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Description
Koss ED1TC Institutional Headphones3. 5mm Plug On Ear Design Durable ABS Plastic Adjustable Headband Plastic Ear Cushions For Commercial & Institutional Use The ED1TC Headphones from Koss are designed for commercial and institutional use in places such as schools, libraries, training departments, and more. It has a standard 3. 5mm plug for broad compatibility with a variety of devices and features an on ear design that reduces ambient noise. It's made from durable ABS plastic that's
- 3.5mm Plug
- On-Ear Design
- Durable ABS Plastic
- Adjustable Headband
- Plastic Ear Cushions
- For Commercial & Institutional Use
The ED1TC Headphones from Koss are designed for commercial and institutional use in places such as schools, libraries, training departments, and more. It has a standard 3.5mm plug for broad compatibility with a variety of devices and features an on-ear design that reduces ambient noise. It's made from durable ABS plastic that's easy to clean, and had an adjustable headband designed to fit most users.
UPC: 021299151402
Koss ED1TC specs
| Headphone | |
|---|---|
| Driver Size | Not Specified by Manufacturer |
| Driver Type | Not Specified by Manufacturer |
| Magnet Type | Not Specified by Manufacturer |
| Voice Coil | Not Specified by Manufacturer |
| Earpad Size | Not Specified by Manufacturer |
| Design | Over-Ear (Circumaural) |
| Earcup Style | Not Specified by Manufacturer |
| General | |
|---|---|
| Frequency Response | 100 Hz to 20 kHz |
| Sensitivity | 98 dB |
| Impedance | 32 Ohms |
| Maximum Sound Pressure Level (SPL) | Not Specified by Manufacturer |
| Maximum Power Handling | Not Specified by Manufacturer |
| Total Harmonic Distortion (THD) | Not Specified by Manufacturer |
| Contact Pressure | Not Specified by Manufacturer |
| Connectivity | |
|---|---|
| Audio Connector | 1/8" (3.5 mm) |
| Connector Plating | Not Specified by Manufacturer |
| Cable | |
|---|---|
| Design | Not Specified by Manufacturer |
| Color | Not Specified by Manufacturer |
| Detachable | Not Specified by Manufacturer |
| In-Line Remote/Microphone | Not Specified by Manufacturer |
| Type | Not Specified by Manufacturer |
| Cable Length | 3.9' / m |
| Physical | |
|---|---|
| Material of Construction | Not Specified by Manufacturer |
| Dimensions (W x H x D) | Not Specified by Manufacturer |
| Weight | Not Specified by Manufacturer |
| Packaging Info | |
|---|---|
| Package Weight | 0.25 lb |
| Box Dimensions (LxWxH) | 9.0 x 6.0 x 2.0" |
In the Box
Koss ED1TC Headphones
- Limited Lifetime Warranty
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 16 reviews
Sort
Product Reviews
★★★★★ 5
Wow!
Size: 2 Fl Oz (Pack of 1), Size: 2 Fl Oz (Pack of 1)
I only started with a half dose and I can definitely feel the mental clarity. I feel hyper focused. My energy level did not necessarily change yet, but my focus definitely did. As I work my way up to a full dose I’m sure the energy levels will change. I went straight water with it and did not notice any kind of taste. The dropper is marked with dosage so the ease-of-use is great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 9, 2025
★★★★★ 2
Leaky packaging
Size: 2 Fl Oz (Pack of 1)
Bottle leaked everywhere in package, smelled like cleaning solution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2025
★★★★★ 5
Gives a nice lift.
Size: 2 Fl Oz (Pack of 1)
Pleasant blueberry taste. As some other reviews have noted, it’s not the strongest Methylene Blue, but it does give me a gentle energylift in about 15 minutes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2025
★★★★★ 5
Has a slight citrus flavor
I like this product. It does not thicken as most fiber powders do in a glass of water. I put mine in a water bottle that I drink from throughout the day and it stays fluid.
The main point of this product is to keep you satiated after a meal and it does that for me. Right now, I would normally be eating something like a snack (which I would overindulge) and I don't even feel like it. This will take some time to get used to again as it has taken me some time to find a product like this after switching from an Amazon-suggested product that also worked until I got two bottles of it that smelled like burnt plastic and tasted nothing like an edible product. So, needless to say, I'm glad to have found this product.
In plain water and it will taste slightly citrusy. I actually accidentally drank my water before the powder fully dissolved and just ate the powder because the taste did not offend my pallet at all. So far, I have put this into my plain black coffee and water (sometimes with some juice, lime, or even lemon for flavor, but most of the time just plain water) and they taste absolutely fine.
This is not a paid review, I'm just glad to find one that didn't thicken or surprise my taste buds because I have been researching for months.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2023
★★★★★ 5
Standard high quality, works as expected
No surprises here. It mixes effortlessly into my morning drinks without altering the flavor or texture at all. It is effective, high-quality, and exactly what I expected from the Benefiber brand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
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