What we sell?
MB Quart NA2-500.5 500W NA2 Series Class-D 5-Channel 2-Ohm Stable Amplifier + Complete 5 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit Amp  

MARINE GRADE PROTECTION: YES
Amplifiers are ASTM certified which defines that marine amplifiers must use conformal coated PC boards to resist corrosion from salt spray & moisture.
PRE-AMP CIRCUITRY: Q-Stasis Pre Amplifier Stage
The highly engineered Q-Stasis pre-amplifier stage reduces incoming noise from source units dramatically improving sound quality
INPUTS:
2 Pair, RCA (Front/Rear)
1 Pair RCA (Subwoofer) Nickel-Plated
High temperature impact resistant with hex screw terminals that allow for secure connections and is erosion resistant
OPERATION MODE:Four channel and with dedicated subwoofer channel
Unique design allows this amplifier to power full range speakers with a dedicated channel for a subwoofer.
CROSSOVER / SIGNAL SHAPING: Switched FULL / LPF / HPF
Complete control of amplifier signal, essential when using two or more amplifiers
CLASS / TOPOLOGY: Full Range Class D
Highly efficient circuit topology which helps the amplifer develop a lot of power in a very small heatsink.
OUTPUT DEVICES TECHNOLOGY: PWM MOSFET Power Supply
Stable power through the PC board with minimal heat generation
HEAT SINK: Aluminum
Quickly dissapates heat to allow the amplifer to run lower impedance for longer duration
POWER SUPPLY: Simpatico Coil Design
The dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices
BASS REMOTE:Included
Wired Bass Remote allows adjustments to bass frequencies to be made from the control mounted anywhere in the vehicle.
OUTPUT CONNECTIONS: Quick Dissconect Wires, RCA Connections
Quickly remove amplifer when you are putting machine up for the winter of as a security precaution
CONNECTIONS TYPE: Nickel-plated connections
Nickel plated corrosion resistant connections
DIAGNOSTICS: Three-stage protection circuits
Monitor thermal, overload, DC, and speaker short protection with lighted indicators on the amplifier end panel
MARINIZED / WATERPROOF: YES
Water resistant for durability in any environment

Technical Details: 
CLASS
Full Range Class D
VARIABLE VOLTAGE
0.2V~9V
SIGNAL TO NOISE RATIO
>90dB
FREQUENCY RESPONSE
20Hz-20kHz
CROSSOVER TYPE
N/A
CROSSOVER FREQUENCY RANGE
CH1 & CH2
Switched HP/ Full
CROSSOVER FREQUENCY RANGE
CH3 & CH4
Switched HP/ Full
CROSSOVER FREQUENCY RANGE
CH5
LPF 50Hz-150Hz
BASS BOOST
0-12dB@45Hz
SUBSONIC FILTER
60Hz
POWER @ 2-OHMS
4 x 80W + 1 x 200W
POWER @ 4-OHMS
4 x 40W + 1 x 100W
TOTAL CHANNELS
5
AUDIO INPUTS
RCA
POWER TERMINAL 12V/GND
Molex 10 ga
SPEAKER TERMINAL WIRE GAUGE
Molex Plug Connector
FUSING
1 x 40 Amps
CERTIFICATIONS
Marine & Powersports
Ultra Compact design built for powersports applications
Marine and powersports certified
RMS Power Rating:
4 ohms: 40 watts x 4 chan., 100 watts x 1 chan.
2 ohms: 80 watts x 4 chan., 200 watts x 1 chan.
Total power output: 500 watts
Pulse Width Modulated MOSFET power supply
Wired remote bass level control included
LED power (green) and protect (red) indicators
Soft start turn-on
5/4/2 channel operation
Speaker-level (high-level) inputs
Preamp RCA outputs to daisy chain multiple amps
3-way protection circuitry (thermal, overload, and speaker short protection)
Dual speaker terminals simplify the hookup of multiple speakers
Heavy duty aluminum alloy heat-sink

Amp Kit Specs:
High Quality Thick 17 Feet FT 4 Gauge GA Power Cable
Premium 3 Feet FT 4 Gauge GA Ground Cable / Inline AGU Fuse Holder & 80A + 100A Fuse Included!
True Sound 17 Feet FT Double Shielded RCA Cable (Two Dual RCA's + 1 Single RCA)
High Quality 17 Feet FT / 18 GA Turn-On Cable & 20 Feet FT / 16 GA Speaker Wire
All Accessories / Terminal Included! Perfect for Any Installer Shop, great for Car / Truck / Motorcycle / RV / ATV

Package Contents: 
MB Quart NA2-500.5 
Amp Kit 5 Channels

Policy  
// NEED TO PRICE MATCH?
See lower price? We will try to give you an even lower price! Just ASK us!
// NEED TO TALK TO US?
Just email us and we will get back to you within 24 hours
// NEED TO RETURN or EXCHANGE?
You can return the unit with Ebay Easy Return step or just email us and we will tell you the exact instruction on how to return the unit.  We will also give you an RA# so the unit won't be lost.
// OUR RETURN / EXCHANGE POLICY
30 days full refund . We will pays for shipping 2-way for any defective units . Unwanted? Just return it ot us for full refund . NO QUESTIONS ASKED!