Sennheiser

EPOS GSX 1000 Gaming Audio Amplifier - USB - Stereo and 7.1 Binaural Surround Sound - Dedicated DAC, Precision Equalizer Settings, Reverb Control - Switch Between Game Sound and Headset

EPOS

GSX 1000 2nd Edition Dac Amp Audio Amplifier/External USB Sound Card with 7.1 Surround Sound, Side Tone, Gaming DAC and EQ, Headphone Amp Compatible with Windows, Mac, Laptops and Desktops

Sennheiser Epos Expand 20 Wired Conference Speakerphone Black, Silver (1000226)

EPOS

Sennheiser Consumer Audio SC 60 USB ML (504547) - Double-Sided Business Headset | For Skype for Business | with HD Sound, Noise-Cancelling Microphone, & USB Connector (Black)

Fosi Audio

Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs

EPOS

Sennheiser SC 30 USB ML (504546) - Single-Sided Business Headset | For Skype for Business | with HD Sound, Noise-Cancelling Microphone, & USB Connector (Black)

EPOS

Sennheiser PC 5 Chat - Headset for Internet Communication, E-Learning and Gaming - Noise Cancelling Microphone, Casual Gaming Lightweight, high Comfort, Minimalistic, Black

Neoteck

Portable 3.5mm Headphone Amplifier Two-Stage Gain Switch, 16-300 Ohm, Aluminum Matte Surface

Neoteck

Portable 3.5mm Headphone Amplifier with Bluetooth 5.0 Receiver, Two-Stage Gain Switch, 16-300 Ohm HiFi Earphone Amp, Aluminum Matte Surface

EPOS I Sennheiser GSP 670 Wireless Gaming Headset, 20 Hour Battery Life, Lag-Free, Noise-Cancelling Mic, Flip-to-Mute, Comfortable Ear Pads, 7.1 Surround Sound, Works on PC, Mac, PS5, PS4 & Phone

Fosi Audio

SK01 Headphone Amplifier Equalizer Preamp with Bass Midrange Treble Tone Control and Loudness Compensation Portable Class A Analog Amp for Electric Guitar Instrument with 3.5mm 6.35mm Jacks

Sennheiser Consumer Audio SC 660 USB ML (504553) - Double-Sided Business Headset | For Skype for Business | with HD Sound, Ultra Noise-Cancelling Microphone, & USB Connector (Black)