Owner's Manual

the Tech
SPDIF iPurifier2
However, establishing a closer relationship with this interface, comes at a cost.
Timing accuracy (or should we say inaccuracy) often detracts from the S/PDIF
experience. Jitter as the parameter of timing inaccuracy is what impacts the data
stream the most.
Jitter. What complications does it carry?
Jitter is the degradation of the audio signal when converting from analogue to
digital and vice versa. Jitter is an audible deviation of the signal on the time
spectrum, between the time when an event occurs and when it should take place.
It affects data and clock signals, and if left unmitigated, it then manifests itself in a
significantly lower audio quality.
Jitter causes deficiencies in two audio domains; conversion and digital
interference. When the audio conversion is exposed to this phenomenon, sampling
jitter may induce errors, distortion and noise, whereas data corruption and loss of
lock are a result of the digital interference. These obstacles turn an audiophile
experience into an empty promise.
iFi audio. How do we solve the jitter issue?
After nearly four decades of research experience by our Chief Designer Thorsten
Loesch, iFi audio created an elegant and highly effective solution to eliminate jitter
once and for all - the SPDIF iPurifier2. This petite accessory is here to stamp out
S/PDIF jitter, fully restore the compromised signal's integrity, rejuvenate sound
quality, and create an increased warmth, depth and dynamic contrast.
SPDIF iPurifier2 challenges jitter on four levels:
1) Reclocks with the 10MHz Global Master Femto Clock – lower jitter
2) Regenerates with the full galvanic isolation of the source device from the DAC –
lower jitter
3) Restores with the reduction of the ambient and power-related electromagnetic
interference – lower jitter
4) Revitalises with the ultra-clean iPower supply – lower jitter
Before
After