[Louis6507]

Wow, thank you for the quick reply, Heavyduty. (^_^)

I already posted this Q in my introduction thread and I hate to ask twice but, maybe if the answer is here, it can help anyone else who ends up with my same questions:

Should I connect to my head unit's 2.5v RCA sub outs or tap into my speaker channels? If I use my sub out, I can use the low-pass filter in my HU to block the bass frequencies to my factory speakers. But, I see the recommendations in the FAST-9999 thread to always use the high-level inputs instead. My HU claims it puts out 20 watts RMS x4 channels at 4 ohms.

I'm not sure which is considered the high-level input for this tube. And, if the RCA's are the lower choice, would it be worth it, to use the bass filter in my head unit?

Thanks again. (^_~)