Equalizer in a Hi Fi system

@erik_squires +1

transformer coupled inputs make perfect sense from circuit design side, specifically if long balanced 600 Ohms cables used between impedance matched units. Jeff Rowland uses those for almost all his designs! The “only” problem is a very high cost of good ones :-). 

Most all electronics in the pro world are unbalanced, "single ended" and use transformers to obtain balanced connections to the outside world.  The CO is no exception.  In the HiFi world, with very few long cable runs, I opine that balanced is unnecessary BUT a users choice.  And they do add their own sound.  The transformers are from CineMag - CMO / CML.

All of the CO electronic products were originally made in the Dominican Republic by a company that did VERY nice work.  Lost track of CO shortly after that project.  Do know that Mike D tried to bring production into the US and encountered a few false starts. Had/have no idea if the company he later worked with continued production of his products.  If so the build could be VERY different than the original (layout and parts selection).  Maybe tlcocks can post a pic of the ORIGINAL insides. 

Unfortunately I don’t anymore. Mike quit supervising the other company s work around 2018 and they changed production. Changed faceplate. Sounded inferior from that point on. 

Assume skimped on internals as well. Didn’t explain that well

I believe that i previously said that I used to use a top of the line DBX equalizer. I no longer need it since my room is completely treated and is semi-anechoic.   

I will be putting it on eBay soon, or if you are interested, you can reach out to me directly. 
 

Good luck.