Over the years, the
technology used to create audio amplifiers has grown by leaps and
bounds. We consider it our mission to use our expertise in developing
the latest technologies and to bring you the absolute best sounding
amplifiers on the market and of course at a reasonable price. From its
clean, sleek design to its high quality components, you will be amazed
at the quality and power that these new Phenom amps offer.
 
The RXD-M4 is a mono amplifier with 6,000 watts peak output and 1500 watts
CEA-2006 rated power. Here at Rockville we offer the best value in car audio. We
therefore want to make it easy for you to compare our products to any brands on
the market. The peak rating can be used to compare with brands who use peak
ratings such as Boss and Power Acoustik while the CEA rated RMS rating can be
used to compare with brands who rate their items using the CEA standard such as
Kicker, Rockford, Alpine, etc.
 
One of the tricks to determine the real power of a car amplifier is to
multiply the fuse rating by 10 to determine the true RMS power. This
formula almost always works within 20 %. RXD-M4 features a 200 Amp External In-Line ANL Fuse Block.
Compare this to other amps on the market with similar fuse ratings and
you’ll see that with the RXD-M4 you are getting your money’s worth and
then some.
 
This unit also features a high speed MOSFET power supply and
studio-grade bipolar output stage transistors. It has a fully adjustable
12dB Octave cross over with differential circuitry. Other features
include a subsonic filter, a fully adjustable bass equalizer, mute and
delay soft start technology, a phase control switch, and a dashboard
subwoofer control for added convenience. The RXD-M4 is protected by a
full IC controlled circuit and has professional peak limiter circuitry
guaranteeing distortion free musical playback at all levels.
 
The RXD mono amplifiers took years of engineering. A lot of new
technology went into these amps. We call this technology optical coupler
Class-D. This new technology gives the amplifier punchier bass compared
with a typical class “D” amp. A major difference in our OC technology
is the preamp input stage and output stage are separated in circuitry.
It is less susceptible to noise, which typically is picked up from the
preamp input. The RCA input accepts both balanced and un-balance inputs.
If there is potential inference in the car, the balanced input signal
is less susceptible to noise.
 
The Phenom amps by Rockville use only the top parts. We use Siemens
correction capacitors which are well-known for producing crystal clear
sound quality. We use TL072 OP (power supply) which is composed of
mosfets. Typical class “D” amps use JRC4558, which is composed of
transistors only. Mosfet power supplies have a higher speed, lower loss
rate, lower noise, and ultimately supply more efficient and clean power
along with lower THD (distortion). We redesigned the layout of the PCB
boards to allow the amp to run smooth and cool. Each and everything
amplifier we manufacture is tested twice. Once at the semi-finished PCB
stage of production and then another test is done at the final assembly.
We also run age tests on them. After this is all done, we hire a 3rd
party independent company unaffiliated with our factory or with us to go
to the factory and do random inspections of the power and over 20 other
tests. We guarantee these amps will satisfy you. We are so confident in
your satisfaction of this amplifier that we will offer you a 90 day
money back guarantee. This means if for any reason you want to return
the amplifier back and get a full refund we will send you a label and
take the amp back and give you all your money back. (Amp must be
complete along with the box).

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