Noble Audio SULTAN Universal Fit In-Ear Monitors (Open Box) headphone cables The PowerStation has an earth/ground

The PowerStation has an earth/ground socket so you can add a ground cable to rid yourself of buzz/hum caused by no earth

while their case can charge them back up 5x over

Formats supported DSD

Signal/Noise: > 95 dB

Noble Audio SULTAN Universal Fit In-Ear Monitors (Open Box) headphone cables The PowerStation has an earth/groundNoble SULTAN Sultan of Sound 7 DRIVERS 10 MM DYNAMIC 4 BALANCED ARMATURE 2 ULTRA FREQUENCY ELECTROSTATIC The Sultan ascends to the flagship line of in ear monitors crafted by the Wizard. Featuring tight yet extended bass by use of a 10mm dynamic driver. Detailed mids with the use of four Knowles balanced armature drivers and beautiful non fatiguing high frequencies rendered by dual electrostatic super tweeters all encased in a bespoke CNC aluminium