I'm a bit concerned about possibly overloading/driving the inputs on my L2t. The manual says the LEDs (variously located) turn green when a signal is present or flash red when clipping or limiting is occurring. Unless I have the output on my instruments or POD HD300 set very low indeed, my LEDs show amber. Amber is not mentioned anywhere in the manual so I have no idea if this is good, bad or indifferent.
It's the same if I use the RCA style line in with an external sound source (mp3 player for example) - the LED is amber.
I'm guessing amber is okay because the L2t would be a very quiet unit indeed if all the inputs stayed green. Presumably red means turn down the input!