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Hi, Jeff, What's wrong with the internal preamp on the A807? (I have my own pet peeves, but I'm wondering why you're going the external route). AME was never a consumer format, so I would dismiss that. I am one of a handful of people equipped for AME reproduction on current equipment, and I've supplied some of the AME filters to other transfer houses. You'll find it on 2- and 3-channel masters from the 1960s at 15 in/s. See the info at http://www.flash.net/~mrltapes CCIR is widely used in Europe, but I doubt (m)any of your tapes will be that format. A stock A807 can be set up to switch between CCIR and NAB. Please note that at 3.75 in/s, there is no difference between U.S. (NAB) and European practice. Again, see the MRL Web site. The table on page 3 of the "Choosing and Using..." document indicates that the IEC EQ was used only in professional circles in Europe. Consumer machines and pre-recorded tapes worldwide apparently followed the NAB standards. Cheers, Richard At 03:44 PM 11/15/2004 -0600, you wrote: >I'm getting a Studer A807 fitted out for archival use and plan to use an >external head preamp. I've been asked what EQ curve I'd like to use (NAB, >CCIR or AME) but am not sure what curve, if any, was used for consumer open >reel decks and/or commercially duplicated reels? Most of what I'll be >working with is 2 and 4 track reels at 7 1/2 IPS, with about a 50/50 mix of >consumer recorded and pre-recorded reels. In cases where I have recording >deck info it's generally machines such as older Teac A series, Sony and Akai >units of '60s vintage. Any help is greatly appreciated. > > > >Thanks, > > > > >Jeff Kane