It should be launched at the end of the month, but it will take a month or two for Amazon to arrive.
I understand that Aiyima and Tilear are the same company and the product offered appear to be identical. I have purchased several of your amplifiers over the last 12 months - First the original unbranded Aiyima A07 (No Anti Pop !) then a branded Aiyima A04 (Green PCB but with the Elma 3000uF Capacitors) and then recently having specifically ordered an original Black PCB "Tilear XZD-1752", I received an amplifier branded as a "Tilear XZD-1752 Pro" ?? This has the same Green PCB and downgraded, generic 2,200uF Power Supply Capacitors as well as other makes of Capacitors in the Signal path.
As a customer, once you have made a good performing amplifier such as the Aiyima A04 which has been getting excellent reviews it is really unacceptable for your Retail outlet and other resellers to continue to sell these products based on the original specification and photographs when what is being shipped is quite different. I am losing the trust in your company to actually manufacture and ship the products that you are advertising.
The video of the "New" A07 just appears to be a copy of the Breeze line of products. If you are planning on going down the cheap integrated amplifier route with this type of product the people on these Groups are going to lose interest very quickly.
I am with a lot of people that feel that things like USB, Optical, Bluetooth etc. are a waste of time as anyone using these technologies will probably want to use a DAC that costs more than these amplifiers. What I would like to see would be a remote control for the volume so that they can easily be used in an AV type of environment and possibly a couple of RCA Analogue Inputs rather than just one.
Bluetooth technology moves forward so quickly that having it fixed on the PCB means it is out of date very quickly - People want HD now and still most vendors are pushing the old technologies.
From my experience with the TPA325x based amplifiers, I actually think the TPA3251 based models generally perform better unless you spend well over $100 for a TPA3255 based model. Lower voltages mean cheaper components and better Power Supply Capacitors etc. Most of us don't need 300W per channel in a domestic situation - Lower Power but Sound Quality is far more important.
You really made a wonderful little amplifier with the original Tilear XZD-1752 / Aiyima A04 (Black PCB) and generated a good following with lots of people looking at upgrades to make it even better. Please don't lose your way with a lack of innovation and start making mass produced, mediocre copies of competitors products. You can clearly do better than this and I would like to see a genuinely improved specification on the A04 (with good quality components) as well as an audiophile (Fever) version of the A07.
From the DIY Upgrading Community, of which I am a member, it would be really useful if you were to provide the circuit diagrams for the amplifiers so we don't have to guess the functions of the circuit by trial and error !! With a little work, the DIY Community are getting these amplifiers to a level of performance where they are competing on Sound Quality with $500 or even $1000 products. Some of the modifications could easily be incorporated into future products as they are generally quite simple and often only add some cheap bypass capacitors in the right places or a better supply to the Op-Amps.
Also any product with built in High Voltage (110 or 250 volts) Power Supply needs to be earthed and should really meet the international safety regulations. The advantage of an external supply is that you don't have to meet the high voltage regulations. Some of your competitors - even though they use a three pin plug with an earth, only connect the two live wires internally. This is just waiting for an accident to happen.
Please just bring us some quality products - You have done it before !!