item_audio wrote:I'm surprised by your findings, Nige . . . the SuperFlower is measurably less noisy than the PicoPSU. Also, with the fan set to Eco rather than Auto, it shouldn't spin up.
i had it on auto ill test it again
The cost of the Leadex (branded EVGA in the States) is very similar to the linear bench + Pico. At present, it certainly seems better than any other 'off the shelf' ATX supply.
best atx supply ive tested by quite a margin
And it will respond better to filtering fore and aft than the linear+Pico route we used to promote. With such filtering in place, the same levels of 'quietness' can be achieved for much less money than a three rail linear - and with much greater headroom for the more powerful processors we are going to need for optimal DSD resampling.
are you using capacitors to filter?
the haswell chips dont need much power, dont think it would be an issue
So I see the future belonging to high capacity, universally compatible switching supplies like the Leadex, with filtering and transformer isolation being the upgrade path, not a reinvention of the wheel - or wrangling the compatibility issues going all linear direct to mobo entails. Believe me, we've been there!
i understand your position i wouldn't want to deal with the customer service part of sales either, easier to work with off the shelf parts as far as sales are concerned
when looking to push the boundaries multiple lifepo4 batteries would be difficult to beat
The other part of my thinking on this is that by the time you've separated the PCIe bus from the PC with a power injector, and isolated the USB power from the DAC's viewpoint - and, crucially, prevented the AC-DC stage from injecting noise into the mains, a very high quality switcher will be absolutely 'good enough'. And I don't use the G.E expression lightly . . .
the pcs timing is based on the noisy power supply it is supplied with it will always have an effect downstream, and probably some other stuff i dont understand, but much improvement would be had isolating the pci card and dac
always amazes me the sq thats achieved with our pcs when its such a flawed system ;)