Audiophile speakers like electrostats and difficult to drive high performance towers perform best with ultra-clean high power amps that can handle low impedance loads. If you’ve been dreaming about hearing the uncompressed dynamic range of live concerts on Blu-ray and Hi Res Audio downloads of studio master recordings, you’re going to need more power to take you there. Remember, to hear clean un-clipped sound 3 dB louder than the amp you have now, you’ll need to double your current power output.
Now is the time increase your amp’s output power with the 90% efficient Essence DPA-440 Class D Digital Power Amp. Better sound, better economics, and an eco-friendly design for modern thinking people.
Clean Class D Power For Hi Res Audio
Why are Class A and AB amps so expensive? The simple truth is,they convert electricity into watts with less efficiency. The lower the efficiency, the more heat the amp produces. The chart below vividly explains; Class A amps are 20% efficient, Class AB amps are 50% efficient. Both designs create more heat than power to drive your speakers. Since heat is the enemy of solid state devices, these amps must employ ways to get rid of it.
Audiophiles hate fans because they are noisy so manufacturers of Class A and AB amps are forced to use a lot of heat sink surface area to pull the heat away from the amp. The surface area requirement leads to a huge chassis to house the heat sinks and transformer. The cost of the materials to make the chassis to house all this heat sink is by far the biggest factor in why these amps cost so much today, its the packaging, not the transistors or circuit boards. Class D amps are 90% efficient so they dont need as much heat sink or the big chassis to house them, leading to lower costs for consumers per watt. Further, Class D amps now sound better than the old fashioned Class A and AB amps we grew up with, they have lower distortion and noise and handle difficult loads better, with more slam and an ease of operation as they produce prodigious output for a lot less money.
Hi Res Audio brings us all the emotion of a live performance at home as never before with uncompressed 24/96-192K Blu-ray Concerts, Pure Audio Discs, SACD/DVD-A, and Hi Res Downloads for the most unveiled sound and transparency in audio history. Class D is swiftly taking over the audiophile market, the only people still complaining about how they sound are the manufacturers who still make the Class A vacuum tube and Class AB solid state amps from the last century. In a world getting hotter by the year, its really past the time to indulge in fantasies and rationalizations about which type of amp class sounds best.
With Class D you get 66% more output power for 1/3rd the price and lower your audio system’s power consumption by more than 50%, lowering your electricity bill as well. In the chart below, note that the Class A amps use up the most electricity because they are on at full output all the time, yet 80% of that electricity is thrown away as heat.
|Comparison of Amp Classes||Class A||Class AB||Class D|
|Electricity/Watts to drive a 200 watt Stereo Amp To Full Output||800||400||240|
That leads us to the Essence™ DPA-440 Class D Digital Audio Power Amp. It’s easy to find amps that can excel in one or two parameters but the DPA-440 is an amp that does everything well. With its wide open-loop bandwidth, extremely low-phase shift, almost non-existent noise, harmonic and intermodulation distortion independent of load, high current capability, low output impedance uniformly at all audible frequencies-it all adds up to incredible performance.
Modern Digital Amplification
The Essence DPA-440 uses the latest Class D topology to provide a highly efficient and nearly ideal amplifier with distortion below measurement, ultra-high damping factor, and unconditional stability with any speaker. Tight, detailed sound with amazing control and transparency delivers the best performance available.
The all-discrete driver and output stage have lower open-loop THD as well as lower idling losses, normally conflicting requirements with conventional IC driver circuitry.This is added to the DPA-440’s already amazing characteristics of load invariance and high current capability, common characteristics of great-sounding amplifiers.
By using the latest generation parts and thinking, the DPA-440 offers a minimum of 220W per channel @ 4 Ohms (Essence™ Electrostatic speakers are 4 ohm) with amazing reserves of dynamic power at lower impedances. The DPA-440 is capable of up to 400 watts dynamic power per channel @ 2 ohms. It can effortlessly power any loudspeaker to live performance levels with amazing efficiency and low power consumption.
Clean and Dynamic
The performance of the entire signal path is critically dependent on the power supply; in this case a well regulated switch mode design with 90% efficiency. This allows maximum dynamic power, very high current yet with very low distortion. Secondary supplies are individually regulated and decoupled at each op amp for lowest possible noise and maximum dynamic range. The DPA-440 is protected against thermal overload and against being over-driven, which is almost impossible.
When combined with the Essence Electrostats and the HDACC Upsampling DAC Preamp, the system performance reaches the highest level of clarity and resolution attainable today, at a price that’s sure to make heads spin. The amp is our latest disruptive innovation.
|Manufacturers:||Essence DPA-440||Benchmark AHB2||Bel Canto Ref 150S||CI Audio E∙200S||NAD M22|
|FTC* Rated Output RMS Watts Per Channel|
|Signal-to-Noise Ratio||< -100 dB||< -113 dB||<-110 dB||Not Rated||<-100 dB|
|Peak Output Current||40 amps||18 amps||Not Rated||Not Rated||50 amps|
|Damping Factor||>1000||Not Rated||>1000||Not Rated||>800|
|Frequency Response||±.2 dB 20 Hz to 25 KHz||±.023@20Hz/-.32@20KHz||± 3dB 1.5 Hz – 90 KHz @4Ω||Not Rated||3Hz – 30kHz (ref. -3dB)|
|Input Impedance: RCA/XLR||30KΩ / 47KΩ||50KΩ / 1MΩ||100KΩ / 200KΩ||100KΩ||17 Ω / 200 Ω|
|Input Sensitivity||1.6v RMS||2v RMS||1.1v RMS||2.0v RMS||1.6v|
|Voltage Gain**||30 dB||Not Rated||27 dB||26 dB||29 dB|
|Idle Power||9w||Not Rated||9.5w||32 w||40w|
|Dimensions||12″ W x 3.5″ H x 12.5″ D||11″ W x 3.8″ H x 9.34″ D||8.5″ W x 3.5″ H x 12″ D||14″ w x 2.75″ H x 10″ D||17″ W x 4″ H x 15″ D|
|Unit Weight||18 lbs||12.5 lbs||13 lbs / 6.5Kg||8.5 lbs||19.6 lbs|
|Shipping Weight||21 lbs||15 lbs||16 lbs||10 lbs||23 lbs|
|Dynamic Headroom||3 dB||Not Rated||Not Rated||Not Rated||3 dB|
|Warranty||3 Years||1 year||2 years||5 years||2 years|
|*Continuous Output Power as per FTC Rule|