The table bellow details what will be seen on the meter and heard on the monitor according to Ardour's settings.

Ref	Monitoring Mode (System Prefs)	Tape Machine Mode (System Prefs)	Track Rec Enable	Master Rec Enable	Transport	Auto Input (Session Props)	Meter (What you see)	Monitor (What you hear)
1	Ardour	Off	Off	Off	◼	On	Input	Input
2	Ardour	Off	Off	Off	◼	Off	Disk (Silence)	Disk (Silence)
3	Ardour	Off	Off	Off	▶	On	Disk (Audio)	Disk (Audio)
4	Ardour	Off	Off	Off	▶	Off	Disk (Audio)	Disk (Audio)
5	Ardour	Off	Off	On	◼	On	Input	Input
6	Ardour	Off	Off	On	◼	Off	Disk (Silence)	Disk (Silence)
7	Ardour	Off	Off	On	▶	On	Disk (Audio)	Disk (Audio)
8	Ardour	Off	Off	On	▶	Off	Disk (Audio)	Disk (Audio)
9	Ardour	Off	On	Off	◼	On	Input	Input
10	Ardour	Off	On	Off	◼	Off	Input	Input
11	Ardour	Off	On	Off	▶	On	Input	Disk (Audio)
12	Ardour	Off	On	Off	▶	Off	Input	Input
13	Ardour	Off	On	On	◼	On	Input	Input
14	Ardour	Off	On	On	◼	Off	Input	Input
15	Ardour	Off	On	On	▶	On	Input	Input
16	Ardour	Off	On	On	▶	Off	Input	Input
17	Ardour	On	Off	Off	◼	On	Disk (Silence)	Disk (Silence)
18	Ardour	On	Off	Off	◼	Off	Disk (Silence)	Disk (Silence)
19	Ardour	On	Off	Off	▶	On	Disk (Audio)	Disk (Audio)
20	Ardour	On	Off	Off	▶	Off	Disk (Audio)	Disk (Audio)
21	Ardour	On	Off	On	◼	On	Disk (Silence)	Disk (Silence)
22	Ardour	On	Off	On	◼	Off	Disk (Silence)	Disk (Silence)
23	Ardour	On	Off	On	▶	On	Disk (Audio)	Disk (Audio)
24	Ardour	On	Off	On	▶	Off	Disk (Audio)	Disk (Audio)
25	Ardour	On	On	Off	◼	On	Input	Input
26	Ardour	On	On	Off	◼	Off	Input	Input
27	Ardour	On	On	Off	▶	On	Input	Disk (Audio)
28	Ardour	On	On	Off	▶	Off	Input	Input
29	Ardour	On	On	On	◼	On	Input	Input
30	Ardour	On	On	On	◼	Off	Input	Input
31	Ardour	On	On	On	▶	On	Input	Input
32	Ardour	On	On	On	▶	Off	Input	Input
33	Audio Hardware	Off	Off	Off	◼	On	Input	Silence
34	Audio Hardware	Off	Off	Off	◼	Off	Disk (Silence)	Disk (Silence)
35	Audio Hardware	Off	Off	Off	▶	On	Disk (Audio)	Disk (Audio)
36	Audio Hardware	Off	Off	Off	▶	Off	Disk (Audio)	Disk (Audio)
37	Audio Hardware	Off	Off	On	◼	On	Input	Silence
38	Audio Hardware	Off	Off	On	◼	Off	Disk (Silence)	Disk (Silence)
39	Audio Hardware	Off	Off	On	▶	On	Disk (Audio)	Disk (Audio)
40	Audio Hardware	Off	Off	On	▶	Off	Disk (Audio)	Disk (Audio)
41	Audio Hardware	Off	On	Off	◼	On	Input	HW Pass Through
42	Audio Hardware	Off	On	Off	◼	Off	Input	HW Pass Through
43	Audio Hardware	Off	On	Off	▶	On	Input	Disk (Audio)
44	Audio Hardware	Off	On	Off	▶	Off	Input	HW Pass Through
45	Audio Hardware	Off	On	On	◼	On	Input	HW Pass Through
46	Audio Hardware	Off	On	On	◼	Off	Input	HW Pass Through
47	Audio Hardware	Off	On	On	▶	On	Input	HW Pass Through
48	Audio Hardware	Off	On	On	▶	Off	Input	HW Pass Through
49	Audio Hardware	On	Off	Off	◼	On	Disk (Silence)	Disk (Silence)
50	Audio Hardware	On	Off	Off	◼	Off	Disk (Silence)	Disk (Silence)
51	Audio Hardware	On	Off	Off	▶	On	Disk (Audio)	Disk (Audio)
52	Audio Hardware	On	Off	Off	▶	Off	Disk (Audio)	Disk (Audio)
53	Audio Hardware	On	Off	On	◼	On	Disk (Silence)	Disk (Silence)
54	Audio Hardware	On	Off	On	◼	Off	Disk (Silence)	Disk (Silence)
55	Audio Hardware	On	Off	On	▶	On	Disk (Audio)	Disk (Audio)
56	Audio Hardware	On	Off	On	▶	Off	Disk (Audio)	Disk (Audio)
57	Audio Hardware	On	On	Off	◼	On	Input	HW Pass Through
58	Audio Hardware	On	On	Off	◼	Off	Input	HW Pass Through
59	Audio Hardware	On	On	Off	▶	On	Input	Disk (Audio)
60	Audio Hardware	On	On	Off	▶	Off	Input	HW Pass Through
61	Audio Hardware	On	On	On	◼	On	Input	HW Pass Through
62	Audio Hardware	On	On	On	◼	Off	Input	HW Pass Through
63	Audio Hardware	On	On	On	▶	On	Input	HW Pass Through
64	Audio Hardware	On	On	On	▶	Off	Input	HW Pass Through