FourT6and2
100+ Head-Fier
- Joined
- Apr 17, 2015
- Posts
- 196
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- 52
I suppose if it takes 2-3 hours a day for 30 days to burn it in you could just leave it on for 4-6 hours for 15 days haha. I do believe there is some validity to a higher quality power supply that leads to any discernible sound quality differences between the 789 and HPA4. Had they been identical I think it would be impossible to tell the difference between the two..
Maybe. Power supply effects usually come down to filtering and the amp having enough clean power without any ripple current to meet any output demands. I think in these types of amps they can both handle your average 120v mains just fine, even with dirty power. I do have some professional Furman units I can plug both into but I don't anticipate any difference. I have the Furman P-1800 AR and P-1800 PFR. One is a voltage regulator that outputs a constant, clean 120v source and the other is a power filter that filters out and cleans any "dirty" power to eliminate ripple. I use them with vacuum tube guitar amps because fluctuations in mains voltage greatly affects that sort of thing. But with a digital audio system like a DAC and a solid state headphone amp, I don't think it will do much. But hey, worth a try.