Welcome to the forum!
I am using the same machine and it works well for me. Good luck with your first night!
I've have this machine as a loaner as I await a replacement Airsense For Her (I think it was damaged in shipping). I also have the Wisp as well as the Airfit p10. All good products although I think the Resmed algorithm works better for me.
Report any even minor problems, because we can usually help!
most people find it hard to breathe with setting at 4, and usually pick their starting pressure at 6 or higher. I did not have this difficulty.
I was intrigued that the maximum pressure was 6. Usually auto feature is used allowing higher pressures if needed. Typically the upper limit is set at 15 or above.
noise - any machine would be quiet at such low pressures. The higher the pressure, the harder the machine works, and then you hear the motor more.
a note about your machine. please share the model number. DISCONNECT humidifier, or remove water tank. Then, turn the machine over. On the bottom, the id plate can be found. It should read something like DS260P or something like that. If you have the model that has the highest data capability, this will include a 5 - such as DS560PS.
You can see a lot of things, if data is your thing, by getting free software - SleepyHead or EncoreBasic. Most of us find SleepyHead paints a more detailed picture in case we have to sort things out. (and SleepyHead is compatible with the ResMed Auto for Her, if you transition to that machine.)
Dedicated to QALity sleep.
You'll note I am listed as an Advisory Member. I am honored to be listed as such. See the fine print - Advisory Members as a group provide advice and suggestions to Apnea Board administrators and staff concerning Apnea Board operation and administrative policies. Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.