In depth comparison and review of Poly Blackwire 325 and Belkin SoundForm Inspire. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - Bluetooth - wireless, wired - 3.5 mm jack | |
|---|---|---|---|
| Series | 300 Series | - | |
| Height | - | 18.5 cm | |
| Width | - | 16.8 cm | |
| Depth | - | 7.4 cm | |
| Weight | - | 180.5 g | |
| Colour | - | Lavander | Black | |
| Body Material | - | 72% post-consumer recycled plastic | |
| Earpad Material | - | Polyurethane leather | |
| Headband Material | Metal | - | |
| Design | - | Kids | |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Adjustable Headband | - | Yes | |
| Foldable | - | Yes | Belkin SoundForm Inspire can be folded. |
| Connectivity Technology | Wired | Wireless, wired | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.2 | |
| Volume Limiting Function | - | Yes | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | Signature Sound | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Max Sound Pressure | - | 85 dB | |
| Diaphragm | - | 40 mm | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Type | Boom | Boom | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Controls | Mute, volume, answer/end | Mute, volume |
|---|
| CABLE | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Cable Type | Headset cable - 2.13 m | USB-C cable - detachable Audio cable - detachable |
|
|---|---|---|---|
| Cable Length | 2.13 m | - |
| FEATURES | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Features | - | Mute LED indicator, fast charge, RockStar mode | |
|---|---|---|---|
| Additional Functions | DSP | - |
| BATTERY AND CHARGING | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 35 hour(s) | |
| Battery Life Details | - | Continuous playback: up to 35 hours |
| CONNECTIONS | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Poly Blackwire 325 | Belkin SoundForm Inspire |
|---|
| Included Accessories | - | USB-C cable, 3.5 mm audio cable | |
|---|---|---|---|
| Compatibility | - | iPhone, iPad, Android phone, Mac, Windows, Android tablet | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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