4/30/2023 0 Comments Element 118![]() ![]() It was small and efficient, but the problem was the sound, which was the complete opposite of the MC2102 tube amps. At half the size of a normal shoebox, the NuForce pumps out a whopping 300W at 4 ohms, with a damping factor of over 4000 at any load. I vividly remember my demo of the NuForce Ref 9 Class D amplifier in 2006, back when my system was powered by a pair of McIntosh Labs 2012s. Personally, I belong to the camp of individuals who remain rather skeptical of Class D Amplifiers. ![]() As a remedy, some have resorted to using high doses of “negative feedback”, others have resorted to “bridging amplifiers”, but each will bring another set of challenges into the equation, namely loss of detail and possibly adding “graininess” to the sound. ![]() However, MOSFETs have relatively large capacitance hence they need to charge and discharge this can delay the switching process, causing distortions. Class D amps require the use of MOSFETs that rapidly switch back and forth between the power supplies to produce output pulses. Despite their efficiency, there are several limiting factors which can hamper Class D performance. Yet, Class D amplifiers have always been plauged with controversies amongst audiophiles, at least in their early days. They are also commonly found in active speakers or subwoofers. For these reasons, Class D amps are routinely found in the professional arena such as concerts, stadiums or PA systems. This difference gives Class D significant advantages as these amps generate less heat, and require much less space. Theoretically, Class D circuits are capable of achieving 90-98% efficiency, whereas Class B operates at approximately 75% and Class A at 20-50%. Back of the Class?Įver since their introduction in 1958, Class D amplifiers have been loved by many for their efficiency versus traditional Class A, AB or B circuitries. In this review, Rick takes a good look at the Merrill Audio Christine preamplifier and the Merrill Audio Element 118 monoblock amplifiers. ![]()
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