How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 6 min read · Independent comparison
• ATH-M50XBT2 — biggest strength: Up to 50 hours of playback per charge, plus LDAC support and 45 mm large-aperture drivers tuned for deep, accurate bass.
• ATH-M50XBT2 — biggest trade-off: It's a finished, closed system. There's no analog input and no way to swap the internal DAC or amp later.
• Khadas Tea Pro — biggest strength: A 96 g, 7.85 mm aluminum DAC/amp with an ES9039Q2M chip, 3.5 mm and 4.4 mm outputs, and Bluetooth 5.4 — it upgrades headphones you already own.
• Khadas Tea Pro — biggest trade-off: It is not a headphone. You still need your own cans, and its 11-hour battery only applies to that accessory.
• Pick the ATH-M50XBT2 if you want to press play and go. Pick the Tea Pro if you already love a pair of wired headphones and want to feed them better signal.
The ATH-M50XBT2 is the second generation of a wireless design that a lot of people already trust for studio-flavored sound. The formula here is simple: proprietary 45 mm large-aperture drivers and a dedicated amplifier, a 15–28,000 Hz frequency range, 38 ohm impedance, and a tuning that leans toward deep, accurate bass without smothering the mids. If you listen to bass-heavy genres, podcasts, or mixes where you want to hear what's actually in the low end, that driver-and-amp combo is the reason to care.
Battery is where it genuinely separates itself. Audio-Technica rates it at up to 50 hours of continuous playback, and a 10-minute USB-C top-up buys you up to 3 hours. The full charge takes about 3 hours. For anyone who commutes, travels, or just forgets to plug things in, that's the headline feature. You also get Bluetooth 5, Sony's LDAC codec at up to 990 kbps for higher-bitrate streaming on supported Android devices, dual microphones with beamforming for clearer calls, and the A-T Connect app for personalizing the sound.
Buy it if you want one product that does everything: over-ear isolation, long battery, wireless freedom, and a wired-feeling tuning. Skip it if your priority is driving a pair of high-impedance wired headphones you already own — this is a complete headphone, not a signal chain upgrade. It's also a closed system, so there's no codec-hopping, no output swapping, and no tweaking beyond what the app offers.
The Khadas Tea Pro is a completely different animal, and it's worth being blunt about that. It's a portable headphone amplifier and DAC, not a headphone. The core of it is an ES9039Q2M chip decoding up to 768 kHz/32-bit, feeding 3.5 mm and 4.4 mm outputs. That 4.4 mm balanced jack is the interesting part: it's the kind of output that lets you properly drive demanding, higher-impedance headphones, and Khadas rates the Tea Pro for up to 600 ohm loads. If you own a pair of wired headphones that feel underpowered straight out of a phone or laptop, this is aimed squarely at you.
The physical design is the other hook. At 96 g and 7.85 mm thick with an aluminum body, it's roughly credit-card sized, and the MagSafe-compatible magnets let it snap onto iPhone 12–17 for a clean, aligned stack. There's a 0.95-inch AMOLED display for playback info, a leather back to resist scratches and stains, Bluetooth 5.4 with about 10 m of range, app-based control, environmental noise cancellation, and an 11-hour battery.
Buy it if you're a wired-headphone person who wants better sound on the move — especially if you're on an iPhone and want a magnetic, no-cable-clutter solution. Skip it if you don't already own wired headphones you like, or if you want a single all-in-one listening device. It also maxes out at 20 Hz–20 kHz in its stated range, so if you're chasing sub-bass extension below 20 Hz, that spec matters. And remember: the 11-hour figure is for the amp, not for your headphones.
Side-by-Side: Which Should You Choose?
• Best for battery life → audio Technica ATH-M50XBT2. Up to 50 hours versus the Tea Pro's 11.
• Best for bass and studio-style tuning → audio Technica ATH-M50XBT2. 45 mm dynamic drivers with a dedicated amp.
• Best for high-resolution wired decoding → Khadas Tea Pro. ES9039Q2M at up to 768 kHz/32-bit.
• Best for iPhone users who want a magnetic stack → Khadas Tea Pro. MagSafe-compatible mounting for iPhone 12–17.
• Best for people who don't want to carry a second device → audio Technica ATH-M50XBT2. It's the whole system in one.
• Best for call clarity → audio Technica ATH-M50XBT2. Dual mics with beamforming.
• Best for a low-hassle travel kit → audio Technica ATH-M50XBT2 for all-in-one listening; Khadas Tea Pro if you're pairing it with your own wired cans.
For most people reading this, I'd buy the audio Technica ATH-M50XBT2. It's the easier recommendation because it solves the whole problem in one box: long battery, wireless freedom, LDAC, and a bass-forward tuning that suits everyday listening. I'd only steer you to the Khadas Tea Pro if you're already invested in wired headphones — especially power-hungry ones — and want to hear them at their best from a phone. In my opinion, the Tea Pro is a specialist's tool, and a very good one; the M50XBT2 is the everyday answer.
what is aptx adaptive headphones
aptx Adaptive is a Bluetooth audio codec, and "aptx adaptive headphones" refers to headphones that support it. Neither product here lists aptx Adaptive in its data: the ATH-M50XBT2 supports LDAC, and the Khadas Tea Pro supports Bluetooth 5.4. So if aptx Adaptive is a must-have for you, check each product's own spec sheet before buying.
Is the Khadas Tea Pro a headphone?
The ATH-M50XBT2's listed connectivity is wireless Bluetooth with no headphone jack, and its controls are touch-based. So the design here is wireless-first. If a wired input is essential to you, that's a reason to look at the Tea Pro's approach instead.
The ATH-M50XBT2 is rated for up to 50 hours of continuous playback, with up to 3 hours from a 10-minute USB-C rapid charge and about 3 hours for a full charge. The Khadas Tea Pro is rated for about 11 hours. For all-day listening, the headphone has a large advantage.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: Audio-Technica ATH-E70 vs Jabra Evolve2, Audio-Technica ATH-GL3BK vs Nacon RIG R5: Gaming Headphones, FIFINE Gaming Audio Mixer vs BietrunPro Xlr Usb Dynamic