alsa conf for USB 24 channel Audio

Hi,

I got a cymatic audio uTrack24 recorder and I when I connect it to my linux it recognises it as an usb 24 ch sound card. The device records all 24 tarcks into a singe multichannel wav file.
But I'd like to record to my laptop 24 channel in separate files.
So I started to play around with alsa.

The application would be like this:

arecord -f cd -D pcm.mic1 -d 10 ch1.wav
arecord -f cd -D pcm.mic2 -d 10 ch2.wav
arecord -f cd -D pcm.mic3 -d 10 ch3.wav
...
arecord -f cd -D pcm.mic24 -d 10 ch24.wav

However an appropriate alsa fonf file is needed.

When plugged in
aplay -L | grep :CARD | wc -l gives
-50

unplugged: 37

I dont know how to set up a proper conf file.

I did this so far for the 1st channel but, no sound on it.

pcm_slave.ins {
pcm "hw:0,1"
rate 44100
channels 24
}

pcm.mic1 {
type dsnoop
ipc_key 12342
slave ins
bindings.0 0
}

Could you please help me how should this be?