Question 1

is this amp  4 or 8 awg power and ground

Accepted Answer

It has 4 awg connections for both power and ground. I am using mine with 8 awg wire and it runs perfect. I am not running it at max gain though. Only using it to run one 10" L7!

Question 2

Does this amp have an auto turn on feature so I dont have to wire up a remote turn on?

Accepted Answer

Another option in which I chose since it does need turn on signal is to use an added retained accessory power relay or just a simple relay. Your going to remove side panels to run RCA anyway so tap easily into a 12v power source when vehicle acc is on which can be found closest to amp position that is passing to rear of vehicle already. I used this one from Radio Shack. Model: 275-233  Catalog #: 2750233 0.5-AMP SPST REED RELAY AT 12VDC. This set up should be used to turn on multiple amps and relieve the head unit circuit. No tiny wire to run either. Although if this wire is just attached to RCA prior to install for a 1 amp install then this is the easiest way. If you use the relay then remember to fuse it to protect the head unit circuit.

Question 3

Does this amp provides High (Speaker) Level Inputs so it could be connected to a factory head unit?

Accepted Answer

I know this is late, but it may help others. Yes it does and you can tie into signal at rear speaker wires. The built in crossover will allow use of a sub woofer. Only drawback to this set up is that if you turn down head unit bass for doors ect. it also affects sub amp. HU built in crossover would be better for a balanced and more adjustable sound. This requires the HU to be upgraded however. A line output converter is a good option too even if you have low input ability. Makes for a neater install IMO.  Bottom line is that it is dooable. Good amp too. Birthsheet is 648 watt @ 2 ohm 14.4 v on mine.  In vehicle at idle in real life I average 629 using amp draw and voltage formula, I also own the P300-1 which pushes about 415 @ 2 ohm real life wattage. Birth sheet of 426. Banging for years in wife's ride on that one no issues. The new one rocks good so far in my ride. Love these amps. So much power for the size. Also as a D class amp they are efficient and take less away from the vehicle power system causing less strain. Bang some high power AB amps for a few years and your whooping on that alternator and battery shortening their lives. Less light dimming too.

Question 4

Does the R500x1D come with the remote or is it sold separately?

Accepted Answer

It comes with the remote. I thought it didn't so I bought one for it and it already comes with it so I have two now

ASIN	B00BF6HYDE
Amazon Bestseller	#1,349,841 in Automotive ( See Top 100 in Automotive ) #202 in Car Dual-Channel Amplifiers
Brand Name	Rockford Fosgate
Customer Reviews	4.8 4.8 out of 5 stars (3,390)
Global Trade Identification Number	00780687340605
Item Dimensions	21.6 x 17.3 x 5.1 cm
Item Weight	5.35 Pounds
Manufacturer	ROCKFORD （ロックフォード）
Model	R500X1D
Number of Channels	1
Part Number	R500X1D
UPC	780687340605
Voltage	12 Volts

ROCKFORD ロックフォード R500X1D 1チャンネルアンプ（小型デジタルモノラルパワーアンプ）

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