The iCAN runs in pure class A, has enough power for all but the hungriest headphones, has two levels of XBASS, crossfeed, a more out there 3D than the iDSD and sounds fantastic.
Hi,
Pretty succinct. We would only add that there are many good Class A headphone amplifiers on the market that sound great. But what makes the micro iCAN a little above and beyond in a sea of headphone amps is the TubeState
® circuit which AMR developed for the micro iCAN. Something that gives it the 'Factor X.' The micro iCAN uses a discrete circuit that deliberately and nicely models the way tubes amplify audio. We call it TubeState
®.
From our own R&D testing, we can assure you that the Tubestate
® circuitry dishes out quite a large dollop of sonic improvement and is the core ngredient behind its sonics, more so than the pure Class A. This is what you are getting that gives the iFi micro iCAN that extra ‘Factor X’ – over and above other mains powered Class A headphone amplifiers. So yes, the iCAN is better than the micro iDSD on the headphones but it is also nicer sounding than many other desktop headphone amplifiers too, because it is deliberately made to sound like a good tube headphone amplifier. And so, mains power is needed for TubeState
® so not possible on battery/USB power at this juncture.
But all is not lost, while the micro iDSD has neither the battery current nor the circuit board space to include the ‘Tubestate
®’ circuit, in its place there is a (Burr Brown ‘SoundPlus
®’) Op-Amp, one of the best you can get and close in character to the Tubestate
® circuit, but just not quite as warm, ‘tubey’ sounding.
Other than this change from Tubestate
® discrete pre-stage to Soundplus
® Op-Amp and extra Class A current in the output stage, the Headphone Amplifier of the micro iCAN and of the micro iDSD are essentially identical in circuit design and structure, when the iDSD micro is set to 'normal.'
Ultimate, TubeState does not match real tubes but it just gets darn close.
Cheers.