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In Reply to: RE: So ... an other vote for Hypex N-Core posted by Feanor on September 05, 2016 at 11:16:23
Yes. And it's the first amp I've ever heard of that can sense and adjust to the A/C voltage input.
Follow Ups:
Even EBAY Chi-Fi SMPS units self adjust / accomodate 120 or 240 volts.
Does anyone move regularly between 120 and 240? This probably will be used once. Why add the cost and complexity? Some amps have a switch. Too complicated?
And pretty much worthless thread. Why are you advertising for them? Have you any opinion on how they sound? Do we need to know there is yet another amplifier "manufacturer" that uses another company's technology, adds a couple doodads, and then offers it for sale under their own label?
Peace,
Tom E
berate is 8 and benign is 9
Does anyone move regularly between 120 and 240?
I did a few times. If you move more than once or twice you'll quickly get annoyed at having to re-buy so many basic household items like vacuums, hair dryers, kettles, printers, fans, etc.
The only audio component I had with auto-sensing power supply was a Linn DS and I really appreciated that. My Simaudio amp was pretty easy to convert back and forth. I did it several times myself but the last time all I had on hand was a pretty low grade soldering iron and I overheated the board and ruined the relay for the soft start circuit. I also had a Grace 901 DAC/headphone amp with a voltage switch, but I found out after I had moved the first time that it wouldn't work on 240V. There was a bad/open tranny winding but they must have let it out of the factory anyway since it was destined for a 120V market. That was very frustrating since switchable voltage was a selling point for me. And I had the reverse problem with a Sony Blu-Ray player I bought when I lived in Australia. But the Sony TV I bought along with it works fine on 120V. I've purchased step-up and step-down transformers and in my experience they do not perform well when driving a large linear power supply.
I've also done a lot of international business travel and I pretty much take for granted that any electronic device I would conceivably travel with has an auto-sensing SMPS. I fried a shaver once that didn't, and that was pretty annoying. And I had a computer that wouldn't charge on 100V in Japan.
Another big selling point of auto-sensing SMPSs on audio components is the ability to buy & sell to the worldwide market. I'm not a gear flipper, but I have bought and sold equipment and I've lost count of the number of times a potential overseas buyer has asked me about voltage conversion. And I'm pretty sure that some manufacturers and/or importers rely on voltage incompatibility to maintain different pricing in different markets.
Yes. And it's the first amp I've ever heard of that can sense and adjust to the A/C voltage input.
Which specific amp(s) are you talking about? As best I can tell none of the ATI or Theta amps will sense AC input and automatically accommodate for 120 or 220 operation, but I could be wrong.
Edits: 09/05/16
I thought that is what this means from the original post:
" These AT5XXNC series amplifiers break new ground in other ways. They are the first ATI amplifiers to use micro-processor control for turn-on delay and feature automatic AC power recognition and configuration. The amplifiers not only recognize whether they are hooked up to 117V or 230V nominal power, they automatically self-configure. The amplifiers also incorporate a new and novel "sleep" circuit "
I guess I should have read the entire press release. That's pretty unique. Thanks.
That feature is ordinary these days. Typically, more costly to less ordinary in a linear PS.
Agree, it's very common for switch mode power supplies to accommodate a wide range of input voltage and frequency. But the press release says these amps use linear power supplies. I wonder if those might be linear power supplies AFTER the input switch mode power supply as you may have hinted.
If your using class D amp technology, then a focus EMC is already a must. Why not just use SMPS given its inherit advantages when EMC is well designed? Seems like a linear PS at that point may be more about marketing and less about system prrformance.
Agree again. Audiophile mentality, and marketing to audiophiles:- Linear Power Supply Good.
- Switching Power Supply Bad.The real answer is, 'it depends'.
Edits: 09/07/16
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