1. Bubuka
This manual provides essential information for the proper use and maintenance of your Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset. Please read these instructions carefully before using the headset to ensure optimal performance and longevity.

Image: Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset, front view.
2. Eusi Paket
Pastikeun yén sadaya barang aya dina bungkusan produk anjeun:
- Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset
- Kabel Ngecas USB-C
- Ear Cushions (pre-installed or spare set)
- Pituduh Mimitian Gancang (henteu kalebet dina manual digital ieu)
3. Headset Overview jeung Kontrol
Familiarize yourself with the various parts and controls of your headset.
3.1. Diagram Headset

Image: Diagram illustrating the location of controls on the Koss CS340BT QZ headset.
3.2. Fungsi Kontrol
- Tombol ANC: Ngaktipkeun atanapi nganonaktipkeun Pembatalan Sora Aktif.
- Volume Kaluhur / Tombol Lagu Salajengna: Pencét sakeudeung pikeun ningkatkeun volume. Pencét terus tahan pikeun luncat ka lagu salajengna.
- Power / Play / Pause / Pair / Answer / End Call Button:
- Pencet jeung tahan salila 3 detik pikeun mareuman/nonaktipkeun.
- Press briefly to play/pause music.
- Pencét jeung tahan salila 5 detik pikeun asup ka mode papasangan Bluetooth.
- Press briefly to answer an incoming call.
- Press briefly during a call to end it.
- Volume Turunkeun / Tombol Lagu Saméméhna: Pencét sakeudeung pikeun ngurangan volume. Pencét terus tahan pikeun muka lagu saméméhna.
- Mikropon Boom: Adjustable boom microphone for clear voice communication.
- Port ngecas USB-C: For charging the headset battery.
- 3.5mm Audio Jack: For wired audio connection (cable not included).
4. Setélan
4.1. Ngecas Headsét
Sateuacan dianggo anu munggaran, eusian headset anjeun pinuh.
- Connect the supplied USB-C charging cable to the headset's USB-C port.
- Sambungkeun tungtung kabel anu sanés ka sumber kakuatan USB (contona, port USB komputer, adaptor témbok USB).
- The LED indicator will show charging status (refer to LED indicator section in Quick Start Guide for specific colors).
- Once fully charged, disconnect the cable. A full charge provides up to 30 hours of Bluetooth-only use or 22 hours with ANC enabled.

Image: USB-C charging port.
4.2. Powering on / Pareum
- Pikeun Ngahurungkeun: Pencét jeung tahan tombol Daya / Play / Reureuh button for approximately 3 seconds until the LED indicator lights up.
- Pikeun mareuman: Pencét jeung tahan tombol Daya / Play / Reureuh button for approximately 3 seconds until the LED indicator turns off.
4.3. Papasangan Bluetooth
- Pastikeun headset pareum.
- Pencét jeung tahan tombol Daya / Play / Reureuh button for approximately 5 seconds until the LED indicator flashes rapidly (usually blue and red), indicating pairing mode.
- Dina alat anjeun (smartphone, komputer, jsb.), aktipkeun Bluetooth teras milarian alat anu sayogi.
- Select "Koss CS340BT QZ" from the list of found devices.
- Once paired, the LED indicator will typically show a solid blue light or flash slowly.
5. Operasi
5.1. Active Noise Cancellation (ANC)
The headset features Active Noise Cancellation to reduce ambient noise.
- Pencét éta Tombol ANC once to activate ANC. The LED indicator for ANC will illuminate.
- Pencét éta Tombol ANC again to deactivate ANC. The ANC LED indicator will turn off.

Gambar: Panyabutan Bising Aktif dina aksi.
5.2. Nyieun jeung Nampa Telepon
The integrated microphone and controls allow for hands-free communication.
- Ngajawab Telepon: Pencét éta Daya / Play / Reureuh button once when a call comes in.
- Tungtung Telepon: Pencét éta Daya / Play / Reureuh tombol sakali nalika nelepon.
- Ngaropéa Mikropon: Position the flexible microphone boom closer to your mouth for optimal voice clarity. The dual microphone CVC 8.0 technology helps eliminate background noise.
5.3. Puterkeun Musik
- Puter / Reureuh: Pencét éta Daya / Play / Reureuh tombol sakali.
- Volume Up: Pencét éta Volume Up tombol sakali.
- Volume Turun: Pencét éta Volume Turun tombol sakali.
- Lagu salajengna: Pencét jeung tahan tombol Volume Up kancing.
- Lagu Sateuacanna: Pencét jeung tahan tombol Volume Turun kancing.
5.4. Sambungan Kabel (Opsional)
You can use the headset with a 3.5mm audio cable (not included) for a wired connection, bypassing Bluetooth and ANC functionality.

Image: 3.5mm Audio Jack.
6. Pangropéa
- beberesih: Anggo lawon anu lemes sareng garing pikeun ngabersihkeun headset. Entong nganggo bahan kimia anu keras atanapi bahan anu kasar.
- Panyimpenan: Simpen headset di tempat anu tiis sareng garing jauh tina sinar panonpoé langsung sareng suhu anu ekstrim.
- bantal ceuli: The ear cushions are replaceable. Refer to Koss's official website for replacement parts if needed.
7. Cara ngungkulan
Upami anjeun mendakan masalah, cobian solusi ieu:
| Masalah | Solusi |
|---|---|
| Headset teu hurung | Ensure the headset is charged. Connect to a power source using the USB-C cable. |
| Teu bisa masangkeun via Bluetooth | Ensure the headset is in pairing mode (flashing blue/red LED). Turn off and on your device's Bluetooth. Move closer to the device. |
| Taya sora | Check headset and device volume levels. Ensure the headset is properly paired and selected as the audio output device. |
| Mikropon teu jalan | Ensure the microphone boom is positioned correctly. Check privacy settings on your device to allow microphone access for the connected application. |
| ANC teu efektif | Ensure ANC is activated (ANC LED on). ANC is most effective against low-frequency, constant noise. |
8. Spésifikasi
| Fitur | Rincian |
|---|---|
| Ngaran modél | CS340BT QZ |
| Téhnologi konektipitas | Nirkabel (Bluetooth) |
| Téknologi Komunikasi Nirkabel | Bluetooth 5.0 |
| Rentang Bluetooth | 10 méter |
| Kontrol bising | Pembatalan Noise aktip |
| Mikropon | Dual microphone CVC 8.0 |
| Kahirupan batré | Up to 30 hours (Bluetooth only), Up to 22 hours (Bluetooth + ANC) |
| Rentang Frékuénsi | 20Hz - 20,000Hz |
| Impedansi | 36 ohm |
| Panempatan Ceuli | Dina Ceuli |
| Métode kontrol | Tombol Toél / Fisik |
| 3.5mm Audio Jack | Present (cable not included) |
| Item Beurat | 1.4 Pon (kira-kira 0.64 kg) |
| Dimensi produk | 3.25 x 8.68 x 9.06 inci |
| UPC | 021299197196 |

Image: Extended battery life for the Koss CS340BT QZ headset.
9. Garansi jeung Rojongan
9.1. Jaminan kawates
The Koss CS340BT QZ headset comes with a Hiji Taun Garansi Terbatas from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. For full warranty terms and conditions, please refer to the official Koss websitus atanapi ngahubungan rojongan customer.
9.2. Rojongan Palanggan
For technical assistance, warranty claims, or further inquiries, please contact Koss customer support:
- Websitus: Visit the official Koss websitus pikeun sumber rojongan, FAQs, sarta informasi kontak.
- Email/Telepon: Refer to the contact section on the Koss website for specific email addresses or phone numbers.





