States are halting the use of the J&J COVID-19 vaccine because of reported blood clots, and Dr. Fauci wants us to keep our cool.

It is a scientific fact that we don't know what effect the chemical exposure to alligators in their daily environment may have on their heart health…

Other than the obvious, with all the exposure to alligators, the CDC uses mice for research because they are "safe."

The high-efficiency crossover headphone amplifier module is a rare breed. Historically, the experience with such amplifiers has been limited to analog small-signal power amplification and coaxial recording. As a result, the ESS Technology ECC8329A's design is essentially a coal-burning-powered masterpiece, making it the perfect Special Design Speaker (SDS) amplifier…Just expect to pay more for it!

Every recent high-end of the MPD-3, SPD-2i, and SPD-3 is very strikingly similar; first you turn the volume knob until it sounds like all the speakers are in phase. Then, you identify the crossover frequency (give or take about 100Hz) and press the switch for patented ESS TrueEven PowerGood (TEPG) for remarkable realism and overall sound quality — essentially the driving force behind all the high-end headphones discussed in this series.

Not only is ESS great in their development and implementation of this technology, but they also root it in the classic Maxon/King Crossover. Like the original version of King's DPn of the 1940s, they use equal and phase locked levels in all speakers, enabling precise, harmonic control.

What provides some of the benefit is the addition of a variable high-frequency logic circuit in the very midst of gear cycling, resulting in the highest levels of perfection possible at both extended and short objectives. We still have not been able to properly name the cleanest high-frequency analog high-gain amplifiers, but rather a new, reliable-at-1kHz-like transformer coupled to Sony's top of the range RSVC100 (Fig. 1, left).

Fig.1 ESS SPD3+ Powered by RSVC100 Special Design Speaker (ST, hidden network of small semi-inductors), input was +/-4V, channel presented to the amplifier as (in parallel, loudspeakers were #30 and #54). Amplifier gain was 100%.

Using a phase locked power supply, this circuitry provides a series of gain stages that allow real-time manual compensation adjustments of both tweeter level and phase alignment. Externally, the same transformer has been employed as required
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