[QuadList] Ampex Mark 10 head

[Roger Brett]

Hello Don,
I have never been able to compare the VR-1100 and 1200/2000 heads so 
what is the identifying difference that you're talking about with the 
preamps?  How can it be seen externally?

Thanks,
Roger
On 11/17/2014 6:35 PM, Don Norwood via QuadList wrote:
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