Acefast Crystal (2) T8 Headphones Review

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Acefast isn’t a name you hear often in the wireless earbuds market, but its latest TWS earbuds have an eye-catching transparent design, an in-case LED display, and six bold color options that caught our eye. The Acefast Crystal (2) Earbuds T8 are under review and we will take a closer look at what they offer.

Acefast Crystal (2) T8 Headphones Review

Acefast T8 certainly stands out in terms of design and offers some great accessories. They feature Bluetooth 5.3 connectivity, 10mm drivers, and support the SBS and AAC audio codecs. Battery life is up to 30 hours of use with the charging case and the whole package is IPX4 splash resistant. Let’s see how these headphones stack up against the competition, and whether they deserve a place in your pockets and ears.


Purple, Pink, Blue, Green, Black and White – these are the six colors on offer for the Acefast T8 and all of them come with transparent parts that expose the inside of the earbuds and their charging case. The charging case also has a seven-segment LED display that shows the remaining battery percentage in the case and in each earbud.

Acefast Crystal (2) T8 Headphones Review

There’s a definite inspiration from Nothing Ear (1) which brought the transparent earbud design last year, though you can actually see more of the motherboard in the Acefast T8’s charging case. The buttons are attached via magnets to the sides of the case, which is also seen on previous Acefast headphones and is certainly a way to stand out from the crowd.

Acefast Crystal (2) T8 Headphones Review

There are no buttons on the case itself and all the controls are on the buttons. The earbuds stay in place when docked in the case and I haven’t had any issues with them falling out. The in-ear fit is good as long as you select the proper silicone tip size.

The unboxing experience and the accessories provided here are a step up from ordinary wireless headphones. The box features a clear plastic piece that lifts up to reveal three compartments containing a silicone gel sleeve for the charging case color to match the earbuds, a lanyard strap, a USB-C cable for charging and three additional pairs of silicone tips housed in a plastic container.

Acefast Crystal (2) T8 Headphones Review

Each bud weighs 5.5 grams while the case comes out at 47 grams. The earbuds aren’t the lightest we’ve tested, though they feel good in the ears even after hours of use. The case isn’t quite as compact, barely fitting into the coin pockets of jeans, but it slips easily into other larger pockets, even with the included silicone sleeve.


Beyond its translucent design, the Acefast T8 offers a fairly limited feature set. There’s no Hi-Res Audio support here and you’re left with the legacy SBC and AAC audio codecs. The headphones support the latest Bluetooth 5.3 connectivity standard with Enhanced Data Rate (EDR) transmission via the BES 2600 IHC Bluetooth chip. Sadly, there’s no active noise cancellation (ANC) with the dual microphones in each ear cup only offering ENC call noise reduction.

Acefast Crystal (2) T8 Headphones Review

Multipoint pairing is another big absence from the Acefast T8 and there’s no smartphone app for adjusting audio profiles or receiving firmware updates. The headphones also bypass wear detection for pausing and resuming media playback, which is a standard feature on even today’s budget headphones.

Acefast T8 features 10mm drivers with an aluminum voice coil and 6mm dome tweeters. The headset uses a Laser Direct Structure (LDS) antenna design that molds the antenna transmitter into a plastic strip near the bottom of the headset stem. LDS is advertised to provide stable signal transmission and enhanced anti-interference.

Acefast Crystal (2) T8 Headphones Review

The LED screen on the case is a nice touch and is certainly one of the most attractive features the T8s have. The screen turns on for a few seconds when you take the buds out of the case and again when you plug them in. This is really useful as you have immediate access to your headphones and case battery status without having to dig out the Bluetooth settings on your paired device. The LED display has a white color for battery status, while the bottom has a yellow hue that illuminates the bits around the exposed part of the motherboard.

Acefast Crystal (2) T8 Headphones Review

We love the design approach, though we think Acefast could have added a physical button that lets you turn on the screen and check battery levels without inserting and removing the earbuds from the case each time.

The buttons offer tactile controls for play/pause, volume controls, call handling, and summoning your device’s digital assistant. The touch controls are all on top of the buttons and work reasonably well, although the volume controls didn’t always work on the first try. There’s no way to remap touch controls, which is a bummer.

Sound quality and performance

Once you play some audio content, you notice that the bass output is pronounced, while the bass and mids are slightly muted. The upper midrange sounds like vocals sound good. Acefast T8 can ring a lot, which is an added bonus. The audio profile is flat, and an equalizer adjustment option could potentially improve your sound output, although no such feature exists at the time of this review.

Acefast Crystal (2) T8 Headphones Review

I did notice subtle static noise from the Acefast T8 after pairing it with my devices, though this mostly occurs while listening to podcasts and audiobooks in a quiet environment. Granted, this problem was not repeated with some of my colleagues who tried the buds at the office and they probably won’t bother you on your daily commute or at the gym.

Acefast Crystal (2) T8 Headphones Review

Connectivity performance was on point with no interruptions when tested on an iPhone, Android tablet, and laptop. When switching to calls, voice pickup is below average and people on the other line report that my voice sounds muffled during calls. Latency is on par with other wireless headphones we’ve reviewed with no noticeable lag between video and audio.

Battery duration

Acefast T8 is advertised to last up to 7 hours on continuous music playback at 70% volume and 4 hours on calls, while the charging case extends the total listening time to 30 hours; that’s enough resistance for a pair of wireless headphones and more than most competitors. . Each earphone has a 45 mAh battery, while the case has a 480 mAh charge.

Acefast Crystal (2) T8 Headphones Review

I found that the headphones lasted me 6-7 hours on a single charge during my testing period, which is in line with Acefast’s stated values. A full charge from 0 to 100% takes about 90 minutes, while a 10-minute quick charge gives you 2 hours of use. There’s no wireless charging, so you’ll have to find a power outlet and plug in a USB-C cable to recharge.


Acefast T8 earphones offer a unique transparent design with smart features like magnetic storage inside the case and a large LED battery indicator display. Battery life is stellar, offering up to 30 hours with the charging case. Audio quality is average, and there’s no ANC or support for any of the high-bitrate codecs. That wouldn’t be a problem for an entry-level pair of earphones, but the Acefast T8 currently retails for $100, which puts them in a tough space considering the fierce competition in the TWS market.

The T8s are exclusive to the Acefast online store for now, though if the T6 series is any indication, they should appear on Amazon soon enough. Still, we’d wait for a deep discount before pulling the buying trigger.

Acefast Crystal (2) T8 Headphones Review

We have to give credit to the Acefast design team for creating one of the best looking headphones on the market. All six color options on offer on the Acefast T8 look great and we’re excited to see what future iterations of the range will bring to the table. We can only expect a richer feature set with Hi-Res Audio support and more control over the audio equalizer.

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