You might try the Tascam US-122L instead. Basically the same as the 144, only quite a bit cheaper without a firewire connection, which is not needed for REW.Dan,
How's the Tascam working for you?
I'm trying to decide between that and the EMU Tracker. I'm fed up with M-Audio, between their horrible driver (non)support and spam.
Ouch. That tells me it might not be possible to generate a calibration file with this thing, or it might not work well using the Radio Shack SPL meter as the measurement mic, since it uses a line-level output. Apparently the 1/4” inputs are intended for guitars, which have very low-level signals.The AudioBox PDF manual says:
Both channels of the AudioBox USB have a Mic/Line connector using the Neutrik Combo connector.
which initially sounds great since they used the word "line", but alas, then they go on to explicitly say:
Plugging a line level source into the instrument inputs on the front of the AudioBox USB not only risks damage to these inputs but also results in a very loud and often distorted audio signal. (In other words, don’t plug a line level source into the combo jacks of channel 1 or 2.).