Onsemi ditching all great Sanyo chip amps .

[Dibya]

I loved sound of LA4708 as it has pretty good warm sound and lovely high frequency performance . Moreover it can be used with single rail . Guess what ? LA4708 no more available in market and I can't build a good amp for my friend under ₹900 . Onsemi didn't market their products properly Sanyo has had excellent design in my opinion and their chips can be improved specially those STK hybrid ICS . I will love anyone from onsemi or Sanyo can reply (thought chances are thinner than air on Mars before Elon Musk do something crazy)

 

[JonSnell Electronic]

The LA4708 was designed as;

Monolithic Linear IC 20W 2-channel BTL AF Power Amplifier for Car Stereo.
They are no longer used in power amplifiers for automotive employment. Class D has taken over.

That is why they are ceasing production.
There are many wholesalers with large stocks of them so I doubt it will become an issue for a few years.

 

[Dibya]

Newer class D chips sounds good but I don't know why I prefer class AB chips over them . I do have TPA3118 & TPA3116 but they have bad High frequency performance .
If someone one listen metal music they will notice high mediately .
Is stk series chips going to return?(any chance)

 

[U130421]

you find on Aliexpress for 0.70$ , free shipment for Thailand, probably for India also.

 

[Dibya]

Sounds AliExpress is selling fake chips . Original chip costed $6 to $7

 

[simon7000]

They could pulls from recycling. I have seen that on obsolete parts. So it might be worth the bet. Decent odds!

 

[abraxalito]

Yes, at a price of $0.70 they'll be recycled ones. New ones go for around $2.

https://item.taobao.com/item.htm?spm=a230r.1.14.17.5b172d0bIEfJn9&id=36758126252&ns=1&abbucket=4#detail

 

[U130421]

I see two types: LA4708 and LA4708N. I don't see anything above 1.5$ .

 

[abraxalito]

I was looking at Taobao (the link I gave) when I quoted the new price as $2.

 

[Dibya]

local repair shop guy has 3 LA4708 in stock thought pulled from some car stereos.
He said LA4628 was another great chip , he has 6 of them .

 

[Dibya]

Anyone used TDA2050 from UTC ? Are they comparable to ST?

 

[fdenys]

Have ordered 4pcs and will soon test them.
My impression is, that UTC is a serious manufacturer, professional data sheets, so i am confident the UTC-TDA2050v will be a reliable performer, but we will see..
Fred

 

[Scottam767]

UTC TDA2050L-TV

I have ordered Qty22 of the UTC TDA2050L-TV at £0.91 each at Profusion plc, Audio Semiconductors (Profusion Ltd - Home Page) in the UK.
This for a prototype amp I am building.