I had looked previously at the Aries Mini but it required an iPad to support the Lightning control app. I didn't want to spend for an iPad. Now the app is available for an iPhone which I've got. I just got off the Audio Advisor site (they carry the Aries Mini) before I saw your post.
Thanks. Let me know what you think about working with an external hard drive and sound quality. I'll be very pleased if it works out.