can you record your own sounds on this
No, they come with prerecorded sounds for specific tanks.
Does anyone have or sampled either their T-34 or KV-1 SLU?
I am still waiting for a shipment from China with the M26s and KV-1 SLUs. I have heard engine samples for both tanks and they both sound good. When I get them, I will make a video and post it.
I am only getting 15 units every 2 months and I currently have orders for over 20. (I am dealing with a small manufacturer in China, so I have to be patient).