One question in this old thread, first my situation.
I have digital source as a CDP (80 watts) whose internal dac is damn good, a Allo digione ( less than 15 watts) with its default power supply and a tube pre ( less than 80 watts). My power amp s max consumption is 2400 watts. My aim is to give clean power to other devices except power amp as I read clean power impacts devices that rely highly on clocks for signal processing (exception tube pre) and also thus capacity will be required lesser for the power supplier. Should I be contended with a CVT or a power regenerator or a Linear PSU wherever applicable (like digione) or a combination of multiple of these. Please advise.
Hi haisaikat....
I have been considering on similar lines recently. And below is what was recommended to me on other forums :
1. Seperate power lines for all sources + preamp - Let's call this power line 1
2. Seperate power lines for power amp - Let's call this power line 2.
Power amp on powerline 2 is not very sensitive to power. So this can just be a dedicated line directly from mains. And if you feel you have very poor quality power, then adding a CVT + isolation transformer is recommended. As long as these have 2 times the max power draw of the Amps. There will be sufficient headroom for dynamics. Power conditioners or filters usually reduce the dynamics. Besides, power amps have sufficient capacitors and their power supplies are robust enough to make up for any fluctuations in current and voltage.
Digital sources, DACs and preamps are the sensitive electronics in the chain, that usually don't come with very robust power supplies. And they need all the pure power that can be supplied. And on the positive side, their current draw is not much. So the below are to be achieved in the same :
1. Keep voltage constant - CVT or servo stabilizer
2. Isolation from power line noise - isolation transformer.
3. Keep power properly shaped - pure sine wave regenerators or some models of online ups that achieve the same. Even some CVT achieve the same.
4. Galvanic isolation between all source components, especially kit having SMPS modules like Amazon fire TV sticks and cell chargers.
I have been considering a combination of CVT + isolation transformer to achieve point nos 1 to 3. I have a star wired power block that achieves the galvanic isolation required as per point no.4. So depending on the number of boxes you can accommodate, you can go for an all in one, or seperate boxes. Just like in a audio chain, seperate boxes offer better power than one integrated solution.
