I want to ask you guys can you connect a 6.5mm jack splitter to I2m so you can connect two instruments at ounce.I have a Guitar and a SP 606 Workstation, or can use the splitter on the basis I am using one the instruments? Than you in Advance.
Yes, you can as long as only one instrument is making sound at a time. But it also depends on what is connected.
The input impedance of the i2M is very high (10M ohms) so it won't care if you connect multiple instruments. However, the other instruments may care. For example, if your guitar has passive pickups, it expects a high impedance input so that it doesn't load the pickups. However, the output from your workstation will look like a very low impedance so it will really load a passive guitar pickup making the guitar level low and muffled.
Using an A/B switch may be a better option (I've used this many times) so you can then easily switch between different instruments without the instruments interacting with each other.