Mornin' I have a Peavey Minx 110 that I have, by many a TB'er to keep, even if it is moth balled in a closet. However I have a question about a function of this combo. There is an input/output about which in the manual is said: A stereo out/in jack is provided for line-in patching of effect devices from two amplifiers. A shielded 'Y' cord with a 1/4'' stero plug branching into two 1/4' mono plugs is required for this connection. The "tip" of the stereo plug routes the signal effects device input. The effects output is returned through the "ring". The "sleeve" is ground. The first click of this stereo jack can be used as a preamp output with out disturbing signal flow to the remainder of the system. NOTE: if the second click is used without returning any signal to the system from an effects device the preamp will be disabled. The Preamp level is approx. 1 volt RMS and is high impedance (600 ohms). Any effects device used in this loop must be capable of recieving this 1 volt input and providing 1 volt in order to properly drive the power am So, does it basically an effect loop? Can the Preamp out function be used to drive a power amp? Can my most combos with a Preamp out be used to drive a power amp and thus a cabinet? Is there a good book on equipment that someone can suggest that I can pick up so that I can stop asking these questions.