#KRELL KSA 200S REVIEWS FULL#
#KRELL KSA 200S REVIEWS SERIES#

Complex circuitry is common, with unwanted, signal-related modulation effects sometimes apparent in the output waveform. The bias level is wound up according to the signal's current demand, with its minimum value carefully controlled to avoid classic class-B crossover distortion. Generally, the 'dynamic,' 'sliding-bias,' and 'Stasis' amplifier designs feature signal-controlled biasing of the output stages. Many 'dynamic' or pseudoвЂ“class-A designs do not feature true class-A operation for their output stages. Obviously, the class-A designation requires that the dynamic music envelope fits within a static, class-A current and voltage combination for a rated load impedance. How is a modern, high-performance, 'class-A' amplifier designed to have a low, 'green,' standby power consumption? An improvement of around 8вЂ“12% of sound quality with a $7500 amplifier is not something you lightly forego. However, once you've used a dedicated power line running back to the main circuit-breaker box, the improvement cannot be ignored. The KSA-200S certainly gets on with the job when plugged into almost any AC supply. The quality of the wall outlet also becomes a significant factor. Do not use a substitute for the Krell-supplied cord unless a genuinely better one is available. Using a high-capacity power cord helps with amplifiers like the KSA-200S. It's possible that some differences in amplifier sound quality could consequently arise in marginal situations. While this can be lethal when mishandled, it does have the advantage of halving the current values. In the UK, the supply voltage is double that in the US. (The peak current, drawn when the amplifier's power-supply rectifiers conduct, will actually be much higher.)

#KRELL KSA 200S REVIEWS FULL#

A KSA-200 in full song driving a tough loudspeaker load may well draw over 1kW from the wall, equivalent to 10A 'RMS' with US 110V supplies. While this rating will not result in a failure mode, it is rather close to the maximum needs of a high-power amplifier. Those IEC-type detachable power cords may be a convenience, but at best they're rated at 10A continuous. However, one area remains often neglected-the quality of the raw electrical power fed to the amplifier. Obviously the ancillary components, interconnects, and loudspeaker cables should be sufficiently neutral and transparent to allow the amplifier's performance to be heard. In this respect, and in the low-feedback philosophy, it's interesting to observe the convergence of solid-state and tube designs.ДЄs power amplifiers improve in performance quality, they make growing demands on the other components in the system. Five years ago, it would have been felt that these figures could well have been 20 times lower. A low-feedback design will generally produce higher distortion Krell has no qualms in revealing figures for full-power total harmonic content of 0.1% at 1kHz and 0.2вЂ“0.5% at 20kHz. As good-sounding modern amplifiers continue to demonstrate, the link between sound quality and low distortion figures measured in the lab with continuous tones is a tenuous one. This wasn't a specific design feature, but a byproduct of their inherently linear circuitry. Once upon a time, Krell power amplifiers claimed and achieved low distortion factors. It sounds best if it is left on for at least 24 hours so you should plan on having your electric bill go up.Early amplifier stages have fully regulated supplies, later ones distributed wide-bandwidth supply decoupling. Remember, the Krell is pure class A and drinks electricity like anything. The biggest problem you will encounter is lugging the beast around. You simply purchased another KSA and the factory would modify the two for mono (free of charge of course).

#KRELL KSA 200S REVIEWS SERIES#

The KMA series was a mono version of the KSA. If that kind of service still holds true than you have a winner. I was, and remain, in awe of what I consider the last of the great Krells. Not only did they fix it but also paid for the air freight (quite expensive for this behemoth) and returned it to me within one week. They knew immediately what the problem was (some sort of faulty switch I believe). My amp began to trip shut and I called Krell for repairs. The sound with my meticulously positioned pair of Apogee Duettas made grown men cry. It was without a doubt one of the best amps I have ever owned.

Krell ksa 200s reviews