Adapters & Connectivity

HamiltonBuhl® Deluxe Active Noise-Cancelling Cord — Convert Any 3.5 mm Headphone into a Headset Add clear voice capture to your favorite classroom headphones. This noise-canceling microphone cord converts a standard 3.5 mm headphone into a TRRS headset for Chromebooks, laptops, and tablets with a combo jack. It’s a budget-smart way to enable speaking tasks, language labs, and remote learning without replacing your entire fleet. Key Features Turns headphones into a headset: Inline mic adds voice input while keeping your existing over-ear or on-ear headphones. Noise-canceling mic: Designed to reduce ambient classroom noise for clearer speech on calls and recordings. TRRS single-plug device end: Works with most combo-jack Chromebooks, laptops, and tablets. Quick setup: Plug your headphone’s 3.5 mm plug into the cord’s female jack, then plug the cord’s male TRRS into the device—done. Fleet-friendly: Save budget by upgrading audio capability without buying new headsets. Compatibility Headphones: Any model with a standard 3.5 mm stereo (TRS) plug. Devices: Combo-jack (headphone+mic) ports using CTIA wiring (most Chromebooks, many laptops/tablets). USB-C only? Use a USB-C to 3.5 mm headset adapter that supports mic. USB-A only? Use a USB sound adapter or choose a native USB headset. How to Use (30 seconds) Unplug your headphone from the device. Insert the headphone’s 3.5 mm plug into the cord’s female 3.5 mm jack. Insert the cord’s male 3.5 mm TRRS plug into the device’s combo jack. Select “Headset” (or similar) as Input/Output in device/app audio settings and test the mic. Typical Specs Connections: 3.5 mm female (headphone in) → 3.5 mm TRRS male (to device) Microphone: Inline, noise-canceling Use case: Language labs, speech assessments, video calls, remote learning Cable: Classroom-length with strain relief (varies by batch) Note: Exact cable length and control layout may vary by production batch. Refer to product packaging for any model-specific details. Classroom Tips Label cords and headphones with matching numbers (1–30) to speed handouts/returns. Keep device-safe wipes and spare earpads to extend fleet life. Store sets in racks or bins to avoid cable damage. Compare Your Options Solution Port Mic Best For ANC Mic Cord (this page) 3.5 mm TRRS Inline noise-canceling Upgrade existing headphones for speech AC-155 Mobile Headset 3.5 mm TRRS Boom mic Native headset for combo-jack carts AC-155 USB Headset USB-A Boom mic Desktop/lab USB AE-36 USB-C Headset USB-C Boom mic New USB-C fleets Buying for a class or district? We accept POs and offer volume pricing. Request a quote.

Califone 10-Person Tour Group System The Califone 10-Person Tour Group System is designed to facilitate clear communication in classrooms, presentations, and group settings. This comprehensive system includes a transmitter, receiver headsets, and essential accessories, ensuring effective audio delivery to up to 10 participants. System Components WS-T Transmitter – Central unit for audio transmission WS-R Receivers (10 units) – Wireless headsets for participants 3060AV Headphones (10 units) – High-quality headphones for clear audio reception WS-CH 4-Piece Beltpack Rechargers (3 units) – For charging the receivers WS-CHP Power Adapter – Provides power to the system WS-CS12 Carrying Case – Durable case for convenient storage and transport Key Features Wireless Communication – Enables clear audio delivery without the need for wired connections Multi-User Support – Accommodates up to 10 participants simultaneously Portable Design – Easy to transport and set up for various events Durable Components – Built to withstand frequent use in educational environments Warranty: 1-year warranty for educational use. View Product We accept Purchase Orders from schools, businesses, and government institutions. Free shipping on orders shipped to the 48 contiguous United States. Every product undergoes a quality assurance check.

Modern devices are often wireless to provide added convenience, especially within the classroom. However, purchasing all new equipment can get pricey. The Wireless Upgrade Package helps upgrade your existing classroom equipment, turning wired PA systems into wireless PA systems. This package includes a headset, transmitter, and receiver, as well as two charging cradles. The WS-CK1 Wireless Upgrade Package from Califone enables you to upgrade your existing wired PA system into a wireless system and change the frequency range of a 700 MHz system to the FCC mandated 900 MHz frequency range. The package includes a HBM319 headset microphone, a WS-T wireless transmitter, a WS-R wireless receiver, and two WS-CR charging cradles with power adapters. You can plug an anchored audio source such as an MP3 player or computer into the system and wirelessly transmit it to your existing wired PA system. The transmitter provides an adjustable range of up to 300' within line of sight; it has a 3.5mm mic input to which the included HBM319 headset can be connected, and can be either worn on the hip or around the neck with a lanyard. Features/Inclusions: HBM-319 headset WS-T wireless transmitter and WS-R wireless receiver Two WS-CR charging cradles included Power adapter included Warranty: For use in school for 1 year

The 10-Person Assistive Listening System is ideal for collaborative lessons, allowing multiple users to receive the same audio. One transmitter, ten receivers and ten headphones are included to provide a complete setup, along with a charging cradle and beltpack chargers to ensure long-lasting battery life. If you are looking for an assistive listening system for your student or classroom, the 10-Person Assistive Listening System is ideal. Includes: one WS-T transmitter one WS-CR beltpack recharging cradle Includes: ten WS-R receivers, ten 3060AV headphones Includes: three WS-CH 4-piece beltpack rechargers Includes: one WS-CHP power adapter and one WS-CS12 case Warranty: For use in school for 1 year

The WNC Bluetooth Dongle is a plug-and-play USB adapter designed to connect your WNC‑2100, WNC‑2500, WNC‑3000, or WNC‑3100 headsets to your PC or Mac. Ideal for educators and students who need seamless wireless audio without installing complex drivers. Why classrooms like this dongle Simple USB plug-and-play setup Compatible with WNC‑2100, WNC‑2500, WNC‑3000, and WNC‑3100 headsets Enables wireless audio connection to computers Supports hands-free calling when paired with compatible software Ideal for classroom, lab, or remote learning environments Compatibility & Use Cases Use this dongle to connect your WNC series headsets to Windows or macOS devices. Perfect for online classes, virtual meetings, or any scenario requiring wireless audio connectivity. Care & Usage Plug the dongle into an available USB port on your computer. Allow for automatic installation. Once installed, your headset should connect wirelessly. Keep the dongle in a dry, dust-free environment when not in use. Tech specs Compatibility: WNC‑2100, WNC‑2500, WNC‑3000, WNC‑3100 headsets Interface: USB 2.0 Operating Systems: Windows and macOS Functionality: Wireless audio connection, hands-free calling support Warranty: 1 year (school/institutional use)

The HamiltonBuhl VENU100 Wireless PA System is a versatile, all-in-one portable public address system designed for educational settings, conferences, and events. It combines multiple media playback options with wireless microphone capabilities, ensuring clear and powerful sound delivery in various environments. Key Features Multi-Format Media Playback: Supports CD, DVD, MP3, and cassette formats, allowing playback from various media sources. Wireless Microphone System: Includes dual UHF wireless microphones for clear and uninterrupted audio transmission. Bluetooth® Connectivity: Built-in Bluetooth receiver enables wireless streaming from compatible devices. Rechargeable Batteries: Equipped with high-capacity internal batteries for extended usage without the need for constant recharging. Portability: Features a telescoping handle and easy-glide rubber casters for convenient transportation. Durable Construction: ABS-engineered plastic shell ensures durability and impact resistance, suitable for various environments. Specifications Power Output: 100W peak / 60W RMS Speakers: 10" woofer and 1" tweeter Frequency Response: 80Hz – 15kHz ±3dB Wireless Microphone Operating Distance: Approx. 75–100 feet (line of sight) Battery Type: (2) 12V 7Ah rechargeable batteries Inputs: 1/4" wireless/wired mic in, XLR mic in, 3.5mm aux in, RCA line in Outputs: RCA line out, DVD video out Dimensions: 19" L x 28" H x 20" W Weight: 46 lbs Included Accessories Dual UHF wireless microphones Remote control AC adapter 4 AA batteries (for microphones) Ideal for schools, hotels, churches, and any venue requiring a reliable and portable PA system, the VENU100 ensures excellent sound quality and versatility for various audio needs.

Koss UR40 Foldable Headphones – Lightweight, Durable, and Perfect for Student Learning Designed with students in mind, the Koss UR40 Foldable Headphones offer the perfect combination of comfort, portability, and exceptional sound quality. At just over 6 ounces, these lightweight headphones are perfect for long study sessions, classroom activities, and on-the-go learning. Their collapsible design ensures easy storage and travel, making them the ideal choice for educators, students, and anyone in need of reliable, portable audio solutions. Key Features & Benefits: Lightweight & Portable Design: Weighing just over 6 ounces, the Koss UR40 headphones are ultra-light, making them perfect for students of all ages. The foldable design allows them to easily collapse into a compact shape, making them simple to store and travel with—ideal for busy students and classrooms. Superior Sound Quality: Equipped with a full-frequency range of 15-22,000 Hz, these headphones deliver clean, crisp sound that transforms any recording into a vibrant "live" experience. Whether it's for music, lessons, or multimedia content, enjoy deep bass and clear treble across a wide audio spectrum. Comfortable & Durable: Featuring closed leatherette ear cushions, the UR40 provides a snug, comfortable fit that enhances bass and blocks out unwanted distractions. The cushioned ear cups are designed to form a tight seal around the ears, providing hours of comfortable listening, even during extended study sessions. Oxygen-Free Copper Voice Coils: Designed to deliver greater volume levels, even with low-voltage portable devices, the UR40 headphones are powered by oxygen-free copper voice coils, ensuring superior sound performance without distortion. Stay Connected with Your Environment: The screened ear cups allow users to stay aware of their surroundings, offering an open, hear-through sound that’s perfect for environments where students need to remain alert to external sounds while enjoying their audio content. Portable and Travel-Friendly: With an airy mesh sling for soft, breathable support, the Koss UR40 ensures maximum comfort for long-term use. The headphones come with a straight, dual-entry 4-foot cord that’s ideal for use with computers, tablets, and other audio devices, plus gold-flashed 3.5mm plugs for reliable connectivity. Koss Lifetime Warranty: Covered under the Koss Stereophones Limited Lifetime Warranty, you can trust the UR40 headphones to provide reliable performance throughout the years. Koss has built a reputation for durability, making these headphones a smart long-term investment for students and educators. Specifications: Frequency Response: 15-22,000 Hz for full-range audio Voice Coils: Oxygen-free copper for clear, distortion-free sound Ear Cushions: Closed leatherette for improved bass and noise isolation Cord: Straight dual-entry 4-foot cord with dual plugs for easy connection Plug: Gold-flashed 3.5mm (1/8-inch) plug for secure, high-quality connection Weight: Just over 6 oz – lightweight and easy to carry Warranty: Koss Limited Lifetime Warranty for peace of mind Why Choose Koss UR40 Foldable Headphones? Whether you’re a student looking for reliable headphones for school or a teacher in need of a durable audio solution for the classroom, the Koss UR40 Foldable Headphones provide everything you need. With superior sound, long-lasting comfort, and a portable design, these headphones are built to enhance the learning experience and make everyday audio tasks easier and more enjoyable.

The Stereo Standard Phone (1‑4") Plug to Stereo 3.5 mm Mini Jack Audio Adapter lets you convert classic 1/4" stereo plugs into standard 3.5 mm jacks. Perfect for integrating older audio gear, mixing desks, or shared classroom devices without replacing devices. Why classrooms like this adapter Allows 1/4" stereo plugs to connect with 3.5 mm ports — great for compatibility Compact and lightweight — easy to stash in tech kits No power or drivers needed — plug-and-play solution Durable construction for frequent use in shared settings Specifications Connector 1: 1/4" stereo male (standard phone plug) Connector 2: 3.5 mm stereo female (mini jack) Compliance: RoHS certified Quality Assurance Every adapter passes Learning Headphones’ QA check before shipment to ensure it works reliably in classroom and shared device environments.

Koss QZ5 Passive Noise Reduction Headphones – Superior Sound, Ultimate Comfort, and Unmatched Noise Isolation Unlock a new level of listening experience with the Koss QZ5 Passive Noise Reduction Headphones. Engineered to provide outstanding sound quality and exceptional noise isolation, these headphones are perfect for audiophiles and anyone looking to enjoy their music, radio, or scanner without distractions. Designed for both indoor and outdoor use, the QZ5 offers durability, comfort, and superior performance wherever you go. Key Features & Benefits: Passive Noise Reduction Technology: Experience unparalleled sound clarity with the QZ5’s advanced passive noise reduction. The Pneumalite™ closed ear cushions and extra-secure headband seal your ears from outside noise, letting you enjoy your audio without interruptions. Crystal-Clear Sound with Neodymium Magnets: Powered by neodymium magnet structures, these headphones deliver crisp, detailed sound and deep bass, making them ideal for audiophiles who demand clarity and definition from every note. Comfortable and Secure Fit: The behind-the-head, extra-secure headband ensures a comfortable, stable fit, perfect for long listening sessions or active use. The ear cushions create a snug seal for superior noise isolation. Convenient Volume Control: Adjust your sound levels on-the-fly with the built-in volume control located directly on the ear cup. No need to fumble with external devices—control your audio right at your fingertips. Stereo/Mono Switch for Flexibility: Whether you’re using the headphones for music or as a communication device, the stereo/mono switch offers the flexibility to easily switch between different audio outputs, making them versatile for various uses. Durable and Travel-Ready: With an 8-foot coiled cord and included adapters, these headphones are ready for any adventure. Compatible with most radios, scanners, and audio devices, the QZ5 is designed for easy, on-the-go use. Koss Limited Lifetime Warranty: Trust in the durability and quality of your headphones, backed by the Koss Limited Lifetime Warranty, ensuring long-lasting performance and peace of mind. Whether you’re a professional, hobbyist, or passionate listener, the Koss QZ5 headphones are built to deliver the ultimate audio experience with unmatched comfort and noise isolation. Elevate your listening experience today with the Koss QZ5 Passive Noise Reduction Headphones.

This Pack of 200 Personal Economic Headphones features soft foam earpads, an adjustable headband, and a standard headphone jack. They are compatible with any computer or mobile device that accepts a 3.5mm / 1/8" adapter. Hamilton PER/200 is a Bulk Pack of 200 Super Affordable personal educational headphones. Design with maximum function and affordability in mind. The Personal Economical Headphones in 200 packs are ideal for use with tablets, mobile devices, computers, MP3 Players, CD Players, and much more. Headphone Specifications: Personal, On-Ear Design Foam Ear Cushions, Replaceable Stereo Headphone 1/8 inch plug Impedance: 170 Ohms Cord: 6 feet Frequency response: 18-20k Hz

Andrea Communications NC-8 Ultralight Head-Mounted Noise-Canceling MicrophoneAward-Winning Speech Recognition & Superior Clarity in Noisy Environments The Andrea Communications NC-8 Ultralight Head-Mounted Noise-Canceling Microphone is the perfect solution for those seeking high-quality speech recognition and crystal-clear audio in noisy environments. With its award-winning "6 Dragon" rating from Nuance, this microphone ensures optimal voice clarity and improved speech recognition accuracy, making it ideal for busy offices, remote work, or voice-based applications. Key Features & Benefits: Ultralight & Comfortable DesignDesigned for long hours of use, the NC-8 is incredibly lightweight and head-mounted, offering all-day comfort without covering your ears. This design allows you to enjoy rich sound from your multimedia speakers while maintaining full awareness of your surroundings. Noise-Canceling TechnologyEquipped with advanced noise-canceling technology, the NC-8 filters out background noise, ensuring clearer voice input for improved speech recognition and increased accuracy. Whether you're in a busy office or a bustling home environment, your voice will be heard loud and clear. Adjustable Microphone BoomThe soft-flex microphone boom is fully adjustable, allowing you to easily position the microphone for optimal voice input. This flexibility ensures that you always get the best sound quality and clarity for your voice commands, dictation, or calls. Perfect for Speech RecognitionWith its "6 Dragon" rating, the NC-8 excels in speech recognition applications like Dragon NaturallySpeaking, making it an excellent choice for professionals who need fast, accurate dictation or voice commands in noisy environments. Compatibility: Wide Device CompatibilityThe NC-8 is compatible with all computers and laptops that have standard dual 3.5mm microphone and speaker jacks (Pink and Green). Please note that the microphone plug uses the pink jack only for clear voice input. TRRS Adapter CompatibilityFor newer devices with a TRRS shared audio port (such as certain computers, laptops, or tablets), you'll need the optional C-100 Adapter. This adapter converts the 3-pin pink microphone plug to a TRRS shared audio 4-pin plug for seamless connectivity. USB Adapter SupportThe NC-8 is also compatible with any of Andrea's USB adapters, including the USB-SA, USB-MA, EDU-USB, and USB-UNIV, making it versatile for a wide range of devices and setups. Why Choose the NC-8? Perfect for Noisy Environments: Noise-canceling technology ensures that your voice is heard clearly, even in the loudest spaces. Award-Winning Performance: The 6 Dragon rating for speech recognition guarantees top-notch performance for dictation and voice applications. Comfortable for All-Day Use: Its lightweight, head-mounted design allows you to enjoy long periods of use without discomfort. Highly Adjustable: The flexible microphone boom provides a customizable fit, ensuring optimum voice input. For superior speech recognition, clear voice input, and comfortable wear, the Andrea Communications NC-8 Ultralight Head-Mounted Noise-Canceling Microphone is the ideal choice for both professionals and casual users. Upgrade your communication setup and experience the difference in clarity and accuracy today!

Perfect for classroom audio setups and shared listening stations, this 6‑inch Y‑adapter cable splits a single 3.5 mm stereo male plug into two 3.5 mm stereo female jacks — allowing two students or devices to connect from one audio source with minimal clutter. Why classrooms like this adapter cable Short 6‑inch length keeps cords tidy and reduces tangling in media carts or desktop setups Cost‑effective way to share one audio output between two headphones or speakers Durable molded strain relief and flexible PVC jacket designed for frequent student use and mobility Nickel‑plated connectors ensure reliable signal and reduce corrosion over time in high‑use environments Compatibility This adapter is ideal for classroom and lab use: plug the single 3.5 mm male end into a desktop, laptop, Chromebook (with audio jack), tablet (with 3.5mm), or media cart audio output — then connect two sets of headphones, earbuds, or speakers via the dual female ports. No driver installation or software needed. Care & Hygiene Due to frequent shared usage, wipe the male plug and female jacks with school‑approved disinfectant wipes between sessions. Store the adapter in a labelled bin or audio accessory pouch. Avoid placing it under heavy equipment or kinking the short cable to maintain signal integrity. Tech specs Connector Type 1: Stereo 3.5 mm mini male jack Connector Type 2: Two stereo 3.5 mm mini female jacks Connector Finish: Nickel‑plated Cable Length: 6 inches (≈152 mm) Jacket: Xtra‑Flex PVC in mist black Gauge: 22 AWG with bare copper center conductor Shell Rating: RoHS compliant Model / SKU: MP‑2MJ‑CS (as listed)

Wireless Headphone Transmitter – Blue is ideal for classrooms, libraries, language labs, and ELL/ELD settings. Operating at **72.1 MHz**, it delivers wireless audio across a **100′ range** to unlimited compatible headphones—perfect for group listening. Key Features & Use Transmits on color‑coded **blue / 72.1 MHz** frequency for grouping without interference Supports **unlimited listeners** on the same frequency Includes ¼″ audio input (for media sources) and ¼″ mic input (teacher voice) Transmit range: up to 100′ in open space Comes with a **2‑year warranty** for educational use Selectable among three VHF/FM frequencies for parallel groups in same room without crossover Technical Specification Highlights SKU: CLS725‑T Color: Blue Operating Frequency: 72.1 MHz Range: 100′ (30 meters) Inputs: ¼″ audio + ¼″ mic jacks

Wireless Headphone Transmitter — Yellow is a classroom‑ready wireless audio transmitter built for group learning. With a **100′ transmission range**, it allows multiple students to connect wirelessly using headphones matched to the yellow, 72.100 MHz frequency. Key Features & Benefits Color-coded **Yellow / 72.100 MHz** channel reduces crossover in shared spaces Up to 100 ft of wireless coverage for whole-class listening No limit to the number of headphones — all must match the yellow channel Plug-and-play: supports compatible media players, mics, and audio sources 2‑year educational warranty ensures confidence in use Specifications SKU: CLS721‑T Color: Yellow Operating Frequency: 72.100 MHz (yellow band) Range: up to 100′ open space Warranty: 2 years (school / institutional use) Usage Tips Ensure headphones used match the yellow 72.100 MHz frequency to connect properly. Position transmitter elevated with clear line-of-sight to maximize range. Keep away from metal obstructions and other transmitters to reduce interference.

Califone CLS Series AC Adapter Adapters are a convenient accessory for educators to have on hand, allowing them to increase the compatibility of their CLS Series headphones and classroom headsets.With the use of more devices, the adapter allows for increased flexibility in listening options. More compatibility means more versatility which enhances learning opportunities for students.The Califone CLS Series AC Adapter converts the existing plug to a compatible AC plug, allowing for the use of more devices. Califone AC Charging Adapter is designed for use with Califone Wireless Listening Systems.Features: Designed for use with CLS Series products Provides AC plug connection  *We accept purchase orders and provide discounts on bulk or more quantity orders. We also offer free shipping for orders that totals $200 or more.