Anyone tried USB mic as alternative to A3 mic?

I've read about the A3 going into sleep mode after 10 seconds, which I would find really annoying, but would quite like the option of voice control (I have got into it since owning a Google Home). I was wondering whether anyone had tried using a USB mic with the NEO U9-H? In particular, I was wondering if there was a mic which could sit under the TV and accurately pick up voice commands from a sofa about 13 feet away?

Yes I have and am using it right now to enter this text. I have the Logitech Yeti USB mic and it works very well even in a soft voice but does make a few mistakes that must be edited if using it to enter text. It did not understand Yeti.

Normally I have it connected to the MINIX NEO U1 TV box next to my bed but moved it to my living room for this test.

This a very large, expensive mic that if in the vertical position stands about 12 inches tall and looks like a radio studio mic. It does have excellent sound but is expensive and there are far cheaper options.

For the last part of this message I am using the microphone in a Logitech C270 webcam. It is only 720p for video but the mic is excellent and I am about 10 feet from it and speaking in a normal voice. It is less than $50 CAN$ normally but I got it on sale for $30.00. I would suggest you try any Logitech webcam instead of just the microphone alone . I using it with Facebook Messenger video chat as an alternative to Skype as I find it excellent.

With both of these devices, I am using the TalkText app from the PlayStore and using that apps' on screen keyboard to access the mic as I have yet to find a better one in Android and the Google Talk alone is inferior. There are a few corrections that must be made and I am using the A3 air mouse and also a Logitech M325 USB wireless mouse to help with them.

I love voice entry for sending text messages to phones for free using the app Text Plus.

What I like about voice entry is the enormous volume of text that I can enter quickly. I then go back and make corrections if needed. Also most of my voice entry is on the box next to my bed where I normally use just a Logitech mouse and the mic .for entry. I have an A2 lite remote there too but it is useless in low light. There are lot of corrections needed but the amount of correct text makes it worthwhile.