Thanks chaps. This is what the manual says:
DI Output Jack: Balanced DI output for sending a balanced signal directly to low noise studio equipment. The DI can be configured to either Pre (default) or Post EQ via internal jumper settings. See “A Look Inside” for specific jumper settings. NOTE: The DI out is a balanced output. A 1/4” stereo jack is used as opposed to a more common XLR for space considerations. To connect to an XLR input a simple adapter is needed (rather than an adapter/transformer). The 1/4” stero jack is wired as follows: Tip=Positive, Ring=Negative, Sleeve=Common.
If anyone has a specific recommendation for an adapter or cable with adapter, it would be great thanks as I don't really understand this stuff and need to be spoon-fed!!!!