Report Abuse. First of all - RCA's, Pre-amps, Pre-outs, or just Outputs are all common terms referring to a head units low/line level rca style outputs used to drive an amplifiers input.The most basic HU's just offer a single pair (left and right) of pre-amp outputs.eport Abuse. First of all - RCA's, Pre-amps, Pre-outs, or just Outputs are all common terms referring to a head units low/line level rca style outputs used to drive an amplifiers input.
An ideal cardio session should be around 45 minutes. If you lift weights before aerobic training, youâll only need 15-20 minutes of cardio. Youâll get the same benefits as you would do in 45 minutes without weight training.
It takes 20 to 30 minutes for your body to burn fat once you start doing cardio. In this interval, you will burn glycogen and BBAs. The first 20-30 minutes of cardio are a waste. For optimal results, you should lift weights for at least 20 minutes and then do cardio exercises.n other words, too much cardio could prevent weight loss. The more cardio you do, the more you have to continue to do to get results. HIIT workouts along with weight training burn fat after the workout is over and help maintain muscle.