Currently Being ModeratedFeb 22, 2012 12:27 PM (in response to davida414141)Re: Best Way to Connect HD400 to a Marshall AVT150H Head (pic included)
For what you describe: you will want to use the four Cable method (AKA 4CM). This allows you to switch between the Marshall's pre-amp section (distortion and tones) and the HD's modelled amps.
What I am not 100% sure of is how well the HD400 copes with 4CM. The HD500 and Pro cope very well, the Bean - just about and the HD300 not at all.
The HD400 has an FX Loop so can do 4CM in theory but I don't recall anyone around here actually doing 4CM with the HD400.
More details on what 4CM and why you would want it here ==> http://line6.com/support/docs/DOC-2523
Currently Being ModeratedFeb 22, 2012 12:33 PM (in response to jimsreynolds)Re: Best Way to Connect HD400 to a Marshall AVT150H Head (pic included)
This link suggests that 4CM works ok with the HD400 ==> ... http://line6.com/support/message/315637#315637
Other interesting links assert so also in the search her ==> http://line6.com/support/search.jspa?resultTypes=all&dateRange=all&peopleEnabled=false&q=hd400+4CM&containerType=&container=&containerName=&username=&rankBy=relevance&newq=hd400+4CM*&numResults=15