[sdiy] Arp 2600 replacement op amps

[anthony]

Personally I'd actually keep the LM301's - it's not as bad as you think. I 
think BiFET amps are way overrated for audio. Suitably compensated the LM301 
can have very good high frequency response. The only place I could see using 
FET amps would be in areas where you need a higgher impedence, but in a 
synth environment that would likely only be if you were intending on 
interfacing a guitar with it...

But if they really are only LM301's you can trade them for LM301A's.

If you really want to go the BiFET route LF356's are available in cans like 
LM301's.


> Hi all,
>
> I want to replace the 301 op amps in my 2600 with better ones - I've 
> looked through the synth-diy / analogue heaven archives as well as the 
> music machines website and they seem to recommend LF411 or similar FET op 
> amp. I am also aware that I would need to disconnect the frequency 
> compensation caps. as modern op amps have this internally.
>
> My question is: where can I get some op amps that would be suitable BUT in 
> a metal can? There are some metal can CA3140's on ebay, but they're not so 
> cheap, and I will need lots!
> Or, is there such a thing as DIL to TO-5 package socket converter?
> Or do I have to have to insert loads of stripboard and wire DIL op amps 
> in?
>
> Any advice gratefully appreciated.
>
> James
>
>