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dbx 161-Mods

Working on two of these beauties right now. Nice design, nice PCB layout. The customer wants new caps, a few power supply repairs and to add Jensen input and output transformers to these normally unbalanced units. The 160 (the famous unit) uses the same PCB as the 161 but a has a solid state balanced input and output circuit populated. This mod, IMO, is way better ;)

dbx 160 vs. dbx 161

Does anyone know the significant difference between the dbx 160 and the dbx 161 besides balanced vs unbalanced? is it only the transformers?

I have inherited a pair of 161 and would like to make them into the 160 if it is at all a reasonable project.

any advice, info, links would be hugely appreciated!

thanks