What's the difference between these two? Both are Sennheisers GSP 600 but the logos are different, the one has the E (EPOS) logo and the other the classic Sennheiser one. : r/sennheiser
EPOS Sennheiser Impact SC 630 Professional Mono Headset 1000554 - VoIP Supply
EPOS/SENNHEISER Impact SC 230 USB Mono Wired On-Ear 1000516 B&H
EPOS Sennheiser Impact SC 660 Duo Headset 504557 | VOIPANGO