So you state that my amps are fake Class A. So what? They sound fabulous in my system and other's systems. So you state that Riviera, or Sugden are superior amps because their Class A or ? I owned several Class A amps with the last being EAR 890s and they are grossly inferior, but they're so hot that they raised the temperature 3 to 4 degrees in my room. I also have and used Class A/B amps for 50+ years. The finest system I every heard were using Class A/B tube amps (VAC 450s in a $1 to $1.5 million system).
Greg Weaver states "that as good as the Westminster Lab combo is, please don't make the mistake of thinking they are in the same strata as the Stern/Heisenberg combo, products that, in my experience, simply set the bar for the overall excellence of performance in electronics." My comment was those Heisenberg's have enormous power output but weigh 145 lbs. each, 4 times my Westminster Labs REI and 5 times the power output as well as $105,000 or 3 times the price of REIs.
So, are you comfortable stating that the Riviera and Sugden amps are equal or superior to the Stern/Heisenberg combo?
I hope you know that amps should be matched with speakers and no one amp works with all speakers and vice versa. Also, a listeners' hearing and consideration for music/sonic preferences should be considered.
I thought the discussion was concerning the Vitus amps. What is your opinion concerning those compared to the Riviera and Sugden? Have you heard Vitus amps?
One of our local stereo club members had the "Stern/Heisenberg combo" that he paired with his Zellaton Stage speakers. The Zellatons are an excellent speaker - btw. The Audionet combo, not so much - to our groups ears. We found them falling short of their touted attributes. The member in question bought the CH M10 & L10 combo to replace his Audionet electronics, which has render a significant improvement in performance across the audio and enjoyment spectrums. By comparison the Audionoet gear sounds flat, artificially precise (e.g. brittle) and un-engaging.
My point is, there is a lot of hype-over-reality when it comes to some manufacturer's claims and the cult-like take up by their product buyers. One thing this hobby has taught us - there's no straight line correlation between price and perfection. So called "strata" should be solely performance based. Cost of membership considerations should be secondary at best.
I prefer real-world and real-system feedback from informed and passionate owners over the magazine-chaser and purveyor crowds. That's why I like WBF member feedback - for the most part. On occasion, the curmudgeonly antagonists weigh-in making bold and unfounded assertions under the guise of feigned expertise. That element has overtaken forums on most of the other mainstream audio-chat sites causing the more thoughtful, respectful and sincerely informed contributors to seek the comfort and civility of WBF.
As a retired general counsel of a multi-billion dollar corporation, I admired and recognized Treitz3's prudent and strategic refereeing to distance WBF from any guilt-by-association defamation exposure. Well done!
That brings me to the statement; "your Amps are NOT Class A amps..." in the context of Westminster Labs. As with Class B, AB, C, D and E amplifiers, there are many ways to skin the Class A cat (my apologizes to cat owners). The first step in the evolution of Class A amplification was replacing SET tubes with output stage transistors biased for Class-A operation. The latest evolutionary step developed by, Angus Leung, is the development of the "iBIAS" circuit, which "permits real-time bias adjustment and optimization depending on the amplifier’s load and input signal level." In both a conventional biased circuit and Leung's redesign, 100% of the input signal is used and a single output device/circuit manages both sides of the waveform. So, in my books it qualifies as Class A.
True, Leung's latest amplifier doesn't compete in the same weight class as a 1956 Buick. Apparently (and I say apparently, because I don't own the Rei), it doesn't double as a breakfast skillet on a gas stove either. However, those attributes don't define whether or not WestminsterLab's Rei is a Class A amplifier. According to a couple of voices in this post, a really good Class A amplifier should have the ability to "burn a GD hole in your floor" and "weigh a ton" (figuratively). One of our other audio club members has a few stereo systems, including one with a Gryphon Essence stereo amp driving Joesph Graphene Audio Pearls. It delivers 55W/side into an 8 ohm load in pure Class A.
Now, here's the surprise for me (beyond its meat-on-the-tomahawk delivery), that Gryphon Class A runs warm to the touch on the top of the case. So, at the cost of rattling the cages of the doubting curmudgeons, it sounds wonderful even though the Essence weighs 57Kg vs. 32Kg for both Rei monos.
I'm grateful for innovation in audio and I admire inventors and designers who question and challenge conventional parameters. Otherwise, I would be listening to my old JBL speakers driven by a Lloyds 8-track stereo. Thank you as well to my WBF colleagues who are willing to venture into uncharted territory and embrace and share your new experiences. Kudos my friends!