Dan,
The Sony has a motorized analog variable output. Think of it as a conventional passive pre amp with remote control.
It will allow you to lower the volume & take it up to the maximum output of the player. It does NOT have gain like an active pre amp. The Theta Miles is like this also, the Theta products have a reputation for higher than industry standard output. Depending on your speakers & room size, you probably won't need an active pre amp with the Sony or Theta Miles. If you're using small monitors in a large room, you'll might want an active pre amp to make the music more dynamic..
Daniel
The Sony has a motorized analog variable output. Think of it as a conventional passive pre amp with remote control.
It will allow you to lower the volume & take it up to the maximum output of the player. It does NOT have gain like an active pre amp. The Theta Miles is like this also, the Theta products have a reputation for higher than industry standard output. Depending on your speakers & room size, you probably won't need an active pre amp with the Sony or Theta Miles. If you're using small monitors in a large room, you'll might want an active pre amp to make the music more dynamic..
Daniel