Adapters & Connectivity

The Fishbone TRRS Adapter is AVID’s innovative answer to pin breakage issues in audio devices. Designed with a flexible, ribbed “spine,” it bends and rotates in reaction to strain, allowing the adapter plug to slip free instead of damaging internal jacks. This helps reduce tech downtime and extends device life in school settings. How It Works Inspired by a swimming fish’s motion, the Fishbone flexes laterally across its ribs while twisting inside a jack. When pressure is applied (e.g., a student yanks a cord), the adapter disengages before bending or shearing the device’s internal pin contact. It’s a targeted, low‑cost solution for reducing hardware failures in classroom audio setups. Key Benefits Protects expensive audio devices from pin damage Flexible “breakaway” design reduces repair costs and downtime Rotates in the jack to align with pull direction Simple, compact, low‑cost add-on accessory Complies with CPSIA & TPCH safety regulations Usage & Installation Plug Fishbone adapter into device’s TRRS jack before connecting your TRRS headphone cable. Ensure a snug fit — it should seat fully without wobble. Ideal for student environments where cords may get pulled or tripped over. If repeatedly dislodged, inspect for bent plugs or misalignment. Care & Quality Each Fishbone adapter undergoes a QA inspection before shipping. Avoid excessive twisting or bending beyond normal usage. Complies with applicable CPSIA and TPCH regulations for safety. :contentReference[oaicite:0]{index=0}

Using the wrong cable to attach your microphone & headphones to your computer can produce strange results.The LH-310 TRRS Adapter for Headsets is easy to convert a single plug headset to a dual plug headset. Designed for education Use with computers that have 2 separate jacks, One is used for the headphone & the other is used for the microphoneConverting a single plug headset to a dual plug has never been easier! A TRRS Adapter allows you to use a single plug headset with two separate jacks. The unique design of this adapter allows you to easily convert a single plug headset into a dual plug headset. A quick, easy and reliable solution.Features: A quick, easy and reliable solution. allows to easily convert a single plug headset into a dual plug headset.  *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.

The Sack-O-Phones 5‑Pack SC‑7V Deluxe Headphones bundle from Hamilton Buhl gives schools a cost-effective, hygienic way to deploy over‑ear headphones. Each unit comes with volume control, leatherette cushions, and a reclosable storage bag to help prevent head-lice spread. Why classrooms like the SC‑7V bundle Each headphone includes on‑ear volume control and leatherette earpads for comfort Automatic stereo / mono switching—no need to flip switches between equipment types Individual reclosable, moisture-resistant storage bags kill lice in 24–48 hours without chemicals Bundle includes a carry bag to keep the set together in classrooms or carts Compatibility & Use Uses standard 3.5 mm (1/8") jack and includes a screw-on ¼" adapter. Works with tablets, Chromebooks, computers, audio players, and more. Tech specs Driver size: 57 mm ferrite beads Frequency response: 20 Hz – 20 kHz Impedance: 32 Ω Adapter: ¼" screw-on included Weight: approximately 9 oz each Warranty: 1 year

This Pack of 50 Personal Economic Headphones feature 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. The personal economical headphones are ideal for classrooms, learning centers, computer labs, and libraries. Designed with maximum functionality and affordability in mind, these durable yet affordable headphones are ideal for use with tablets, mobile devices, computers, MP3 Players, CD Players, and much more. Optional Accessories (not included): 5076 - Refresh kit includes a replacement reclosable storage bag and two new ear cushions HygenX25 - Disposable sanitary ear cushion covers (Box of 50 Pair) Specifications: Foam Ear Cushions, Replaceable Personal, On-Ear Design Stereo Headphone Impedance: 170 Ohms Frequency response: 18-20k Hz Speaker drivers: 40mm Cobalt magnet Weight: 5 Ounces 60-Day warranty 1/8 inch plug Cord: 6 feet Compatible with most: MP3 Players Cell Phones/Handheld Mobile devices Tablets / eReaders Computers (Mac & PC) CD Players / Stereos

The EDU-USB External USB Headset Adapter is designed to provide high-quality audio for educational environments. By bypassing your computer's built-in sound card, it delivers clear, low-noise audio ideal for students and educators alike. Pick the right connector This adapter is perfect for devices with USB ports, offering a simple plug-and-play solution without the need for additional drivers. Why classrooms like EDU-USB Improved Audio Quality: Delivers CD-quality digital sample rates for clear sound. Plug-and-Play Setup: No drivers needed; just plug into any USB port. Compact Design: Small form factor for easy portability and storage. Broad Compatibility: Works with all current Andrea Communications headsets and microphones, as well as any legacy peripherals. Durability: Built to withstand the rigors of classroom use. Compatibility Windows: XP, Vista, 7, 8, 8.1, 10 Mac: OS X 10.5 and up Care & Hygiene Keep the adapter clean by wiping it with a dry cloth. Avoid exposure to liquids and store in a cool, dry place when not in use. Tech specs Type: External USB audio adapter Audio Quality: CD-quality digital sample rates Connectors: Color-coded jacks for easy connection Indicators: Power On/Data and Transmit LED indicators Compatibility: Works with all current Andrea Communications headsets and microphones, as well as any legacy peripherals

One Adapter, Countless Classroom Uses The USB-C to 3.5mm Headset Adapter makes single-plug TRRS (CTIA) headsets—with microphones—work on USB-C devices. It reliably converts digital↔analog audio for clear playback and voice capture, so students can join assessments, language labs, and read-alouds without changing headsets. Why schools choose it Mic-capable TRRS (CTIA): Supports headsets with a single 3.5mm plug (audio + mic), not just audio-only earbuds. Clear voice pickup: High-quality A/D conversion helps speech sound accurate for apps and recordings. In-line control support: Android: Play/Pause + Vol Up/Down; Apple (USB-C): Play/Pause.* Fleet-friendly: Standardize rooms that moved from 3.5mm to USB-C—no need to rebuy headsets. Classroom-durable: Short, braided tail helps reduce strain at the device port. *Exact button behavior can vary by device/app. Compatibility Devices: Chromebooks, laptops, and tablets with USB-C ports (including many iPads). Headsets: Single-plug 3.5mm TRRS (CTIA) headsets with microphones. OS: Windows 10/11, Android, and most Apple devices with USB-C ports. Fast setup Plug the adapter into the device’s USB-C port. Connect the single-plug TRRS headset. Select the adapter as both Input and Output in the OS/app. Run a 10-second mic test (watch the input meter). Troubleshooting tips No mic input: Grant mic permission to the app; reselect the adapter as the input device. One-ear audio: Fully seat the 3.5mm plug; confirm CTIA wiring; try another port. Inline buttons not working: Behavior varies by OS/app; Play/Pause is most universal. Specifications Plug type: Single 3.5mm TRS/TRRS to USB-C Cord: 4.5 cm nylon braid (short tail) Package: Polybag Compliances: CA Prop 65, CPSIA, TSCA, SOR 2014 (Canada), RoHS, REACH SVHC/Annex XVII, POPS, SCCPs & HBCDD, SPL EN 50332-2, ICES-003 (Canada), CE-EMC, FCC-SDOC Minimum Order: 20 Related accessories TRRS school headsets USB-C headsets Replacement earpads Device-safe cleaners

This Pack of 160 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.  The HamiltonBuhl® PER/160 is a bulk pack of 160 super-affordable personal educational headphones. Designed with maximum functionality and affordability in mind, these durable, yet affordable headphones are ideal for use with tablets, mobile devices, computers, MP3 Players, CD Players and much more. They are not just a great buy, but are easy to wear and lightweight with foam ear cushions.  Optional Accessories (not included): 5076 - Refresh kit includes a replacement reclosable storage bag and two new ear cushions HygenX25 - Disposable sanitary ear cushion covers (Box of 50 Pair) Specifications: Foam Ear Cushions, Replaceable Personal, On-Ear Design Stereo Headphone Impedance: 170 Ohms Frequency response: 18-20k Hz Speaker drivers: 40mm Cobalt magnet Weight: 5 Ounces 60-Day warranty Cord: 6 feet 1/8 inch plug Compatible with most: MP3 Players Cell Phones/Handheld Mobile devices Tablets / eReaders Computers (Mac & PC) CD Players / Stereos

This 3.5mm Stereo Jack to 3.5mm Mono Plug Adapter makes it easy to connect stereo headphones or devices to mono-only audio sources, often found in older classroom equipment or language labs. It provides an affordable, plug-and-play solution that helps avoid sound issues and extends the life of your existing audio gear. Why classrooms use this adapter Adapts stereo plugs to mono jacks — no extra equipment needed Reduces compatibility issues during testing or group listening Durable, lightweight, and easy for students to use Ideal for assistive listening systems or older media players Compatibility Use with 3.5mm stereo headphones and devices Works with mono-only classroom tech, including listening centers and test stations Care & Storage Keep in a labeled bag or pouch when not in use Wipe gently with a dry cloth if dust builds up We accept purchase orders Tax-exempt schools and districts can buy via PO or request a quote. Quantity discounts available for bulk purchases. Quality assurance Every adapter is backed by our commitment to quality and classroom-friendly service. Need help finding the right connection? Contact us.

Some of the headphones do not have any volume control, but we all want the convenience of adjusting the level of our headphone's volume. The Volume control adaptor enables you to enjoy listening or talking with your earphone without having to remove it when you need to adjust its volume or switch songs. The Volume Control Adaptor is designed for PC Headphones without volume controls. It gives you the option of adjusting the volume of your headphones by turning the little dial on the side of your computer. The volume control adaptor is perfect for language learning, listening programs, etc. Features: Adjust the volume on existing headphones with a standard 3.5mm connection Plugs directly into cord for easy volume adjustment Gives each student ability to select the comfortable volume level Plug and Play No Software Required Designed for School Headphones One Year Warranty

The QZ99 Passive Noise Reduction headphones sport neodymium magnet structures that deliver outstanding clarity and definition. The closed Pneumalite™ ear cushions and extra-secure headband create a tight seal around the ear eliminating all ambient noise. Durable and built to withstand the rigors of indoor and outdoor use, the Koss QZ99 also includes a volume control on the ear cup that makes adjusting sound levels a snap, and a stereo/mono switch that extends user flexibility. Sporty and strong with superior sound quality, these Passive Noise Reduction headphones are every audiophile's dream. Features: Passive Noise Reduction technology for excellent isolation Over-the-head, extra-secure headband design Volume control on ear cup Includes 8 foot, coiled, single-entry cord Compatible with most radios and scanners Koss Limited Lifetime Warranty Specifications: Neodymium magnet structures deliver outstanding clarity and definition Closed Pneumalite™ ear cushions and extra-secure headband seal ears, eliminate all ambient noise Volume control on ear cup allows easy level adjustment Stereo/mono switch extends user flexibility Includes 8 foot, coiled, single-entry cord with 3.5 mm plug and 6.3 mm adapter Covered under the Koss Stereophones Limited Lifetime Warranty

Headphone Adapter – 3.5 mm to ¼″ Snap‑On for Hamilton Headphones lets you convert your standard 3.5 mm plug into a ¼″ connection easily. No tools, no hassle — just snap on and go. Why Classrooms Appreciate This Adapter Snap-on design — instant conversion without removing plugs or fiddling Works across many HamiltonBuhl models — adds flexibility to existing gear Compact and durable — ideal for school environments Affordable add-on that extends the versatility of your headsets Compatibility & Use Designed to fit HamiltonBuhl® headphone 3.5 mm plugs Converts to ¼″ (6.35 mm) for compatibility with amplifiers, audio stations, and pro gear Snap-on design — no tools needed Product Specs Dimensions: 1″ × 2″ × 1″ (25.4 × 50.8 × 25.4 mm) Material: Durable metal & plastic construction Compatibility: HamiltonBuhl models HA‑1A, HA2, HA2V, HA7, KIDS‑HA2, MS2L, MS2LV, SC‑7V, KIDS‑SC7V SKU: 5072

HamiltonBuhl 5-Position Portable Starfish JackboxThis affordable, HamiltonBuhl 5-Position Portable Starfish Jackbox lets you connect up to five participants to a single audio output—perfect for classrooms, labs, and listening centers. Integrated volume control means users can adjust their own level for comfortable listening.How It WorksSimply plug the **Starfish Jackbox** into any device with a 3.5 mm output—CD player, tablet, MP3, computer, etc.—and connect up to five headphones. Need more capacity? Two jackboxes can be chained together to support 9 listeners total.Specifications Audio Input: 3.5 mm (1/8″) Outputs: 5 × 3.5 mm (1/8″) sockets Output Power: ~100 mW per channel Cord length: approx. 3″ Color: Black Warranty: 1 year We accept POs and offer volume pricing for schools and institutions. Free shipping on 48 contiguous U.S. orders. Every product passes through a quality assurance check.

The USB-SA Premium External USB Stereo Sound Card is an easy and affordable way to convert analog audio headsets to USB connectivity. Ideal for school labs, classrooms, and shared computer carts, this compact plug-and-play adapter delivers reliable performance and consistent audio quality with minimal setup. Why classrooms like the USB-SA Converts 3.5mm TRRS plug to USB-A for wider compatibility Simple plug-and-play—no drivers needed Compact size fits neatly in classroom tech bins Durable construction with reinforced strain relief Helps extend the life of existing headsets Compatibility Works with any 3.5mm TRRS headset with a combined mic/headphone plug. Compatible with Chromebooks, laptops, and desktops that accept USB-A audio input/output. No software required. Care & Hygiene Wipe with a soft dry cloth or disinfectant wipe between uses. Ideal for shared devices in classrooms and labs. Avoid liquid cleaners or submersion. Tech specs Input: 3.5mm TRRS jack Output: USB-A male plug Dimensions: 1.9" x 0.9" x 0.5" Cable length: 4.5 inches Plug-and-play (no drivers required) Color: Black

The USB‑MA Premium External USB Microphone Adapter boosts audio quality by converting analog stereo mic input into USB. Perfect for classrooms, language labs, and shared computer setups. Why classrooms like the USB‑MA Converts stereo mic input (3.5 mm) to USB—improves clarity Bypasses low‑quality internal mic circuits Plug‑and‑play—no driver installation needed Compact and durable—fits neatly in tech carts Ideal to extend old mic headsets without replacing device Compatibility Compatible with any standard 3.5 mm stereo microphone input. Works on Windows and Mac without drivers. Ideal for classrooms, labs, and shared computer stations. Care & Hygiene Clean with a soft cloth or disinfectant wipe between uses. Avoid liquids and never submerge. Helps maintain hygiene for shared devices. Tech specs Input: 3.5 mm stereo microphone jack Output: USB‑A male plug Dimensions: ~1.9" × 0.9" × 0.5" Cable length: ~4.5 inches Plug‑and‑play, no drivers required Color: Black

The Standard Phone (1‑4") Plug to 3.5 mm Mini‑Jack Audio Adapter lets you convert classic 1/4" (or 1‑4") plugs into a standard 3.5 mm stereo jack—perfect for mixing older audio gear with modern devices. Why classrooms like this adapter Enables 1/4" stereo plugs to connect to devices with 3.5 mm jacks Compact and lightweight—easy to include in tech kits or student use cases Plug‑and‑play—no power or drivers needed Built durable for frequent classroom use Features Connector: 1/4" (1‑4") stereo male Connector: 3.5 mm stereo female (mini jack) Plug‑and‑play—no additional hardware or drivers required Quality Assurance Every unit undergoes our standard QA check before shipment to ensure performance and reliability.

You or the teacher is trying to hook up a decent set of stereo headphones and your computer doesn’t have the correct 3.5mm jack. The Hamilton Buhl 6” Stereo 3.5mm Plug to 2 Standard 1/4" Phone Jacks Audio Adapter Cable manufactured by Comprehensive is an excellent solution for eliminating this problem. Made from top-quality components, this cable is built to last while delivering superior audio quality in any application. The 6" adapter cable will allow you to connect your mono or stereo headset with a 3.5mm plug directly into these devices that require standard phone jacks (1/4"). The Hamilton Buhl 6” Stereo 3.5mm Plug to 2 Standard 1/4" Phone Jacks Audio Adapter Cable manufactured by Comprehensive is designed for use with any headsets that feature a standard 1/4" phone jack. Features: • Exceptional Value • Comprehensive Reliability • Perfect for everyday use • Molded strain relief • Lifetime Warranty Specifications: Connector 1: 1 x 1/8" (3.5 mm) TRS Male Straight Connector 2:  2 x 1/4" TRS Female Straight Cable Length:  6" / 15.24 cm