I think the requests you've received for additional photos are reasonable.
Your ad for the Rowland Capri could use at least one additional photo of the back of the units to show the input/output configuration and power connections.
The ad for your speakers could use at least one additional photo showing the rear binding posts and controls.
Usually, for electronics, I post a front, back, and serial number detail.
For speakers, I post a front, and a detail of the back showing the binding post configuration and serial number.
If the items have any visible damage, I try to post a photo of that as well.
IMO...
Your ad for the Rowland Capri could use at least one additional photo of the back of the units to show the input/output configuration and power connections.
The ad for your speakers could use at least one additional photo showing the rear binding posts and controls.
Usually, for electronics, I post a front, back, and serial number detail.
For speakers, I post a front, and a detail of the back showing the binding post configuration and serial number.
If the items have any visible damage, I try to post a photo of that as well.
IMO...

