Option D and C will be the most effective for the amount you will want to spend for the upgrades, and they will also make the most noticable sound difference.
First Sound preamps have not remote, but they do offer a tape loop for your Video application needs. Its lack of remote is made up with really great volume control using holcro resistor controls. Remote volume controls add a veil to the sound that can be really difficult to compensate even with the convenience of a remote. Of course, you need to hear this sort of distortion in order to get a clear understanding of the sonic comprises between remote or high quality control.
Good luck in your task.
First Sound preamps have not remote, but they do offer a tape loop for your Video application needs. Its lack of remote is made up with really great volume control using holcro resistor controls. Remote volume controls add a veil to the sound that can be really difficult to compensate even with the convenience of a remote. Of course, you need to hear this sort of distortion in order to get a clear understanding of the sonic comprises between remote or high quality control.
Good luck in your task.

