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.
If you're concerned about cardio exercise wasting away your muscle tissue, two to three moderate intensity cardiovascular sessions per week of 30 minutes should be enough. Keep in mind that it's possible to sustain your heart rate at an aerobic capacity for 30 minutes or more during weight lifting.or general guidelines, the American College of Sports Medicine recommends 30 minutes or more of moderate-intensity exercise three to five times per week.