6581 stereo match

[thumper]

Hi all,

 

I have been a fly on the wall here for a while but am about to embark on my first (of many) MIDIbox projects.

 

In the run up to a mb-6582 using 8 x 6582A, I am thinking about building a stereo 6581.

 

I have a chip already and am looking at buying another which is the same revision, manufacturer and year but was made 5 weeks earlier.

 

Is this close enough for a good stereo match, or do they deviate even from week to week?

 

The chip I have is an MOS R4AR.

 

Cheers!

[Imp]

You can mix any revisions of 6581. This ain't High-end-HIFI.