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Price: $795.00
Product ID : SDS-470C-UPG
Manufacturer: Class D Audio USA
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SDS-470C with Upgrade Power Supply. This is our SDS-470C amplifier with upgraded and larger capacitors in the power supply. SDS-470C Audio Power Amplifier by Class D Audio.This amp features our newly designed State of the Art aluminum Powder-Coated Enclosure with choice of Black or Silver brushed anodized front . One of our top of the line SDS amplifiers. 300W RMS Per Channel into 8 ohms, 600W RMS Per Channel into 4 Ohms. This amplifier features one of the finest balanced XLR input stages available and also single ended RCA jacks. Either of these inputs can be selected by a switch on the back of the amplifier. You will also see it has adjustable gain control for each channel that are also rear mounted. These can be used to adjust the amp to match output of your other equipment such as matching to the sweet spot of your preamp. They can also be used to setup and balance your room for best performance. Size: 12" X 12" X 3.5" Shipping Weight 20 Pounds.

Model SDS-470C-UPG
Number Of Channels 2
RMS Power Per Channel 8 Ohms 300W RMS X 2
RMS Power Per Channel 4 Ohms 600W RMS X 2
RMS Power in Bridge Mode N/A
Input Sensitivity 2V
Total Harmonic Distortion (THD) Better than .02% (normal listening is about .003%)
Frequency Response 10hZ to 35KHz
Input Impedance RCA 30K
Input Impedance XLR 45K
Voltage Gain for RCA Input Adjustable
Voltage Gain for XLR Input Adjustable
Power Requirements 110VAC or 230VAC
Dimensions (W x H x D) Inches 12" X 3.5" X 13"
Dimensions (W x H x D) Millimeters 304.8 X 89 X 330.2
Product Weight (lbs/kg) 20lbs
Shipping Weight (lbs/kg) 22lbs
Manufacturer Class D Audio

Product Reviews

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Reviewed by customer
08/15/2016 - 01:51:08 PM
EXCELLENT amplifier
I had been in the high end audio business for years, and have used ARC, Classe, HK, Rogue, Pass Aleph, NAD and other great amps, both tube and SS. I wanted a more powerful and lighter amplifier than my current Rogue all-tube amp (which is also a great-sounding amp), to drive my new Revel F208 speakers after selling my B&W 805 Nautilus bookshelves. After doing some on-line research, I saw that Audio Research, Mark Levinson and other top manufacturers (most of which I can't afford) were using class d circuits, so I felt I could disregard the earlier negative reviews of the class d circuitry. I researched the various class d amplifiers out there (Wired4Sound, Yamaha and Crown pro amps, etc.,), talked with some retailers, listened to some amps (hard to tell anything in a store, however) and, following some email discussions with Tom at Class D Audio, I decided to take a plunge and try the very reasonably priced Class D Audio 470C (Tom made two monoblocks for me).

When they arrived, I noted that the construction and "feel" of the amps were quite good. I hooked them up and was somewhat disappointed in the immediate bass response (I called it a little "thin"). Tom recommended letting the amps burn in a while, which I understood. After perhaps a week leaving the amplifiers on with low-level signal, I was able to report to Tom that my dachshund was vibrating across the floor due to the bass (I often listen to music at high volume). Now that the amplifiers are fully burned in, I believe these are terrific amplifiers. They are dead quiet (no background hiss or other noise), have very smooth midrange and clear, tight top end -- not fatiguing or brittle. And they have seemingly endless power.

I have no hesitation recommending these Class D Audio amplifiers. I believe one would have to pay at least $4-5,000 to find a better performer.
Reviewed by customer
08/15/2016 - 01:50:23 PM
Best power amp I have had so far
Since I bought a pair of Pioneer S1-EX speakers, I have been looking for a power amplifier that was better capable in delivering real life dynamics than my Classé CAP-151. I am so glad that I tried the SDS-470C as it delivers excellent performance and outstanding value for the money. Still using my CAP-151 as a pre-amp driving the SDS-470C the sound has dramatically improved: the blackness of the backgrounds, the dynamics, the openness of the sound: all are really pulling me into the music. The amplifier is also much more quiet than other amps I have had in the past (Marantz PS-12, SR-12, Aragon 2005, Kenwood L-1000M, Classé CAP-151). I love this amplifier and I am really curious to learn what the upgraded PS will even more add to the sound. If you need a dynamic, powerfull and very musical open sounding amplifier: give this one a try!