Thanks to iFi UK and Avatar Acoustics (USA), I’ve been running the new
iFi iPower (9V) MSRP $50? USA
through some equipment in the past weeks, and wanted to provide an overview.
Caution: this is NOT a complete review, nor an in depth audible “impact” report of iPower for reasons explained below.
The iPower itself:
When first announced it seemed a single iPower model might drive 5V/9V/12V, but this is not the case.
Three individual iPower models will be available for order soon, and knowing what DC voltage your device requires is paramount before ordering the iPower in 5V/9V/12V.
From the photo it’s obvious that the iPower is slightly larger than previous SMPS included with iFi (micro) product line, includes a removable plate for country specific prongs/outlets, and (not shown) a small (ferrite?) bead in the cable approx. 1 ft from the cable termination.
Where and how the iPower reduces the audio noise floor is unknown to me, but there must be some mojo inside the wall wart itself.
(Likely the 12 element output array)
I was loaned an iPower 9V, which was perfect for iCan, iTube and my USB Regen.
The Use cases:
iFi units such as iCan and iTube had been shipping with the previous (but not sold separately AFAIK) iFi SMPS.
with audio path being iMac—>Audirvana+—>iFi micro iDSD—>iTube (pre-amp)—>iCan—>HE-560
I took turns swapping out the power supplies for both iTube and iCan, and replacing with the iFi iPower 9V.
Summary of results:
very hard to consistently notice audible changes when using iFi iPower 9V.
at times, I could hear a tad better defined bass, or a more realistic cymbal brush. but in a blind test not sure my ears could reproduce identification in all trials.
I attribute this to a few things:
a) my house/room has relatively decent power running out of the wall, and some previous “electrical noise cleaning” products have made no noticeable effect in my computer fed audio environment.
b) the original iFi SMPS is already real good. ie. quiet. (10uV)
c) USB signal into micro iDSD is already “cleaned up” by it's built in iPurifier. so maybe SMPS impact downstream on the analog devices is further minimized? (a guess)
Onward:
iFi iPower 9V
+
UpTone Audio USB Regen (Green, early model)
the Regen is a new USB reclocker and power leg solution for USB fed DACs.
Regen has impressed me for weeks now, can’t live without it. Likely because a 2009 iMac is not the most pure USB output source.
Regen delivers increased clarity and resolution while not losing PRaT or squashing depth of soundstage, which did happen a tad with a different USB re-clocker.
Setup =
iMac with Audirvana+ 2.10, Wireworld Starlight 7 USB cable to Regen to adapter into Gungnir, feeding Lyr 2 (Telefunken E88CC tubes) to HE-560 (YFS Super30 Litz cable and open grills).
Spent at least 40min back and forth testing between
Regen stock wall wart power SMPS
vs.
Regen using new (demo) iFi iPower 9V.
It took awhile to nail down differences, which I suppose could be within error margins- but in the end my ears found Regen with iPower so slightly easier to notice and pick out details when instruments were layered on top of each other. drum kit sounds had slightly better definition in space.
Now Gungnir isn't the most micro detail delivering DAC, so slight improvements might apply differently to other rigs.
putting subjective numbers on the audible differences, would give regular SMPS power Regen a 94.
Regen with iPower a 97.
Why no 100?
Well I don't own a LPS, and figure that may inch quality up another couple notches?
And, nothing is perfect in this hobby right? Ha!
Other iPower Uses:
It was explained to me that other audio devices like Squeezbox, Sonos, etc would benefit more directly from clean iFi iPower, as consumer grade equipment does not pay close attention to SMPS impact on audio quality.
alas, I scoured my house and didn’t find other 9V DC audio devices on which to test iFi iPower.
IIRC, iFi will start including iPower with all NEW micro iFi purchases- meaning new customers will not need to spend additional $ to receive the quieter SMPS.
With the affordable pricing, folks who might have questionable power in room, or travel staying at hotel rooms with (typically) worse power sources, or if you find numerous 5V/9V/12V DC fed audio devices around your house- connecting the iFi iPower is certainly worth experimentation time and low cost.
Next Up:
Thoughts and summary of iTube+iCan, a combo first heard back at RMAF 2014 but not since.