I use the Guitarix effects in combination with a real preamp (a Mesa Triaxis). I use a 2in 4out soundcards and my signal chain is as follows:
Guitar > IN1
IN1 > [Calf Gate, GxWah, GxTubeScreamer] > OUT1
OUT1 > Triaxis input
Triaxis output > IN2
IN2> [GxCabinet, Calf Mono Input, Calf Reverb, Gxdigital_delay_st] > OUT2
I use Carla as an LV2 Host to control, but I really find it inflexible, compared to the Guitarix rack.
When using plain Guitarix, I control everything via MIDI with an FCB1010 (modded with the UNO firmware) so that my bottom row of pedals switches the program and the top row acts as stompboxes for the effects, and the two expression pedals are mapped to the volume and wah respectively.
What I would like is a mono effects loop plugin which I can put in the Guitarix rack. This plugin would essentially create two new Jack ports (send and return) so that I can put my external gear in between. I guess a stereo plugin would also be useful for other applications.
Obviously this effect should be "bypassable", like all other Guitarix plugins, so that I can include/exclude the external chain.
What do you think ?