The Audio Note (UK) Empress Mono Power Amplifiers are indeed renowned for their exceptional performance and utilization of high-quality components. These amplifiers employ a Pure Class A Parallel Single Ended (PPSSE) configuration, which is known for its ability to deliver a unique and captivating sonic experience. Utilizing a pair of 2A3 power triode valves per channel, known for its low power output, typically operating in the range of a few watts, are highly regarded in the audio community for their remarkable sound reproduction characteristics. This low power output allows the amplifiers to operate in Class A, where the entire audio signal is amplified by the valves. 

The use of Class A amplification, combined with the specific characteristics of the 2A3 valves, contributes to the distinctive sound signature and performance of these amplifiers, which are specifically engineered for sonic performance committing to Audio Note (UK) Level 3 criteria. Class A amplification is known for its low distortion and high linearity, resulting in a smooth, detailed, and engaging audio reproduction.

The Silver version incorporates several enhancements to further elevate the performance. These additions contribute to refining the sound quality and overall audio reproduction. First, its use of high quality Audio Note 1 Watt Tantalum Film Resistors known for their precision and stability. By incorporating these resistors into the Silver version of the Empress amplifiers, Audio Note aims to minimize any potential signal degradation and further enhance the accuracy of the audio reproduction. Also, the inclusion of IHiB C-Core Output Transformers is another notable enhancement in the Silver version. The IHiB C-core design is known for its excellent magnetic properties, which can result in improved frequency response, lower distortion, and enhanced overall performance. 

The Silver Signature version of the Empress amplifiers elevates even further the performance and refine the sonic characteristics of the standard Empress model. First, by adding Audio Note 2 Watt Tantalum Film Resistors known for their high precision, stability, and low noise characteristics. By utilizing these resistors, the Silver Signature version aims to further minimize signal degradation and improve the accuracy of the audio reproduction. In addition, the use of SHiB C-core Output Transformers, which are designed to provide enhanced magnetic properties and improved performance compared to standard output transformers. The SHiB C-core design aims to reduce distortion, improve frequency response, and deliver a more detailed and refined sound. The implementation of higher wattage resistors and advanced output transformers reflects Audio Note’s commitment to achieving the highest level of audio quality and fidelity.