[Flexradio] Unable to get an acceptable Tx audio

[Jerry Harley]

Compaq 2.4 EVO,  New SDR1000, M-Audio D44, Hosa cables, Heil 
goldline/hc5, Yaesu/Heil cord.
My best audio is at mic gain 50, but mic meter never reads better than 
25.  If i turn the mic gain to 55 I can get -22 but the transmit audio 
has a lot of ehco.   With just key down,no audio I'm seeing 60db on the 
panadapter.  Computer noise?

How are people who connecting  directly to the mic D44 doing push to talk?
Jerry WA2TTI