The impedance is a simple value of ohms. The phase angle is a little more odd. The phase angle described how inductive or capacitive the load is. If you think of a full wave, the top and bottom of it together as a 360 degree shape, the phase angle describes where on the wave form, in degrees, the load becomes inductive or capacitive. It’s a measure of how reactive the load is. A negative phase angle describes a load that’s inductive. A positive phase angle describes a capacitive load. To describe it more literally, the impedance is the resistance the load poses to the voltage. The phase angle describes where on the wave form the load will draw or resist current flow. Low impedances with significant negative phase angle tend to draw more current than the impedance alone might suggest.
Opinions requested
So here is my search for opinions. I'm in the rabbit hole dilemma. In search for a more audiophile sound and would like to try a tube or Class D amplifier (or combination of both) to replace an aging Adcom 555II amp. The system consists of Lexicon MC12B Pre/pro using zone 2 for 2 channel listening, Adcom 555II amp, Musical Fidelity A3CD CD, Sony PS 4300 TT and B&W 803D2 speakers. I'm looking at many options but am leaning towards a Rogue Pharao Integrated amp which has the best of both worlds (supposedly) Tube pre and class D amp to replace the Adcom. Has anyone had any experience with the Rogue Pharao and the B&W 803 combination? Or other suggestions? Your replies both positive and negative will be appreciated.