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Upgrading a Sony TA-E9000ES Pre-amp
This thread has 1 response. Displaying all posts.
Post 1 made on Wednesday July 21, 1999 at 15:46
David Schamis
Historic Forum Post
Does anyone know anything about upgrading the firmware version of the 9000ES?

Furthermore, does anyone know how to check the version you have?

Please let me know.


David Schamis
OP | Post 2 made on Friday July 23, 1999 at 22:53
A Gregorich
Historic Forum Post
TO upgrade you need to take it into a Sony Service Center, although you can do it yourself with a PC, Null modem cable and about 7 minutes. Play a CD and turn the +/- knob. It will show the source information followed by the software revision (mine is 1.04 or 1.05.

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