just adding to @chsims1 correct request.
This is what I get with a Khadas Tone 2 Pro, using version 2.882:
volumio@rpi:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 4/4
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 IEC958/HDMI [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: ALSA [bcm2835 ALSA], device 2: bcm2835 IEC958/HDMI1 [bcm2835 IEC958/HDMI1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
Subdevices: 3/3
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
card 5: Pro [Tone2 Pro], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
volumio@rpi:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 3353:a002
Bus 001 Device 002: ID 2109:3431
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ID 3353:a002
is a Khadas Tone2 Pro, which shows this when doing dmesg
:
[ 141.438009] usb 1-1.2: new high-speed USB device number 5 using xhci_hcd
[ 141.568596] usb 1-1.2: New USB device found, idVendor=3353, idProduct=a002, bcdDevice= 1.00
[ 141.568602] usb 1-1.2: New USB device strings: Mfr=1, Product=3, SerialNumber=2
[ 141.568607] usb 1-1.2: Product: Tone2 Pro
[ 141.568612] usb 1-1.2: Manufacturer: Khadas
[ 141.568617] usb 1-1.2: SerialNumber: 0CA20007
[ 141.694282] usb 1-1.2: 1:3 : unsupported format bits 0x100000000
[ 141.697636] hid-generic 0003:3353:A002.0003: hiddev96,hidraw0: USB HID v1.10 Device [Khadas Tone2 Pro] on usb-0000:01:00.0-1.2/input4
[ 141.699200] input: Khadas Tone2 Pro as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2/1-1.2:1.5/0003:3353:A002.0004/input/input1
[ 141.768162] hid-generic 0003:3353:A002.0004: input,hidraw1: USB HID v1.10 Device [Khadas Tone2 Pro] on usb-0000:01:00.0-1.2/input5
So in principle, PI 4 with version 2.882 works with Khadas Tone 2 Pro (can’t verify a Schitt Mode 3, don’t have one)
@gguertin please always mention the exact version number, saying “latest” is of no use as in 1 day or 2 weeks later this info will already be misleading 
Looking forward to the log.