How much would the batteries last with a Tascam DR2d updated with last firmware and recording in 24/48 using two mics (dual line-in + mic-in) that are powered by either a 9V battery box and a 9V preamp ?
I ran a test with that exact setup described in the quote. I taped a show using two fresh Enregizer Alkaline Power - AA batteries (those are the "standard" Enregizer AA's I think).
Batteries last for 3 hours, 55 minutes and 23 seconds.
I ran a new test with Energizer Ultimate Lithium batteries.
My setup changed a bit as I swapped the preamp for a second battery box :
Tascam DR2d updated with last firmware and recording in 24/48 using two mics (dual line-in + mic-in), each of them powered by its own 9V battery box.
My 16GB SD card is now full. That's already 7 hours, 40 minutes and 43 seconds
of music and the battery indicator on the Tascam still shows 3 bars out of 3 !!Edit:
the Tascam finally went out of power after 9 hours, 44 minutes and 55 seconds