First Impressions and Unboxing
The StreamQ C4 arrives in minimalist packaging that belies the quality within. Opening the box reveals the headphones nestled securely inside, along with a USB-C charging cable, 3.5mm audio cable for wired connections, and a concise user manual. While there’s no carrying case included—somewhat expected at this price point—the foldable design helps compensate for this omission.
The headphones immediately impress with their clean aesthetic. Available in either black or sand colorways, they feature a modern design that doesn’t scream “budget.” The matte finish provides a premium feel that resists fingerprints admirably, while the subtle MIXX branding on the earcups adds a touch of sophistication without being ostentatious.
Design and Build Quality
For headphones priced at £50/$50, the StreamQ C4 delivers surprisingly solid construction. The frame is primarily plastic, which keeps the weight manageable for extended listening sessions. Despite the plastic construction, there’s minimal creaking when handling the headphones, suggesting decent build quality.
The adjustable headband offers enough flexibility to accommodate various head sizes, with satisfying clicks as you adjust the fit. The ear cups swivel and fold inward for compact storage, making these headphones reasonably portable despite the lack of a carrying case. The cushioning on both the headband and ear cups is adequately plush, wrapped in a soft leatherette material that feels comfortable against the skin.
All controls are conveniently located on the right ear cup, with physical buttons that provide tactile feedback—a welcome alternative to sometimes finicky touch controls. The button layout is intuitive: power/Bluetooth pairing, volume up/down, and a multi-function button for playback control and call management. There’s also a dedicated ANC button that toggles between noise cancellation, transparency mode, and standard listening modes.
Comfort and Fit
Comfort is paramount for over-ear headphones, and the StreamQ C4 performs admirably in this category. The ear cups create a gentle seal around the ears without applying excessive pressure, and the padding strikes a good balance between softness and support. At 260 grams, they’re lightweight enough for extended wear, though some minor hotspots may develop after 3-4 hours of continuous use—not uncommon even in more expensive models.
The headband distributes weight evenly across the top of the head, preventing the “hot spot” discomfort that plagues many budget headphones. For those who wear glasses, the ear cup pressure is gentle enough to avoid causing discomfort where the frames meet the sides of your head—a thoughtful design element often overlooked in this price range.
Connectivity and Controls
The StreamQ C4 utilizes Bluetooth 5.0, offering stable connectivity up to the standard 10-meter range. Pairing is straightforward: hold the power button for a few seconds until the LED indicator flashes blue/red, then select the headphones from your device’s Bluetooth menu. Once paired, they connect automatically to the last paired device upon powering on.
The physical button controls are refreshingly simple to operate. A short press on the multi-function button plays/pauses music or answers/ends calls, while a double press skips to the next track, and a triple press returns to the previous track. Volume is adjusted with dedicated up/down buttons, and the ANC button cycles through the three listening modes. These tactile controls work reliably even with gloves on—a small but appreciable detail during colder months.
What’s missing is a companion app for customization options like EQ adjustments or firmware updates. While this is common for headphones in this price range, it does limit the ability to tailor the sound profile to individual preferences.
Sound Quality
For £50/$50 headphones, the StreamQ C4 delivers a surprisingly competent sound signature. The audio profile leans toward a consumer-friendly sound with emphasized bass that doesn’t overwhelm the mids and highs. The bass response is punchy and satisfying for genres like hip-hop, EDM, and modern pop, though bass purists might find it lacks the definition and control of higher-end models.
The midrange is where budget headphones typically struggle, but the StreamQ C4 manages to present vocals and instruments with reasonable clarity. There’s a slight recession in the upper mids that can make some female vocals sound a bit distant, but it’s not severe enough to detract significantly from the overall listening experience.
The high frequencies are adequately detailed without becoming harsh or sibilant, though they lack the sparkle and airiness found in premium headphones. Cymbals and hi-hats have enough presence to be heard clearly but don’t quite capture the full harmonic texture of these instruments.
Soundstage is predictably modest—these are closed-back headphones after all—but there’s enough separation between instruments to prevent the music from sounding congested. For casual listening, the StreamQ C4 provides an enjoyable, accessible sound signature that works well across most music genres, podcasts, and video content.
Active Noise Cancellation
The headline feature of the StreamQ C4 is, of course, its active noise cancellation (ANC). At this price point, expectations should be managed—these headphones won’t compete with the likes of Sony or Bose in noise-cancelling effectiveness. That said, the ANC performance is impressive for the cost.
The StreamQ C4’s noise cancellation does a commendable job with low-frequency, consistent sounds like air conditioners, airplane cabin noise, and the rumble of public transportation. It reduces these sounds by approximately 70-80%, making them far less intrusive. Mid-range noises like office chatter and keyboard clicks are moderately attenuated, while high-frequency sounds like clinking dishes or high-pitched voices still penetrate the barrier.
What’s particularly noteworthy is that activating ANC doesn’t significantly alter the sound signature—a common issue with budget ANC headphones. There’s a very slight increase in bass response and a minimal hiss when ANC is engaged, but it’s not distracting during music playback.
The transparency mode (MIXX calls this “Transparent Mode”) works effectively, allowing ambient sounds to pass through clearly when you need environmental awareness. This feature is particularly useful for brief conversations or when you need to hear announcements without removing your headphones. The implementation isn’t as natural-sounding as premium models, but it’s functional and convenient.
Battery Life and Charging
MIXX claims an impressive 40 hours of battery life for the StreamQ C4, and real-world testing largely supports this claim—with a caveat. With ANC turned off at moderate volume levels (around 60-70%), the headphones consistently achieved 38-42 hours of playback time. With ANC engaged, this drops to approximately 28-30 hours—still excellent for headphones in this price bracket.
One of the standout features is the quick-charge capability. A mere 15-minute charge provides approximately 8 hours of playback time, making these headphones exceptionally convenient for those last-minute charging situations before commutes or flights. A full charge from empty takes about 2 hours via the included USB-C cable.
The headphones also feature intelligent battery conservation, automatically powering off after 10 minutes of inactivity to preserve battery life. A voice prompt announces when battery levels are low, giving ample warning before they power down.
Call Quality
For calls, the StreamQ C4 performs adequately in quiet environments. The microphone captures voices clearly enough for the other party to understand without issues. However, in noisier settings like busy streets or crowded cafes, the microphone struggles to isolate your voice from background noise. This is a common limitation in headphones at this price point and shouldn’t be a dealbreaker unless you frequently make calls from noisy locations.
The headphones support hands-free calling with intuitive controls—a single press of the multi-function button answers or ends calls, while a long press rejects incoming calls. During calls, the headphones automatically enter a form of transparency mode to allow you to hear your own voice naturally, preventing the closed-off sensation that can lead to unintentionally raising your voice.
Special Features
A noteworthy aspect of the StreamQ C4 is that they’re officially “Autism Approved” by the National Autistic Society. This certification suggests they’ve been evaluated for sensory comfort and usability by individuals with autism, making them a inclusive choice for neurodivergent users. While I can’t personally evaluate this aspect, it represents a thoughtful consideration in product design that deserves recognition.
The headphones also feature multipoint connectivity, allowing simultaneous connection to two devices—for example, your laptop and smartphone. This works surprisingly well; you can watch videos on your laptop and then seamlessly take a call when your phone rings without manual switching between devices.
The inclusion of a 3.5mm audio jack provides versatility when battery power runs low or when connecting to non-Bluetooth devices. The headphones work passively in wired mode even when powered off, though ANC requires battery power to function.
Durability and Longevity
After several weeks of use, including some less-than-gentle handling and packing in bags, the StreamQ C4 shows no signs of structural weakness. The hinges, often a failure point in folding headphones, appear robust. The leatherette ear cushions show minimal wear, suggesting they’ll hold up reasonably well over time—though as with all such materials, eventual peeling is inevitable with heavy use.
Without a protective case, care should be taken when transporting these headphones. The plastic construction, while solid, doesn’t inspire the same confidence as metal-reinforced models. That said, for the price point, the durability seems appropriate and should satisfy the average user’s needs.
Value Proposition
At £50/$50, the MIXX StreamQ C4 represents exceptional value for money. Consider the feature set: decent active noise cancellation, transparency mode, 40-hour battery life, quick charging, comfortable design, and acceptable sound quality. Competing headphones with similar specifications often cost twice as much or more.
For budget-conscious consumers seeking their first pair of ANC headphones, or for those needing a reliable backup pair that won’t break the bank, the StreamQ C4 makes a compelling case. They outperform their price tag in almost every aspect, though they naturally can’t match the refinement of premium models costing several times more.
Pros and Cons
Pros:
- Excellent battery life (40 hours without ANC, 30 hours with ANC)
- Impressive quick-charging capability (15 minutes for 8 hours)
- Effective ANC for the price point
- Comfortable for extended wear
- Intuitive physical controls
- Foldable design for portability
- Good value for money
- “Autism Approved” certification
- Multipoint connectivity
Cons:
- No companion app for customization
- Plastic construction may concern durability-focused users
- Midrange audio could be more detailed
- Microphone struggles in noisy environments
- No carrying case included
- Limited color options (only black and sand)
Final Verdict
The MIXX StreamQ C4 Noise Cancelling Headphones deliver far more than their modest price suggests. They successfully balance comfort, sound quality, noise cancellation, and battery life in a package that’s accessible to most budgets. While audiophiles and those seeking the absolute best noise cancellation will want to look elsewhere (and spend considerably more), the average consumer will find little to complain about here.
These headphones excel as an entry point into the world of noise-cancelling headphones or as a reliable secondary pair for travel or commuting. The thoughtful design choices—physical buttons, comfortable ear cups, foldable construction, and quick charging—demonstrate that MIXX understands what matters to consumers in everyday use.
For students, commuters, remote workers, or anyone seeking a solid audio experience without premium pricing, the StreamQ C4 deserves serious consideration. They represent what budget audio should aspire to: not attempting to compete with high-end models on every front, but instead delivering a balanced, practical experience that exceeds expectations for the price point.
The MIXX StreamQ C4 proves that effective noise cancellation and enjoyable audio don’t have to come with a three-figure price tag. In a market flooded with options, these headphones stand out as a genuine value proposition that delivers where it counts.
