like 3055.....but the amp did play some nice music!
4 pairs of VFETs on ebay:
4 pairs of 2SK60 + 2SJ18 V-FET transistors, Original Sony Japan NOS !!! | eBay
4 pairs of 2SK60 + 2SJ18 V-FET transistors, Original Sony Japan NOS !!! | eBay
Even an original 3055 in TO-3 is a bit expensive today:
ORIGINAL MOTOROLA 2N3055 BEST QUALITY TO3 POWER AMPLIFIER TRANSISTOR ad1x23 | eBay
I had a DIY integrated amp using these and the 2955 as output device.....many years ago. I remember that "high-end" people did not like 3055.....but the amp did play some nice music!
A couple of years back I bought in a 1980's Maplin 225WRMS amplifier which was missing output transistors 2N3055 and MJ2955.
So I bought some in and the amp oscillated quite badly.
I had to increase the VAS capacitor to stop the oscillation.
I can only guess the new transistors had higher gain and/or wider bandwidth.
maplinampsold | harrabylad | Flickr
Some (many) years back I built some Quad 405 power amps based on a cloned PCB. It also had some TO-3 housed output transistors (can't remember what it was) but at least one of the amps oscillated and it sounded very bad. At that time I knew an experienced "analog" electrical engineer. He solved the problem by putting a ferrite pearl on the base of the output transistors and everything was perfect. Then I did this on all the output devices just to be sure. I guess the ferrite pearl reduced the bandwidth a bit so phase margin came on the "good side". Apart from that it was a good sounding amp. It remember it had an opamp as input device.
I recall the price was about $25+ back when they were available out of Singapore.
People would probably pay twice that now.
much much more am afraid
genuine ones are 100 dollars each at least , when you're lucky enough to find them.
which i haven't been lately
.
genuine ones are 100 dollars each at least , when you're lucky enough to find them..
So 400 x $100 = $40,000.
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