Maybe some other users can answer my first few quick questions:

1. vox harm button on panel - can I do this without the bulky Ketron footswitch?
>>>AJ:- Yes. Press and hold MIC button. On screen, use VOC on/off, OR ... you can use volume slidder on panel (Vocalizer).

2. vox harm to fs - can a standard fs control on/off of harmony?
>>>AJ:- No. Only KETRON Programmable Footswitch Pedals FS1 (single swtch), FS6 (6 switches) and FS13 (13 switches) can be used.

3. Ajam verify - How can I tell if AJamsonic is installed?
>>>AJ:- Serial number confirms that the unit left KETRON USA with the package, however, if purchased new, we have no clue(s) what the previous owner(s) did with the unit to add/delete the AjamSonic content.

4. version - pg 121 Rel 1.2.2 11/05/17; Firm V3.02, Ser# H1AA10017; T=45.80 V=2.87; K.Firm: V1.9
>>>AJ:- This unit did have the AjamSonic kit installed opon delivery to the first buyer.

5. guitar and harm at once - they share a slider - can I operate imultainiously?
>>>AJ:- Priority is given to Harmony. For Guitar, you will have to go into MIC2 screen to access it's individual volume, effects ... etc.

6. harm during playback - is there a separate setting for vocal effects during audio/midi playback"
>>>AJ:- Yes. Press and hold down MIC to access mic and vocal-related effets.

7. SSD - HD - size - how do I verify size, and free space on internal drives?
>>>AJ:- Press MEDIA. Touch the drive you want to 'work' with 0 then touch INFO to display that drive's information. Get your caluclator out ... for the memory is displayed in mb!

8. RAM sounds delay - does the delay go away if you load a RAM sound into a user slot?
>>>AJ:- RAM can hold 2 sounds at any given time. Any sound loaded in memory is displayed in red. If you select any red/already loaded sound, the sound is accessed instantly (as any preset/AjamSonic sound). If you attempt to load a 3rd/other sound, then the first sound is removed, 2nd one takes it's place and 3rd/other sound gets loaded into voice slot where 2nd loaded sound initially resided (hence the delay when choosing/loading any additional voices into RAM). It works on 1st in, 1st out principle.

This'll get me started. I'm skimming thru the manual as I type this, but hands on experience is always welcome!
>>>AJ:- Best comprehensive re-written ENGLISH manual can be downloaded from here:- http://www.ketronamerica.com/SD7%20Revised%20Manual%20by%20AJ.pdf

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