If you want a wired stereo headset with flexible USB connections and call-focused microphone features for Zoom calls, choose Hewlett Poly Blackwire 3325; if you need a simpler mono headset with USB-C and 3.5 mm connectivity, choose PLT HP. The Blackwire 3325 is the more fully specified choice for work calls, while the Blackwire 3315 listing leaves more unanswered about its call features.
Hewlett Poly Blackwire 3325 vs PLT HP at a Glance
• Hewlett Poly Blackwire 3325: Stereo sound, a 7-foot cable, USB-C and USB-A options, and a noise-canceling boom microphone; the trade-off is that it is wired and uses an on-ear, binaural design.
• PLT HP Blackwire 3315: Mono audio with USB-C and a 3.5 mm connection; the trade-off is that the available product details say much less about microphone and call-processing features.
• Pick the Blackwire 3325 if you want a more extensively specified headset for calls, with stereo listening and multiple connection options.
• Pick the PLT HP if mono audio and a straightforward wired connection better fit your needs, and you do not require the extra call features listed for the 3325.
The Hewlett Poly Blackwire 3325 is the stronger match for someone who wants one wired headset to handle work calls and everyday computer audio. Its stereo, binaural design sends sound to both ears, which can make it easier to focus on a conversation or switch between calls and multimedia. The stated frequency range is 20 Hz to 20 kHz, and its 32-ohm impedance is described as compatible with a range of devices.
Its connection options are a practical advantage. The headset supports USB-C and USB-A through an adapter, and it also has a 3.5 mm connection. That gives you more ways to connect than a USB-C-only setup, though you will still need to choose a connection that matches your device. The 7-foot cable offers room to shift position at a desk without making this a wireless headset. For someone moving between a laptop and another compatible device at a workspace, that mix of wired options may be useful.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-22 · 7 min read · Independent comparison
Who should skip it: Skip the Blackwire 3325 if you specifically want true wireless earbuds for Zoom calls, or if you do not want an on-ear wired headset and its cable.
PLT HP’s product is identified as the Poly Blackwire 3315, a wired, on-ear headset with mono audio and USB-C and 3.5 mm connectivity. That may suit a buyer who prefers a single-channel listening setup and wants a headset that can connect through one of those wired options. Its listed frequency range is 20 Hz to 20,000 Hz, and its listed driver type is dynamic. Those figures describe the audio range and driver category, but they do not tell us how the 3315 will sound in a particular room or on a particular call.
The product details also specify touch controls and active noise cancellation. The listing does not explain which controls are touch-operated or how the noise-control feature behaves, so I would avoid assuming more than those labels establish. Likewise, while the product title identifies Microsoft Teams certification, the available information does not give the same call-processing detail as the Blackwire 3325 listing. For a buyer focused on calls, that difference in how much is specified matters: it is harder to compare microphone behavior or call clarity from the provided details alone.
The 3315 may appeal to someone who wants a simpler mono headset with USB-C and a 3.5 mm jack, rather than stereo playback and the 3325’s stated suite of call technologies. Its on-ear placement is shared with the 3325, but its mono configuration is an important distinction. If you listen to multimedia as well as calls, consider whether you actually want sound in both ears before choosing this model.
Who should skip it: Skip the PLT HP if stereo audio, a 7-foot cable, USB-A support, or explicitly listed boom-microphone features are priorities.
Side-by-Side: Which Should You Choose?
• Best for stereo sound → Hewlett Poly Blackwire 3325. It is specified as stereo and binaural; the PLT HP is listed as mono.
• Best for USB-A flexibility → Hewlett Poly Blackwire 3325. It supports USB-C and USB-A through an adapter, as well as a 3.5 mm connection.
• Best if USB-C and 3.5 mm are the connections you need → PLT HP. Those are the connections stated for the Blackwire 3315.
• Best for clearly specified call features → Hewlett Poly Blackwire 3325. The listing identifies a noise-canceling boom microphone, echo reduction, and several audio-processing technologies.
• Best if you prefer mono audio → PLT HP. Its mono configuration may suit a call-focused listener who does not want stereo sound.
• Best for Microsoft Teams users seeking explicit model details → Hewlett Poly Blackwire 3325. Both product titles identify Teams certification, but the 3325 also specifies plug-and-play USB use and call-focused features.
Before choosing, check the ports on the computer or other device you plan to use. The Blackwire 3325 offers USB-C and USB-A through an adapter, plus a 3.5 mm connection. The PLT HP listing specifies USB-C and a 3.5 mm jack. These are wired headsets, so neither is a wireless option; a long cable may help at a desk, but it will not provide the freedom of Bluetooth.
Think about listening style, too. Stereo sound can be useful if you want audio in both ears for meetings and multimedia. Mono may be preferable if you want a single-channel headset. The data does not establish which configuration is more comfortable for you, so personal fit and preference remain important.
The two listings also differ in how much they tell you about voice transmission. The Blackwire 3325 has a rotating boom microphone and several named call-processing features. The PLT HP listing mentions touch controls and active noise cancellation but does not give comparable microphone details. If your decision is mainly about frequent calls, that gap makes the 3325 easier to assess from the information available. For a current price comparison, check the current price on Amazon using the page’s button.
My Verdict
For a buyer who wants stereo sound and explicitly listed call features, I’d choose the Blackwire 3325. The PLT HP is mono, and its available details provide less information about its microphone and call processing.
The Blackwire 3325 is listed with USB-C and USB-A connectivity through an adapter, along with a 3.5 mm connection. Check that the connection you plan to use matches your device.
The PLT HP product title identifies the Blackwire 3315 as mono. The Blackwire 3325, by contrast, is specified as stereo and binaural.
No wireless connection is listed for either headset. Both are described with wired connections, so shoppers looking specifically for clip on earbuds for Zoom calls or usb c charging sleep headphones for Zoom calls should look for a different type of product.
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