Well... no one, since it's no longer made.
Some folks do still use film, though -- just as some folks do still use vacuum tubes.
Well, at least film has higher DR.
Well... no one, since it's no longer made.
Some folks do still use film, though -- just as some folks do still use vacuum tubes.
Don't tell NAD.Seems like they're a general improvement over traditional single-rail Class AB as well as Class G in terms of both efficiency and performance, but they never really seem to have caught on for whatever reason outside of some live sound sub applications. Any reason they seem to be less-than-common outside of the AHB2 and some BASH plate amps beyond "well Class D exists and is good enough"?
Good to see for sure...I realised that, but I think we should be close. A NC502MP based amp can be found for about 800€, so the used price should be as low as 500€.
A NC252MP based amp should be in the target range.
EDIT: in fact, this one was sold for about 400€ https://www.canuckaudiomart.com/details/649669840-vtv-amplifier-hypex-ncore-nc252mp-stereo-amp/
Well... no one, since it's no longer made.
Some folks do still use film, though -- just as some folks do still use vacuum tubes.
Good to see for sure...
Doubtful that there are any available here in the UK, or Europe at 400 Euros tho unfortunately...
...I am going to get out of this but 30 years ago there were no good class D amps...
...methinks 30 years from now there will be...
...as noted above I did look at a well regarded D class amp and then didn't buy it...
Many people consider this to be one of the best power amp ever made.Don't tell NAD.
Actually there are still quite a few out there.
Class D is probably mostly, if you now want to, dare, stick your head in that wasp nest and bring it up, about the audibility regarding distortion in the higher frequencies. Plus something that I see appearing all the time regarding class d, that is, how to measure and interpret the results (broadband regarding measuring equipment).So we have a repetition again.
Classification goes up to Class G, the H inherits class G characteristics with what ever they added (hybrid). They are DC and less efficient than traditional class D. Class D did conquered the world long time ago (all the small amplifiers in numerous things) for the price and whose never meant to be great. Simplicity of class AB will continue to keep it live probably for ever (ever more so in critical applications).
Many people consider this to be one of the best power amp ever made.
I have read that many have said. Depends of course on what you compare with, but it was (is) a really good power amp.
Class D, I think.
https://www.hifiengine.com/manual_library/nad/208.shtml
Sorry I wrote wrong. I know NAD 208 is not a Class D based amp.No, that little time bomb (NAD208) is neither Class D or H, so not really relevant for this discussion.
D is a switching amp basically a PWM type deal, can be very efficient, like 95%
G is a rail voltage jumper with two or more fixed rail voltages. Properly implemented it improves greatly on efficiency compared to A/B. Nowhere near D though.
H is variable Rail where the rail voltage is tracking input signal. A bit complex considered the relatively small gain in efficency compared to the much simpler G
In order for something class D to be 95% efficient it needs to have equally efficient AC/DC switching power supply which al do possible never whose a case with class D amps (you would get 85% efficiency regular standard switching power supply).No, that little time bomb (NAD208) is neither Class D or H, so not really relevant for this discussion.
D is a switching amp basically a PWM type deal, can be very efficient, like 95%
G is a rail voltage jumper with two or more fixed rail voltages. Properly implemented it improves greatly on efficiency compared to A/B. Nowhere near D though.
H is variable Rail where the rail voltage is tracking input signal. A bit complex considered the relatively small gain in efficency compared to the much simpler G
Class G based amplifier.Clas G-H got it's usage secured in but not for power amplifier (where it likely will stay in the exotic category) but in small integrated power amplifiers for hedaphones/preamplifiers and such (and not for a high gain but lo gain with high SNR).
For example the QC smartphone SoC's (from 5~6 years back including midrange ones) have one but it's put to be used as class D on default or CS43131's amp.
Maybe, but I had this fresh in Memory and it implies that at least 90+ is very much doable. (but I can agree that the 98% numbers shown is questionable)In order for something class D to be 95% efficient it needs to have equally efficient AC/DC switching power supply which although possible never was a case with class D amps (you would get 85% efficiency regular standard switching power supply).
Well if you pair the class D IC with very high grade PSU (best server grade ones have efficiency of 97% when pushed hard 80+%) you can land with 95~96% (again when pushed hard over 80%) efficiency but no one will do that (at least not yet, maybe one day as we see today such PSU [GaN phone chargers] are getting into consumer electronics and pricing of such getting down) as its a bit of a looney tune to pair an 5$ IC with 500$ PSU.Maybe, but I had this fresh in Memory and it implies that at least 90+ is very much doable. (but I can agree that the 98% numbers shown is questionable)
https://www.avsforum.com/threads/measuring-amplifiers.1780914/page-67#post-54694904
(took the liberty to edit the above quote for clarification, i hope i got it right )