Koetsu black, lacking bass


Greetings 
i just installed a new koetsu black cartridge. I love the clarity of this cartridge. I was using a lyra kleos , which is a great cartridge but the clarity of the koetsu black is at another level.
does anyone know if the black cart is light in the bass? It seems to me that  the bass sound of my system has diminished with the koetsu. Is this a break-in characteristic? I should mention that I installed a furutech gtx outlet which is still in the break-in phase. I’m using a clearaudio magnify tonearm with a clearaudio performance tt. My preamp is a McIntosh mp1000 with acoustic zen ic cables. Mcintosh ma252 amplifier, focal aria 948 speakers with transparent super speaker cable. Any insight and knowledge would be helpful and appreciated!
thank you
dpoud
Isn't the Black is the most darker sounding Koetsu, also the cheapest model from them? 
Mijo
Exactly what I made in varying sizes so to obtain differing weights from some old brass bar stock I had in my workshop.
Cut into slightly different lengths, clean up edges with a file, drill two holes and all set.
And sitting on top of a black headshell they actually look pretty darn good as well as being functional.
Did you change to the Koetsu at the same time as changing the receptacle? 
If so, have you tried your rig on a regular outlet?