Class D amplifiers. What's the future look like?


I have a number of amplifiers: Luxman C900U, Bryston 4BSST2, Audio Research VSI 60 Integrated, NAD C298 and some other less noteworthy units. As I swap them in and out of my main system, I've come to the conclusion my very modest NAD C298 is about all I really need. Granted if I had extremely hard to drive speakers, I might be better with the Bryston or Luxman, but driving my Harbeth 40.2 speakers, the NAD is just fine. 

I thought a while ago that class D would quickly overtake amplifier design type mainly due to profit margin which I think would be much greater than A/B and tube. I'm not saying the other design styles would go away, just that D would be the most common style. 

Clearly my prediction is not panning out, at least in the mid and high-end audio world and I'm wondering why? It seems companies such as Bryston, Luxman, McIntosh, Hegel and so many others are sticking by A/B. I'm no "golden ears" guy, but is the perceived sound issue(weather real or imaginary) still holding D back? Maybe my assumption of profit margin is not correct? Maybe the amplifier manufacturers are experimenting with D, but keeping tight lipped until release? Perhaps brand loyalists don't want change similar to what happened with "new coke". What else am I missing?

 

128x12861falcon
  1. Sound Quality Perception: Audiophiles are often very discerning about sound quality. While Class D amplifiers have improved significantly, some enthusiasts may still perceive differences in sound quality compared to traditional amplifiers. These differences may be real or perceived, and audiophile preferences often lean towards the warmth and character that tubes or Class A/B amplifiers can provide.

  2. Brand Reputation and Loyalty: Established high-end audio manufacturers, such as Bryston, Luxman, McIntosh, and others, have built strong reputations based on their Class A/B and tube amplifier designs. Brand loyalists may resist change and prefer to stick with what they know and trust, even if Class D technology has advantages.

  3. Market Segmentation: High-end audio is a niche market, and the demands and expectations of audiophiles can be different from mainstream consumers. Some audiophiles appreciate the traditional craftsmanship and aesthetics of tube or Class A/B amplifiers, which may not be achievable with Class D designs.

  4. R&D and Innovation: Manufacturers may indeed be experimenting with Class D technology, but the development cycle for high-end audio equipment can be lengthy. It takes time to perfect new designs, ensure they meet audiophile standards, and maintain the desired sonic characteristics. Manufacturers may also want to preserve the mystique and allure of traditional amplifiers.

  5. Profit Margins: While Class D amplifiers can be cost-effective and offer good efficiency, profit margins in the high-end audio market may not be the primary driving factor for manufacturers. These companies often prioritize craftsmanship, high-quality components, and sound performance over cost-cutting measures.

  6. Speaker Compatibility: As you mentioned, the choice of amplifier can also depend on the type of speakers used. Some speakers may benefit more from the characteristics of Class A/B or tube amplifiers, especially if they are less efficient or have unique impedance curves.

It's important to note that Class D amplifiers are widely used in professional audio and consumer electronics, where efficiency and power output are crucial. They have made significant inroads in these markets.

While Class D technology may continue to advance and gain acceptance in the high-end audio world, it's likely that traditional amplifier designs will coexist for the foreseeable future, catering to different preferences and market segments. Manufacturers may continue to offer a variety of amplifier options to meet the diverse demands of audiophiles.

They will go the way of cd players, in ten years no one will need them. Ralph and others perhaps have some time to cash in. He does not prefer his class D to his and many others tube amps. He won't fool me.

@inna

He does not prefer his class D to his and many others tube amps. He won’t fool me.

You may be wrong with that comment. I believe Ralph has stated that he is using his new GaN class D amplifiers as his main/primary choice. Also if I am not mistaken, his primary speakers are very high efficient/sensitivity Classic Audio  horn speakers.

Charles

Granted if I had extremely hard to drive speakers
 

Some Class D manufacturers claim 2 Ohm stable. Besides, how many folks have speakers that dip to 2 or 1 Ohm for considerably amounts of time. I want to try one with my ears, and mind open.

If he really prefers his class D amps to tube amps then he fools himself.

In any case, he is on this forum for business purposes, whatever he says - remember that.