Yes Ck started with just my Nuforce then added piece by piece the rest of the system. I heard no effects in a negative way doing this so thats how i'm using it. The sound of my system has gained more air, bloom, and it has really created a black black ground so much so that micro details are abound.
The difference in the PS and APS are a battery pack with the APS unit. Though with out hearing the PS would not know what it would bring.
The difference in the PS and APS are a battery pack with the APS unit. Though with out hearing the PS would not know what it would bring.