First you said:

"… I can use Guitar rig and loads of other hosts but not amplitube."


You do know these (Guitar Rig and AmpliTube) are NOT hosts? They are just plug-ins that NEED a host like BIAB, Sonar, Cuabse, Reaper,... to work. I'll assume that was just word/phrase slip/misuse, I do it all the time, and we'll just press on.

Are you trying to use AmpliTube 3 (32 bit only) or 4 (64 bit only)? BIAB only supplies the (free) AT version 3 - so that is what I will assume we are talking about. Note, unless you have already "registered" the free AT V3 in your IK MM account the free version of AT3 3 is no longer downloadable (I think)- but the newer free AT Custom Shop (which is really just free AT Version 4) is.


If you are using AT 4 (free or commercial) then yes you will need JBridge since AT 4 is 64 bit only and BIAB is 32 bit only. But if you have the CURRENT JBridge installed and configured properly it should make no practical difference: translation, it should be "transparent" in use.

I don't normally use AT3 or 4 in BIAB (I use it in my DAW - Sonar a lot) but I just tested BOTH AT 3 (VST) and AT 4 (again VST) and they both work in BIAB - for me. Note, while I have full version of AT 3 (as well as AT4), not free but ones, the actual application (the .dll or "VST") is the SAME! The difference between free and commercial are the add-ins/ons - supplied/available amps, pedals, presets, etc.

Next, I assume you know how to and have gotten and tested OTHER audio VST's, or even DX's, to work properly in BIAB? Something like a VST reverb or VST delay or other audio effect.

I also assume you have tested/tried or have gotten this free AT 3 VST to work in some OTHER host like say Music Creator 7 or Reaper or Sonar?

If all the testing above has been done and works except within BAIB then we may need more detailed info about your set up, audio settings, drivers, etc.

Larry

Win10Pro,i9,64GB,2TBSSD+20TBHDDs,1080TI,BIAB'24,Scarlett18i8,Montage7,Fusion 8HD,QS8,Integra7,XV5080,QSR,SC-8850,SPLAT,FL21&others,Komp.14,IK suite&others, just a guitar player-AXE FX III &FM9T, FishmanTP, MIDIGuitar2, GK2/3'sw/GI20