Koss - KDE250 Over-The-Ear Mount Headphones - Black
Price range: $249.99
Brand: Koss
Category: Audio
A pair of Koss wired headphones featuring 20 mm drivers, 40 Hz–20 kHz frequency response, and 16Ω impedance.
PQS: 90 (computed 2026-03-14 07:04:46.475283+00:00)
GTIN-14: 00021299163023
Key specs
A human-friendly subset of specs (non-null)
Driver
20 millimeters
Frequency response
40 hertz - 20 kilohertz
Impedance (ohms)
16
Wireless (BT/WiFi)
Wired
Offers
| Retailer | SKU | Price | Stock | Offer | Last seen |
|---|---|---|---|---|---|
| Best Buy | 9478576 | 249.99 USD | Out of stock | View offer → | 2026-03-15 05:17:39.439538+00:00 |
Recent price history (50)
| Retailer | Price | Stock | Seen at |
|---|---|---|---|
| bestbuy | 249.99 USD | Out of stock | 2026-03-15 05:17:39.439538+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-14 05:22:16.989010+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-13 05:32:03.339390+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-12 05:19:43.832492+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-11 05:16:41.799680+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-10 05:27:13.023350+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-09 05:27:28.215441+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-06 07:31:13.471924+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-03 03:20:25.821186+00:00 |
| bestbuy | 249.99 USD | Out of stock | 2026-03-02 10:36:56.147136+00:00 |
Full specs
Show full spec table
| Driver | 20 millimeters |
|---|---|
| Frequency response | 40 hertz - 20 kilohertz |
| Impedance (ohms) | 16 |
| Wireless (BT/WiFi) | Wired |
| Reconciled at | 2026-03-06 05:26:31.594678+00:00 |
Canonical JSON (expand)
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Related products
Simple similarity over extracted specs (publish_set only)
Debug data (expand)
| Raw title | Koss - KDE250 Over-The-Ear Mount Headphones - Black |
|---|---|
| Raw brand | Koss |
| Raw category | Best Buy > Headphones > All Headphones |
Canonical highlights (non-null)
| core.title | Koss - KDE250 Over-The-Ear Mount Headphones - Black |
|---|---|
| audio.driver | 20 millimeters |
| audio.wireless | Wired |
| audio.impedance_ohms | 16 |
| audio.frequency_response | 40 hertz - 20 kilohertz |
| brand | Koss |
| model | KDE250 |
| gtin14 | 00021299163023 |
| category | audio |
| schema_version | 1 |
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
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"value": "95 decibels adjusted",
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"value": "20 millimeters",
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{
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"value": "3.9 feet",
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"features": [
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"feature": "Over-the-ear design\nFor a secure fit."
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"feature": "20mm drivers\nDeliver powerful sound."
},
{
"feature": "40Hz - 20kHz frequency response\nFor faithful sound reproduction."
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{
"feature": "16 ohms impedance\nTo efficiently conduct power."
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"longDescription": "Experience high-fidelity sound with these Koss headphones. Three sets of ear clips and the ability to customize fit with an adjustable height dial ensure comfort during listening sessions, and side-firing elements deliver clear audio to each ear. Keep up with the latest podcasts or rock your way through a workout with these Koss headphones.",
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Newegg raw specs
No Newegg raw specs saved for this product yet.