I have a chance to pick up a Ultra Linear UL1500X for $50 bucks and was wondering if it was a good amp and price? It would be used to replace my Earthquake PH120.2. to run 2 Earthquake dbx10 10 subs. Here are the specs: 1500W Class X Mono Block Amplifier 12-17V Power Input 0.2-8V RCA Input Voltage Frequency Response 10 Hz - 350 Hz Short / Overload / Thermal Protection Bridgeable with second Class X amplifier 24dB Variable Subsonic Filter 24dB Variable Low Pass Filter 0-18dB Variable Bass Boost Remote Gain Control Module RCA Line Output RMS Power @ 14.4V DC 1 x 500W @ 4 Ohm 1 x 750W @ 2 Ohm 1 x 1000W @ 1 Ohm RMS Power @ 17V DC 1 x 750W @ 4 Ohm 1 x 1000W @ 2 Ohm 1 x 1500W @ 1 Ohm