Randy,
Ok here's the scoop! We do not have NOS Pre-EB Stingray preamps. We do have about 100 or so pre EB Sabre preamps. They are from the 7O's and do contain a element for a bright switch, and are not exactly the same as the Stingray preamp. We use these for Old Sabre Replacements when they come in for repair.
We do make a replacementpre-amp for the Old Pre EB Sting Ray .
Here is the description from Dudley in our R+D department:
The 2 EQ preamp that we have on hand are exactly the same circuit as the original,except that it has a 1k ohm protection resistor ,which keeps the IC from being shorted. The old ones were notorious for blowing the IC when the output cable was shorted. The New preamps also have electrolytic capcitors,rather than the tantalum capacitors the originals used. Tantalums were the hip new material back in the day ,but they are not the best choice for audio.
If you would like to get one please call customer service @ 866-823-2255 x 126
(They will not need the old pre amp back in exchange!) Correction!!! We would still require to have the old pre -amp back to make sure the new part goes into a MM bass.
Thanks
Derek