What a load, feedback inertia? What the heck is that? Sure, let’s see how you design a audio power amp with a few cm of propagation from in to output, impossible, unless it is done on a IC.Īnother design objective has been that the problem is not negative feedback per se but its inertia. I quote a blurb of the referenced link from initial post, below, imo a combination of BS and marketing hype. I'm not as sophisticated as John, new amp for me? an L-550AXII From SETs to Class D with more applications and flexibility than ever and yes, with extremely good sound (and I don't even mentioning speakers, sources and content). We have more options today than ever for everyone's taste. I think the main problem would be is that is make by robots and machines and sometimes firmware and chipsets.so component level work can be inviable for us weekend warriors in some instances. Newer commercial audio can be extremely good as well and some inexpensive, a lot of good stuff from small and big companies. And yes still have a bunch of vintage stuff around that I enjoy it a LOT and is better looking. I like those gallium nitride amps from orchard audio (superb), and the class D from purify, (dislike ICEmodules) even some cool chipset amps designs around that sounds great, very interesting stuff, and those Drock and meanwell SMPS are extremely good (and inexpensive). ![]() Talking about class D (not bad implemented stuff for cars), newer stuff and "fast" transistors. And without getting caught up in the ratrace of expensive oneupmanship and upgrade cycles.Ĭlick to expand.Look at you!! that would be an extraordinary (and excessive) set up I love it, what speakers would you get with those? Meanwhile, those of us running 30-60 year old gear, much of it from companies that no longer exist, will do our restorations and content ourselves in the knowledge that we have truly good gear we can honestly enjoy listening to. The high end part of the market will presumably continue to peddle and sell just enough blisteringly expensive stuff to keep themselves profitable, with customers who have enough to spend that they will never be satisfied, and so will continue upgrading in pursuit of aural utopia. So, that part of the market will continue to churn out crap - some of which may even sound fairly decent - that is destined for the landfill inside of 5 years. Modern consumer junk gets replaced regularly because it is cheaply made (even if not sold so cheaply) and is almost never worth the cost of repairing unless you can DIY. Despite that, the well monied continue to drop serious coin on new, boutique brand amps with enough regularity to keep such makers in business, as is their prerogative. Unlike vehicles and major appliances, there is little to wear out or break mechanically, and if not abused, the electronics will be solid until component drift starts to set in. I'm actually surprised there is still such a large market for new hifi, as a well made amp that one enjoys the sound of can last 20 years without the need for work or outright replacement. And Sansui contributed much to the leading edge of that field between 1975-1999, the benefits of which are still being enjoyed by companies copying their work even now. I've not owned or listened to any of them personally, but feedback from those who have is generally very postive.Īnyway, my overarching point is that there is nothing much new in the basic design of audio amplifier circuits and topologies, that doesn't build or borrow heavily on what has already been done decades ago. Sansui dabbled with them a number of times in the Alpha era, with what appear to be solid results. MOSFET amps are mature technology now, though still represent a minority of amps offered versus traditional output devices. That would give me great hesitancy to own one. These are said by their proponents to sound excellent, though original spec output devices are unobtainable by my understanding. The only other unusual amp technology of note that I can think of now was the brief run of VFET amps (all class AB so far I'm aware) and that was primarily a Sony offering, with some models made by JVC as well. They perform well enough for the job, but then I don't treat the car as a serious listening space, as I do the house. I've used a couple of Alpine class D amps in vehicles. The only newish, really different thing of note to come along since Sansui departed the scene is class D. Class A will always be an outlier, as it is expensive, inefficient, and thus has a limited appeal to a certain subset of audio fanatics. ![]() Of course, class AB will remain the prevalent basic amplifier type for some time to come, as it is capable of hitting the price to performance balance that is demanded by a mass market. Can't argue against the the thread title.
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