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the regulator is a limiting factor

The power supply into the Regen is also a limiting factor.

Whilst waiting for the delivery of a LiFePO4 battery and a charger, I have by coincidence also been testing various forms of power supply into the Regen.

1. Terdak 9V into a TPS demo regulator set at 7.5 V output into the Regen.a The sound is OK but lacks the dynamics and resolution of a truly good system. Bass is somewhat loose.

2. SMSL 9V into the same system as above. SQ is much improved and a pleasure to listen to.

3. 5200 mAH LiPO battery direct into the Regen. Bass and mf + lf better resolved but slightly lacking in musicality of system 2. Bass is firmer though.

This SQ characteristic of the Regen needs to be qualitfied by the choice of LPS into my CI329 PC. Worst off is a 10A lab supply available on Amazon and elsewhere. With an extra 10000uF of added capacitance plus other hf bypasses, SQ is fine in the absence of a better LPS.

With a Paul Hynes 2.2A Shunt supply. Sound is musical and sound stage wide and deep but a little 'yang'. The overall sound is rather different from that from the lab supply and as different as using different supplies into the Regen. I shall need to reduce the standing current to about 1A for this shunt supply and listen again, not liking the very high component (50 to 70 C) temperatures when all that is needed is about 10VA or less.

With a Chinese 8A superegulator with R Core transformer (not the LT 19xx chipped variety) SQ is excellent, and even better when I bypassed the output with high quality hf capacitors built into the output silver coated ptfe power cable.

So the change in SQ using different power supplies into your PC is as much as that which can be obtained thru playing with the Regen power supply.

Hence my comment that it is difficult to say which tweak and which setup produces the best SQ. In fact, disabling the Windows Management Instrumentation Service in my audio PC giving the Player software real time priority causes as much change in SQ as other tweaks done without!


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