Effects units

[Meggy]

In effects units, what is the difference between 'insert effect' and 'send effect'?

[iridescence]

There is a difference between send effects and insert effects. Send effects are connected to the mixer's effects send so that more than one device can be routed to it. Reverb and delay are the typical send effects. Insert effects are those effects that you route the instrument's sound through before going to the mixer. Typical insert effects are compression, distortion and filters.