We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black and silver over-ear USB headset with boom microphone

Koss

Koss SB45 USB Headset 178203

SKU CH-JNE3-4JBSY

USB headset with noise-cancelling microphone, leatherette ear cups and 18–20000 Hz frequency response for clear communication

  • ColorBlack and Silver
  • Weight1.9
  • Clear voice technology with noise-cancelling microphone eliminates background disturbances
  • 103 dB SPL rating provides a safe listening experience
  • Over-ear leatherette ear cups seal out ambient sound for comfort
  • 8-foot single-entry USB cord ensures a secure connection
  • 18 to 20000 Hz frequency response covers full audio range

Koss SB45 USB Communication Headset

The Koss SB45 is a wired USB headset built for clear voice communication and multimedia listening. Its over-ear leatherette cups and adjustable headband suit long sessions at a desk. The integrated boom microphone uses noise-reduction technology to suppress background sound. It connects through a single USB plug for immediate recognition on most computers.

USB audio limits and cable reach

The headset draws power and audio through the USB interface, so it relies on the host controller for conversion quality. Frequency response spans 18 to 20000 Hz with a 100 ohm impedance and 103 dB SPL sensitivity. An 8-foot straight cord with single-entry routing gives generous slack but cannot be detached or replaced if damaged.

Compatibility and fit check before ordering

Verify that your system has a free USB-A port and supports standard USB audio class drivers. The over-ear design seals around the ears, so users who prefer on-ear pressure or need a lighter device may find the 1.9 kg weight noticeable. No inline volume or mute controls are present on the cable.

Highlights

  • Clear voice technology with noise-cancelling microphone eliminates background disturbances
  • 103 dB SPL rating provides a safe listening experience
  • Over-ear leatherette ear cups seal out ambient sound for comfort
  • 8-foot single-entry USB cord ensures a secure connection
  • 18 to 20000 Hz frequency response covers full audio range

Specifications

BrandKOSS
ColorBlack and Silver
Weight1.9

Questions about this item

Should I pick the SB45 over other Koss USB headsets for speech-recognition work?

The SB45 is built for PC voice applications with a noise-canceling boom microphone and clear-voice technology that targets background disturbances during dictation or calls.

What does the 103 dB SPL rating mean for everyday use?

103 dB SPL sets a maximum output level that keeps listening volume in a safe range while still delivering crisp highs, mids and bass for voice and media.

How does the USB interface affect the headset's performance?

USB provides a direct digital connection that powers the headset and carries audio without a separate sound card, limited by the 18–20000 Hz response and 100 ohm impedance of the drivers.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.