MARINE A1000 - The JBL marine A1000 mono subwoofer amplifier delivers1000-Watts RMS using a Class D amplifier design to ensure high outputand minimum current draw. Speaker-level inputs allow this amplifier tointegrate into almost any system, even one using your marine’s factoryradio. You can use the low-pass filter and variable bass boost to maximizethe performance of your subwoofer and enclosure, while a phase switchensures that the bass will blend well with your full-range speakers.

MARINE A1000 
mono subwoofer marine amplifier 
600 watts RMS x 1 at 4 ohms (1000 watts RMS x 1 at 2 ohms)Max power 2000 watts 
1900 watts RMSx1 (Two amplifiers) 
Class D amp technology 
frequency response: 25-320 Hz 
variable low-pass filter (32-320 Hz, 12 dB/octave) 
variable bass boost (0-12dB at 45Hz) 
phase switch (0, 180 degrees) 
wired remote level control included preamp inputs and outputs 
speaker-level inputs (speaker wire-to-RCA adapters included) 
4-gauge power and ground leads recommended — wiring and hardware notincluded with amplifier 
fuse rating: 35A x 3 
WxHxD=320mm x 51.3mm x 180mm WxHxD=12-5/8” x 2-1/16” x7-1/8”

Product information: https://www.harmanaudio.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw403d8153/pdfs/JBL%20Marine%20Amplifiers_Specsheet_EN.pdf?srsltid=AfmBOop-H_du4CWZXPybUvq0I-5kB7x3Glm0-1Xmpg_P_QszpwQrKM_g