Ground control to Major components.
The optimum configuration for each system is one Ground/Earth for the whole system. If a system has multiple Grounds/Earths, then it often creates unwanted ground loops. These systems will then have an annoying low-frequency hum (emitted from the speakers).
Current solutions either jeopardise (i) both safety and EMI shielding (e.g. cheater plug), or (ii) EMI shielding. And most are single country (US) uses only.
The GND Defender in the correct way, intelligently detects a ground loop and will cut the ground for that component.
AI ground detection.
With a GND Defender at the IEC power input, it will intelligently detect and remove the ground loop at the component.
Behind this, the GND Defender:
- Intelligently breaks DC ground loops to eliminate ground loop hum
- EMI shielding is retained
- Equipment Safety is unaffected (not a ground lift – so maintains equipment safety ground)
If multiple ground loops exist, more than one GND Defender may be required.
The GND Defender is smarter than the average ground lift. By a long way.
The GND Defender is not only at the cutting-edge in terms of technology but also safety:
- High-performance glass passivated semiconductor
- High Case Dielectric Strength of 1500VRMS UL Listed
- X7R Capacitor
- High-temperature stability
- Flame resistant IEC socket/connector/chassis
- Fireproof polymers UL94-V0
Remember that best practice is to always keep at least one direct power cable connection.
Tom Evans who makes very nice phono stages made the following astute comment:
A rumble filter simply adds to the bass cut making your already “cut” records sound bass light. Plus, it “time-steps” the bass in relation to the higher frequencies (where our hearing is most sensitive) so much so it can confuse the ear into believing the bass is playing out of tempo.
Since the very first iPHONO launched in 2012, we have used our own in-house ‘Subsonic Filter’. It made it into the iPHONO2 and the iPHONO3 and now, the ZEN Phono which is the very first time this filter is seen in such an affordable price level.
As there is only minimal vertical modulation remaining at very low frequencies with an an actual cut LP that is playable, we know that “vertical modulation” at low frequencies must be warp.
So we designed a filter to take advantage of this.
This is not artificial but real knowledge. By understanding fully how LPs are cut and replayed, it is possible to filter record warp strongly without at the same time attenuating low bass or adding group delay.