What I found is that the channel strips in MainStage work in audio instrument , or software instrument or in Midi that you can use from the selection already made or make patches using available plugins , and set them as a channel strip . . I left Midi out as I am using a real instrument ( electric / acoustic guitar ) . I found out that it seems so far .. LOL !! That only the audio instrument channel strip will work with certain real instruments . The guitar being one of them . There is a small mono / stereo icon under the volume switch in the audio instrument channel strip . I pressed it and voila I got my sound to work . This is not present in the software instrument or Midi strips . I am somewhat disappointed because I can only use Logic's dynamic effects such as Sculpture , or ESX 24 when setting a channel strip up as a software instrument track , and this does not allow my guitar to be used . Is Sculpture not a guitar software ? It seems that it is , and a real shame that I can only use it with samples looped in the browser that are part of Logic's software music ( Jam Packs etc ) , or with Drums etc ?

As I thought . I am disappointed that I can't use my guitar with the effects in Logic's SI channel . ESX 24 has lots of guitar change sounds as well as many other plugins that I can't appropriate in the AU channel . I have seen Mainstage 101 and 105 Guitar rigging . I see that I was lead according to how the syatem works . I thought maybe another way could be used to connect the SI to my guitar . Thanks Rounik you seem to know alot here .

OK .. I found a Terratec AXON AX50 USB Guitar to MIDI Converter . Here are the specs ... I assume that it accepts the standard 1/4 inch cable plug from an instrument into it . I can then use the software instrument channel effects . Terratec AXON AX50 USB has arrived: It is the "little brother" of the extremely successful AXON AX 100 MKII probably the most powerful device of it kind. The AXON AX 50 USB is based on the same technology as its "big brother," but it has additional options, such as a USB port with four additional virtual MIDI ports, which makes it ideal for state-of-the-art, computer-based studios. With its 32-bit RISC processor, the guitar-to-MIDI controller immediately translates the vibrations from each string that you strike or strum and sends information about the pitch, dynamics and tone duration to the connected MIDI sound generator. The MIDI sound generator brings your music to life using any sound you choose. You want a flute accompaniment with your guitar? How about creating fat synthesizer sounds with your bass? Or play the sax with your acoustic guitar? What about using your violin to generate choir voices in your sampler? It's all possible now! With the AXON AX 50 USB, you can control an external instrument and up to four other software sound machines on your computer: a MIDI-OUT connector and four additional virtual MIDI ports via USB make all of this possible. We also provide you with 128 sounds based on the renowned KONTAKT Player so you'll be able to get started right away and of course, all of the sounds are multitimbral. You can divide fingerboards and strings into up to 12 play zones, making it easy to control an entire orchestra. The editor included in the package lets you make changes right on your computer. AXON AX 50 USB means easy operation and new connection options ideal for all guitarists, bassists and violinists who want to integrate MIDI equipment into their computer-based studios and experience the endless sound and composition possibilities.