so what im thinking is I need a dual xlr to 1/8 cable for a true line in on the tascam.Is that how I would line in on this deck from the m148 because if i go xlr in with phantom power is that a line in also.
I'm not sure it makes a difference. There are two line ins on that DR100MKii...one is from the XLRs and one is from the 1/8 inch jack. As discussed in another thread recently, alot of recorders nowadays don't really have a 'true line in', at least in the sense that the routing is any different than the mic in routing. The only difference between the two is 20db in sesitivity. Other than the sensitivity difference, I don't know if that's the case on the DR100MKii. You'd think that the line in from the XLRs might be a different routing from the line in on the mini jack.
All things equal, I tend to prefer using the locking XLRs ahead of the 1/8 mini jack as an input connection, but over the years I can't say that it's made that much difference to me. I know some people are concerned about the connector on the mini jack pulling out but I've never had an issue with that.