Well, after some googling, I found out I had asked this question in 2012!
It was established that the motor should not always be running.
Any idea where I should be looking? I can see some leaf switches and a servo inside, but cannot see how these might work with the motor.
Thanks for any help. I did some comparisons to my Tascam DP-06 and have to say that I actually thought that although the DP-06 was a little clearer, the Porta One sounded hotter and more powerful somehow. Might also have been my guitar playing too!
Regards
Carl