[Kean FiiO]

We are developing a multifunctional hifi bluetooth product for desktop, which can be used with your desktop headphone amp, old-version amplifier or active speakers.
You can enjoy high-quality listening experience through Bluetooth connection with mobile phones and music players. In addition, BTA30 has independent DAC and Bluetooth transmitting function, you can use it to connect TV with Bluetooth headset.
Here are some features and configuration introductions.

BTA30 has three working modes:
Mode 1- BT RX: High-quality LDAC and aptX-HD Bluetooth receiver, then connected to the power amplifier, headphone amplifier or active speaker through RCA / Optical / Coaxial
Mode 2 - DAC : High-performance DAC equipment, support Optical / Coaxial digital input to RCA analog output, connect to old-version amplifier or active speakers
Mode 3- BT TX: High-quality, long-range Bluetooth transmission, converted to Bluetooth transmission through Optical / Coaxia, connect headphones to enjoy music

Main configuration
1，24bit audio core - CSR8675，BT5.0
2，additional digital audio&clock processor-FPGA
3，AKM AK4490 High performance DAC chip(TBD)
4，Sound-plus OP AMP OPA1662
5，External antenna for longer transmission distance
6，APP control for more audio settings

In fact, there are already similar products on the market, and the BTA30 being planned will have differences in functions and configurations. In order to make a more suitable product, please give us your feedback.

 

[Kean FiiO]

We have enough experience in Bluetooth development, so the progress will be faster. Next, I will frequently update the product block diagrams and specifications. Please pay attention to post updates.

 

[Ab10]

USB Type C port for power only?
Knob is for volume control for the unit?

 

[sensenonno]

fiio, is k7 still in development?

 

[Kean FiiO]

USB Type C port for power only?
Knob is for volume control for the unit?

Thank you for your attention.
Yes, just as you mentioned，BTA30 is designed for desktop use，so it powered by USB C and has no battery inside.
The analog output level can be adjusted by the volume knob，this will be more convenient with some active speakers, because their volume knobs are on the back panel.
In addition，you can fix the output level to maximum through APP settings.

 

[Kean FiiO]

fiio, is k7 still in development?

It is amazing to hear you know K7 project plan
Yes we will restart K7 after fully evaluating the new THX module. Next week, I will start a new post to discuss.

 

[Kean FiiO]

Here is a preliminary block diagram of BTA30.
In order to improve the audio quality, especially the quality of the SPDIF interface, our engineer added an FPGA as a digital audio processor.
Som, the sampling rate of SPDIF output will up to 192k

 

[caprimulgus]

Any chance of AptX-LL support? And will TX have the same codec support as RX?

 

[Kean FiiO]

Any chance of AptX-LL support? And will TX have the same codec support as RX?

Yes，we can support aptX-LL in Bluetooth TX mode. Regarding other formats, we are still evaluating, because CSR8675 has no enough program space for all formats.
Up to now, we have finished the following formats：
RX mode：SBC, LDAC，AAC，aptX，aptX-HD（or aptX-LL）
TX mode：SBC, LDAC, aptX，aptX-LL
Please write down the format you need for each work mode

 

[xLoud]

K7 looks interesting

 

[cleg]

it definitely needs USB audio support

 

[Kean FiiO]

it definitely needs USB audio support

sue, it can transmit USB AUDIO via Bluetooth when connected to computer

 

[Ithilstone]

Looks promising - what I am currently looking for is PC >usb>BT TX LDAC to use with Ananda BT and Mobius - so BTA30 would be a bit of overkill but depending on price i might just wait a bit longer
SO 2 quick questions - when it is planned for a release and do you have a price in mind?

 

[Kean FiiO]

Looks promising - what I am currently looking for is PC >usb>BT TX LDAC to use with Ananda BT and Mobius - so BTA30 would be a bit of overkill but depending on price i might just wait a bit longer
SO 2 quick questions - when it is planned for a release and do you have a price in mind?

The idea is great.
However, we have only completed the aptX-HD transmit when USB audio connect. It is not entirely certain whether the LDAC can be achieved. We will continue to try that.
If anything goes well, we will sell it in July, and the price is about $100, maybe lower

 

[Kean FiiO]

K7 looks interesting

haha
we can discuss K7 through my new post this weekend