Khadas Tea - World's First MagSafe Headphone Amplifier for Smartphones
Jan 14, 2022 at 1:20 AM Thread Starter Post #1 of 62

KHADAS

Sponsor: KHADAS
Joined
Nov 14, 2020
Posts
41
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Location
Shenzhen, China
Dear Community!

It is with great joy and anticipation that we announce the upcoming launch of our latest hi-fi audio product the ‘Tea’, an ultra-slim high-resolution headphone amplifier for smartphones. This portable amplifier features the high-performance ESS ES9281AC Pro DAC, as well as LDAC and aptX HD bluetooth audio via the Qualcomm QCC5125 chip.

tea_igg_banner_02.482.png


Why Tea?

‘Tea’ was created to satisfy a high demand from our community for a “Portable Tone2 Pro”; many music streaming apps such as Spotify and Apple Music now have high-quality lossless music that can only be fully enjoyed when you connect a portable DAC such as the ‘Tea’ to your Android or iOS smartphone.



Pocket Friendly

'Tea' measures just 7.95mm at its thickest point, which means it can still comfortably slip into your pocket even when magnetically attached to your smartphone.

pocket_friendly.PNG


LDAC & apt-X HD

Android users can enjoy the freedom of wireless high-resolution digital output direct from a streaming app via aptX HD and LDAC from a Qualcomm QCC5125 bluetooth chip. Sample Rate: up to 24bit 96KHz

ldac_aptx_hd.PNG


Magsafe Compatible

"Khadas Tea" magnetically attaches to your iPhone 12 or newer smartphone, or an Android phone equipped with a MagSafe compatible case. No more messy wires and dongles, just freedom of pure style.

magsafe.PNG


ESS Technology

'Tea' ultra slim high-resolution headphone amplifier is powered by the high performance ESS ES9281AC Pro DAC, which delivers desktop-class audio. Sample Rate: up to 32-bit 384KHz @PCM, or DSD 256 (Native)

ess_technology.PNG


Analog Output

'Tea' brings back the analog audio jack to your smartphone with 3.5mm output, so you can use your favourite high-fidelity headphones to listen to lossless streaming audio directly from your streaming app. Supports up to 300 ohm impedances.

THD+N, 1KHz, 300Ω: 0.000355% (-109dB)
Max Output @300Ω: 20.8mW (2.5Vrms)
Max Output @32Ω: 165mW (2.3Vrms)

analog_output.PNG


Lossless Audio

Did you ever wonder what "Lossless Audio" means when you open Apple Music or Tidal? These are high-fidelity audio tracks that can only be rendered at their original quality with an "external DAC-amplifier" such as "Khadas Tea" attached to your smartphone.

lossless_audio.PNG


Inbuilt Battery

'Tea' incorporates a high-capacity 1160mAh lithium-polymer battery that provides up to 8 hours of continuous playback time, so you can enjoy your high-fidelity music throughout your entire day without draining your smartphoneʼs battery.

inbuilt_battery.PNG


Bluetooth Calls

'Tea' includes two inbuilt microphones so you can receive and make calls without removing your headphones. Press the 'power' button to accept the call, and speak into the microphones located next to the USB-C port.

bluetooth_calls.PNG


Bit-Perfect Audio

For the Audiophile who must always have a bit-perfect audio connection, a wired connection guarantees that you're always listening to the original data stream. 'Tea' includes two cables in the box for connecting to your iOS or Android device. Each cable measures 100mm in length (w/ plugs), cable diameter of 2.1mm. The USB-C to Lightning Converter is MFi Certified.

bit-perfect.PNG


Available On Indiegogo

Creating 'Tea' for your listening pleasure is no easy feat. Show your support for our project by joining our Indiegogo Crowdfund. Your contribution will enable us to bring this breakthrough hi-res audio product to market.

indiegogo.PNG

Technical Specifications

tech_1.PNG

tech2.PNG
 

Attachments

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Last edited:
KHADAS Stay updated on KHADAS at their sponsor profile on Head-Fi.
 
https://www.khadas.com/
Jan 14, 2022 at 11:08 AM Post #4 of 62

Ceeluh7

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Joined
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Location
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Dear Community!

It is with great joy and anticipation that we announce the upcoming launch of our latest hi-fi audio product the ‘Tea’, an ultra-slim high-resolution headphone amplifier for smartphones. This portable amplifier features the high-performance ESS ES9281AC Pro DAC, as well as LDAC and aptX HD bluetooth audio via the Qualcomm QCC5125 chip.

tea_igg_banner_02.482.png

Why Tea?

‘Tea’ was created to satisfy a high demand from our community for a “Portable Tone2 Pro”; many music streaming apps such as Spotify and Apple Music now have high-quality lossless music that can only be fully enjoyed when you connect a portable DAC such as the ‘Tea’ to your Android or iOS smartphone.



Pocket Friendly

'Tea' measures just 7.95mm at its thickest point, which means it can still comfortably slip into your pocket even when magnetically attached to your smartphone.

pocket_friendly.PNG

LDAC & apt-X HD

Android users can enjoy the freedom of wireless high-resolution digital output direct from a streaming app via aptX HD and LDAC from a Qualcomm QCC5125 bluetooth chip. Sample Rate: up to 24bit 96KHz

ldac_aptx_hd.PNG

Magsafe Compatible

"Khadas Tea" magnetically attaches to your iPhone 12 or newer smartphone, or an Android phone equipped with a MagSafe compatible case. No more messy wires and dongles, just freedom of pure style.

magsafe.PNG

ESS Technology

'Tea' ultra slim high-resolution headphone amplifier is powered by the high performance ESS ES9281AC Pro DAC, which delivers desktop-class audio. Sample Rate: up to 32-bit 384KHz @PCM, or DSD 256 (Native)

ess_technology.PNG

Analog Output

'Tea' brings back the analog audio jack to your smartphone with 3.5mm output, so you can use your favourite high-fidelity headphones to listen to lossless streaming audio directly from your streaming app. Supports up to 300 ohm impedances.

THD+N, 1KHz, 300Ω: 0.000355% (-109dB)
Max Output @300Ω: 20.8mW (2.5Vrms)
Max Output @32Ω: 165mW (2.3Vrms)

analog_output.PNG

Lossless Audio

Did you ever wonder what "Lossless Audio" means when you open Apple Music or Tidal? These are high-fidelity audio tracks that can only be rendered at their original quality with an "external DAC-amplifier" such as "Khadas Tea" attached to your smartphone.

lossless_audio.PNG

Inbuilt Battery

'Tea' incorporates a high-capacity 1160mAh lithium-polymer battery that provides up to 8 hours of continuous playback time, so you can enjoy your high-fidelity music throughout your entire day without draining your smartphoneʼs battery.

inbuilt_battery.PNG

Bluetooth Calls

'Tea' includes two inbuilt microphones so you can receive and make calls without removing your headphones. Press the 'power' button to accept the call, and speak into the microphones located next to the USB-C port.

bluetooth_calls.PNG

Bit-Perfect Audio

For the Audiophile who must always have a bit-perfect audio connection, a wired connection guarantees that you're always listening to the original data stream. 'Tea' includes two cables in the box for connecting to your iOS or Android device. Each cable measures 100mm in length (w/ plugs), cable diameter of 2.1mm. The USB-C to Lightning Converter is MFi Certified.

bit-perfect.PNG

Available On Indiegogo

Creating 'Tea' for your listening pleasure is no easy feat. Show your support for our project by joining our Indiegogo Crowdfund. Your contribution will enable us to bring this breakthrough hi-res audio product to market.

indiegogo.PNG

Technical Specifications

tech_1.PNG
tech2.PNG

This seems like a very nice and sleek set-up. It does make sense for sure.
 
Jan 14, 2022 at 11:16 AM Post #7 of 62

rubymydear

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Pretty interesting device. Best wishes with it. Forgive me if I missed it, but how exactly is audio data transferred from the phone to the device? Data transfer over the magsafe connection? Very curious about this: bandwidth, latency, etc. Is it an open protocol/low level?

Another way of asking: will all apps work because the connection works at a lower level?

And: Thinking about the latency, will there be a noticeable lag for video sync?
 
Jan 14, 2022 at 11:21 AM Post #8 of 62

megabigeye

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Pretty interesting device. Best wishes with it. Forgive me if I missed it, but how exactly is audio data transferred from the phone to the device? Data transfer over the magsafe connection? Very curious about this: bandwidth, latency, etc. Is it an open protocol/low level?

Another way of asking: will all apps work because the connection works at a lower level?

And: Thinking about the latency, will there be a noticeable lag for video sync?
Isn't MagSafe for charging only? So it's just a Bluetooth DAC/amp that sticks on with a magnet? Geez. Nifty.

I know Essential and Motorola had magnetic connections for data where you could attach DACs, cameras, etc., but I think Apple's is just for power. Somebody correct me if I'm wrong.
 
Jan 14, 2022 at 11:27 AM Post #9 of 62

Ceeluh7

500+ Head-Fier
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Location
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Pretty interesting device. Best wishes with it. Forgive me if I missed it, but how exactly is audio data transferred from the phone to the device? Data transfer over the magsafe connection? Very curious about this: bandwidth, latency, etc. Is it an open protocol/low level?

Another way of asking: will all apps work because the connection works at a lower level?

And: Thinking about the latency, will there be a noticeable lag for video sync?
It looks like, I could be wrong that you can plug in your headphones/iems to the 3.5 and get audio thru either bluetooth or thru the usbc port with a usbc-usbc. Not a bad form factor.
 
Jan 14, 2022 at 11:31 AM Post #10 of 62

KHADAS

Sponsor: KHADAS
Joined
Nov 14, 2020
Posts
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Location
Shenzhen, China
Hi @rubymydear
The Khadas Tea supports two inputs:
1) Bluetooth
2) USB

For Bluetooth setup, does with latency, and with the sample rate up to 24bit 96KHz. The Tea also supports LDAC, aptX HD for some Android devices.

You can also setup the Khadas with the USB cable that included in the package for low latency application.

BTW, the MagSafe is just s snap & aligned magnets attach to your iPhone :)
B433A063-783F-4183-BA80-39A674C8D826.jpeg

Have fun!
 
Last edited:
KHADAS Stay updated on KHADAS at their sponsor profile on Head-Fi.
 
https://www.khadas.com/
Jan 14, 2022 at 11:31 AM Post #11 of 62

broopa

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Apple is only power, but the magnets seem to replace the need for a band, connection is bluetooth & usb. Ordered one and curious to see how it is.
 
Jan 14, 2022 at 11:32 AM Post #12 of 62

bnupy

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Does the iPhone get apt x hd ?
 
Jan 14, 2022 at 11:40 AM Post #14 of 62

DivineCurrent

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This looks awesome! Khadas if you can somehow implement a 10-band parametric adjustable band EQ into this device, I am sold!
 

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