Purchase the 2 x 500 Watt RMS eAR Two stereo power amplifier to a fraction of the cost directly from the factory.

CLICK HERE to download a pdf file of the HIGHfidelity magazine eAR Two review.

New eAR Two MK4 with WBT connectors

July 2009: A new re-design of eAR Two has been made. Now it is easy to access connectors. eAR Two MK4 is available in 3 different finishes: Soft coated matt black, glassy shining and matt brushed steel.

Description and specifications of the old eAR Two MK1

What are the differences compared to all other amplifiers?
Pulse Modulation Amplifiers are also called Digital amplifiers and Switching Amplifiers, because digital pulses control the power conversion, instead of an analogue signal. Compared to all other known amplifiers, the eAR power amplifiers have infinitely more benefits. We will just mention a few benefits:

Excellent sound quality
Compared to all other switching or digital amplifiers, the eAR amplifier doesn't have a single touch of 'digital' sound, but the sound is very much natural analogue with great details and will give your speakers a tight and extremely fast bass; a more detailed soundstage than you have ever heard before, and an extremely dynamic sound. According to High-End reviewers: Best sounding amplifier of all amplifiers. Excellent sound quality means that the eAR amplifiers are truly capable of audiophile-grade audio performance, as has been demonstrated in comparative listening A/B tests against several high-end audiophile amplifiers.

Low power consumption
The eAR Amplifier output stage has an efficiency of 93% and it never runs hot. Let us put it in this way: The eAR Amplifier power conversion is the most precise way to perform highly efficient amplification. The eAR amplifier uses a technology, which will perform far better and be much more precise than any other technology. The unit needs only a relatively small power supply. This results in a very strong reduction in cooling requirements. The transformers, even compared to "normal" amplifiers are completey oversized. The power consumption of a "normal" high-end amplifier could easily exceed 200 watts in stand-by, with no music played! On eAR the power consumption will not exceed 20 watts! One of the benefits is a much lower electricity bill!

Based on ICEpower® technology.
The technology is groundbreaking and unique. ICEpower® is the industry standard for Switching Amplifiers, used by Jeff Rowland (High-End power amplifiers), Martin Logan (active loudspeakers), Bang & Olufsen (active loudspeakers), Sanyo (consumer power amplifiers), Philips (professional systems), just to mention a few. With its built-in proprietary feedback system, the sound quality is in no way comparable with existing switching amplifiers. The benefit is in short: Reliability, stability and of course the highest possible sound quality. As it is being used all over the World, it is your assurance of proven technology that just works.

(Acoustic Reality from Denmark was the first company in the world to introduce a separate power amplifier with the ICEpower® technology to the High-End market. Today Acoustic Reality and the Jeff Rowland design group from the USA are companies, that are manufacturing separate High-End power amplifiers with power ratings up to 300 Watts into an 8 ohm load with the ICEpower technology, both companies are using 100% equal ICEpower® output stages, but the power supply, input filters and output filters are different.)

Compact design
Since the amplifier unit is very, very small, but from a power-rating point of view a monster, the signal path in total is extremely short. Even given the fact that the amplifier is very compact, with the eAR Two it is possible to deliver up to 2 x 600 watts. That gives you enough power for even the most difficult speaker load, and the highest volume setting. The design is compact without sacrificing, or compromising the quality of the audiophile sound. As the amplifier only measures 38 x 28 x 12 cm, it is small, because of the fact that no cooling or huge power supply is necessary. The benefit is a very compact unit. The best-known, High-End amplifiers from Mark Levinson and Krell, are very large, in most cases approximately 45 x 30 x 70 cm or more, and weigh 150 lbs. Bigger and more weighty is not necessary the same as "better".
The eAR power amplifier does not contain any chips to do the modulation, but is built with active and passive high quality components.

No power supply noise
Extremely high Power Supply Rejection Ratio (PSRR). The advantage, compared to other digital amplifiers on the market is that noise from the power supply will be muted at least 60 dB. Power supply noise is therefore no longer an issue. The benefit is a more stable soundstage, more delicate sound, and much more relaxed performance of strings - just to mention a few. The power amplifier by itself is totally quiet, as there is no cooling fan or other cooling devices normally implemented in huge amplifier designs, just to prevent them for running too hot…..

No cross-over distortion
As the amplifier does not have any problems with noisy cross-over distortion, which all other analog amplifiers have, the distortion rating is very, very low, and is not dependent on the listening level. The benefit is that you will always have clean and very dynamic sound, the result of a THD + N on typical 0.006%. Indeed very low.

No InterModulation distortion
Intermodulation distortion is when two or more different input frequencies interact to produce additional frequencies in the output. Compared to for example Solid State or Tube amplifiers the InterModulation Distortion of the eAR power amplifiers is the lowest you have ever heard. The benefit is an amplifier that is able to produce very complex music with the finest details, even on very low volume levels... on all volume levels.

Quiet amplifier
The noise level of the amplifier is very low. In fact, the dynamic range (Aweighted) is typically 117dB. The benefit is an amplifier, which is almost totally free from noise on all volume levels, even very low levels.

The fastest transients
Because the eAR power amplifiers are using ICEpower® technology they are able to produce the fastest transients of any power amplifiers (the eAR power amplifiers have very low harmonic distortion and are almost without InterModulation distortion). The benefit is an amplifier that is able to produce very fast and dynamic music with any volume level.

Specifications of eAR Two MK1

The output impedance is extremely low, far lower than any amplifier using another technology and it is properly the lowest in the World. It means a far higher damping factor than any Solid State and tube amplifier.

The dynamic range of the A-series is also extremely high and is truly high-end: 117dB.
Compared to for example the dynamic range of Super-Audio-CD (SACD) players: 108dB
Check out solid state amplifiers and you may see it is uncommon to see amplifiers with a dynamic range better than 100dB.

The distortion of the eAR Two is extremely low, just 0.009% when playing with 100 WATT RMS.

eAR Two power amplifier	2-channel Power Amplifier with ICEpower® Technology and Acoustic Reality's analog power supply with huge Toroidal Transformer.
Performance level	The giant killer that resets the standard for all power amplifiers in the world.
Max. power output (RMS)	2 x 250W / 8 ohm, 2 x 500W / 4 ohm
Power stage efficiency	> 93%, 200W / 8 ohm
Peak output current	>80A (peak power into 0.6 ohm = 5500 Watt)
Output impedance	5mΩ @ 1kHz
Dynamic range (A-weighted)	>117dB
THD+N	< 0.009% 100W @ 8 ohm
Linearity	10Hz - 20kHz: +- 0,2dB
Bandwidth	5Hz - 80kHz
Input sensitivity (full output)	2V RMS
Inputs	2 x single-ended RCA inputs, one each channel (XLR is not standard)
Outputs	A pair of touch proof SPEAKON, one to each channel
Dimensions (WxHxD)	380x130x280 mm
Shipping weight	12kg

All features and data refer to specific type numbers. Other variants are available. Subject to change without notice.


eAR Two stereo power amplifier
Aiming to meet the uncompromising expectations of our users all over the world, we continuously strive to develop and improve the well-known build quality. This is why the internal build quality of the eAR power amplifiers has been improved. Further, the connector cave to the eAR power amplifiers has been improved. All connectors of the new connector cave have been re-arranged. It is now easier to access the connectors. All interconnects may have large size too.

The eAR amplifiers can easy handle a load of only 2 ohm or even 1 ohm electrostatic speakers (verified too), which means all type of loudspeakers can be used.

Adjustments and maintenance
Remove finger prints with soft cloth. A spray with stainless steel cleaner can be used to remove finger prints too. There is no further adjustments or maintenance of eAR amplifiers.

Safety and EMI
The eAR amplifiers are CE marked. All international EMC/EMI requirements are meet too.
To meet all international safety and therefore to be able to sell the eAR Two power amplifier in countries all over the world we have chosen to use touch proof SPEAKON loudspeaker connectors. SPEAKON is used in all major recording studios.

CLICK HERE to download a pdf file of how to assemble and attach the professional SPEAKON connectors.