[sdiy] Silver series TL074/84 op amps

[Gordonjcp]

On Sat, Mar 19, 2016 at 03:08:23PM -0700, rsdio at audiobanshee.com wrote:
> Over the years, I've seen countless authentic, unadulterated, functional pieces of audio gear with DIP chips that are silver instead of black. I believe that the only way you're going to get to the bottom of this is to collect date codes and manufacturers from authentic chips and then seek out the vintage data sheets for those chips. There should be some official documentation of the chip markings, including the color.

I wonder if it's down to opacity?  I know that epoxy isn't *totally* light tight, particularly to IR.

-- 
Gordonjcp