Thanks Sid..

Can a Bachmann "DCC Onboard" loco be controlled by a different brand of system like a Digitrax system?

No I just wanted to know if I HAD to use the Bachmann booster when I had a adjustable power supply. I know I can run Bluetooth controlled trains on the DCC voltage tracks at least that's what I was led to believe. All the conversation now is mute point as I already stated I wasn't going to use the power supply.
Thanks for all the input

Thanks.

OK think I got it.   NO!!! don't try it.
Thanks again

Thanks folks, you all gives me direction, and what care to take. If I back down the buss to 1 - 2 amp connected in the middle of the buss  and the EZ Command connected at a separate point will the DCC carrier wave
work? I planned on running some EZ App locos on the same line.

Knowing the polarity must be the same, can the DCC E-Z command controller be wired into a non Bachmann 16V DC, 5 amp buss with no reverse loops.