you can get jack to USB audio convertors. they arent expensive but it complicates things a bit more.
how about this
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all you would need then is some sort of amp sim on your e-book and away you go. no need for an amp plus you would have all your MP3's or whatever on tap
how about this
[Invalid or Expired Link Removed]
all you would need then is some sort of amp sim on your e-book and away you go. no need for an amp plus you would have all your MP3's or whatever on tap