Dear Wave backers,
Cut to the chase. Let's see some photo of our Wave chassis in two colors. (Gun metal gray, and Red)
We didn't beautify these pictures. And these are still pretty enough. You could see the overall design language just fit our original direction but more refined. Two pocket there are for battery and SOM.
And we are finalizing the touch screen frame with vendor so the 5'' high resolution screen could mount up there.
On the other hand, let me show you the long waiting Audio Precision Test report of our
EP 3.5 PCB. The result is amazing.
The photo below is a quick snap I took when we are testing. Unlike last Audio Precision update. This time the board is fully integrated with nice battery (3100mA here. Could use 5000mA too), USB C connection (a little bit hard to see), fully balanced output and single-ended output for headphone, digital circuits are all working here as well. And here we try to make the output gain even higher to 6V (!!) and it still works very well.
Let's see the THD+N in 1K Hz with 45K bandwidth first.
Both channel's distortion are even much lower than previous PCB and our specs. You might ask why two channels THD are different? That is because we hand matched the left channel and didn't work on right yet. In production PCB, both channel will be the same. And Signature Edition will have the hand match fine tuned for even better.
Signal To Noise ratio is very nice too. 116dB (None-weighted) in 45K bandwidth. On Wave "IEM" version, this element is super important.
The Frequency Response is surely flat all the way to 40K Hz.
Please notice, the smooth high frequency roll off here is done by a nice analog low pass filter. I personally prefer use more analog components to roll off instead of using harsh digital filter to do that. Benefit? Time domain accuracy and better phase error.
In Wave's user menu, you will still have the choice of different digital modes. Including
FRM, TCM and FTM. Also, there are
GAIN settings for different type of earbuds and headphones.
For now, we are pretty happy for the whole system sound performance. And you ask,
how does it sound? My answer is:
As good as it could get. Although currently there are several hand wired jumpers and few patches on the board. But my ears told me, this is a winner!
We will collect all the places need to be changed on this prototype and we should have the pre-production PCB design done on third week of Sep.
For software and user interface, I will make another update.
Larry