This is based on the mkII...I don't have a manual for the original 414 so this may not work.
Connect the L LINE OUT, EFFECT 1 SEND, EFFECT 2 SEND and SYNC OUT jacks to 4 inputs on your computer audio interface.
Set the INPUT select switches to TAPE.
Set the EFFECT 2/TAPE CUE switch to EFFECT 2.
Turn all EFFECT SEND knobs fully counter-clockwise.
Raise the channel faders to 0. Raise the master fader to 0.
PAN mixer channel 1 hard L.
PAN mixer channels 2, 3 and 4 hard R.
Tape track one is now isolated on the L LINE OUT jack because tracks 2, 3 and 4 are panned to the R channel.
Rotate the EFFECT 1 SEND knob on channel 2 to a nominal level (maybe around 1:00).
Rotate the EFFECT 2 SEND knob on channel 3 to a nominal level (maybe around 1:00).
Tape track 2 is now isolated on the EFFECT 1 SEND jack, and tape track 3 is isolated on the EFFECT 2 SEND jack.
Tape track 4 is automatically isolated on the SYNC OUT jack, which is essentially a direct out jack for tape track 4 only.
You can monitor playback by setting the monitor source to L-R. It'll be funky because track 1 will be in the left ear and tracks 2, 3 and 4 will be in the right, but at least you'll be able to hear what's coming off tape.
Adjust levels to taste.
Probably other better ways to do it but that's what popped out at me when I took a look at the block diagram.
-EDIT-
The bugger with this idea is that tape track 4 will be pre fade, pre-eq so it'll be a raw version that goes to the computer, but because both effect sends are post fader you can't keep 'em out of the main mix; they can't be isolated from the main mix. You CAN use EFFECT 2 as a pre-fade send if you switch the EFF 2/TAPE CUE switch to TAPE CUE and then you just need to make sure to leave the INPUT switch on the track/channel to GUITAR (which is the same as OFF as long as nothing is plugged into the GUITAR jack), then you can leave channel one swept hard L, and channel 2 hard R, and then turn channel 3 to GUITAR and use the EFFECT 2 SEND for that one and then still use the SYNC OUT jack for track 4. 6 of one, a half dozen of the other. There isn't a way that I see to get all 4 tracks out on dedicated outs
with level controls. With this second scenario you really haven't gained anything because now track 3 can no longer be monitored in the monitor mix, and track 3 can no longer be effected by the eq section if you are applying that for some reason during the transfer.
Anybody see something I'm missing?
SURELY by now they would have a simple way to dump into digital.
You paid $50...what's to complain about? Its not a matter that they haven't figured it out...you get what you pay for. Your 234 and 244 could do it easy, but (in the case of the 244) the mixing section is more advanced or (in the case of the 234) it was purpose built for a 4 in 4 out application. The 414 is what it is. I don't expect my 20 year old Subaru to win the Gran Prix...
