|
|
|
tadekj said:
Do you agree/disagree that D class amplifier should be a future for SACD so DSD recorded music can be transfer to let say 192/24 signal and digitally amplified?
Why would you need to transfer DSD to 192/24? You would have to convert the 192/24 back to PWM / DSD to get the signal digitally amplified.
|
|
|
Post by tadekj August 15, 2012 (32 of 48)
|
|
I am not sure power transistors inside D class amp can handle 2.8224 MHz (64Fs) sampling frequency.
I don't know. I would like to learn something here.
|
|
|
|
|
|
tadekj said:
I am not sure power transistors inside D class amp can handle 2.8224 MHz (64Fs) sampling frequency.
I don't know. I would like to learn something here.
Keeping purity of digital signal (from the recording to the amplification) is only possible in DSD domain as class D amps can operate at 64-256fs. There are no 192/24 amplifiers.
|
|
|
Post by Iain August 16, 2012 (34 of 48)
|
|
Polly Nomial said:
I think it's more that the version of HDMI it supports can accept DSD or that the DenonLink does or both.
It's down to dodgy technical writing at Denon UK. They must use same writers Amazon use. LOL!
American and Canadian Denon sites get it right. AVR-2313 and AVR-3313 will have DSD over HDMI support and the AVR-3313 will also have Denon Link HD and AL24 Plus Processing.
|
|
|
Post by tadekj August 16, 2012 (35 of 48)
|
|
So which way audiophiles should be going to process or don’t process DSD?
Analog preamplifiers + amplifiers
Digital amplifiers
Digital processors + amplifiers (digital or analog)
Receivers.
Computers for FLAC files
|
|
|
Post by Iain August 17, 2012 (36 of 48)
|
|
Iain said:
......
American and Canadian Denon sites get it right. AVR-2313 and AVR-3313 will have DSD over HDMI support and the AVR-3313 will also have Denon Link HD and AL24 Plus Processing.
I should have said "have" instead of "will have" as these models were recently released and are currently in production.
Sorry.
|
|
|
Post by stvnharr August 17, 2012 (37 of 48)
|
|
tadekj said:
Do you agree/disagree that D class amplifier should be a future for SACD so DSD recorded music can be transfer to let say 192/24 signal and digitally amplified?
I think you are a bit misinformed here. Class D amplifiers are analog switching amplifiers. You connect an analog signal to the amp, not a digital data stream.
|
|
|
Post by tadekj August 17, 2012 (38 of 48)
|
|
You might be right. Al of this very complicated.
I found this explanation on digital amp manufacturing side.
What is a Class-D amplifier?
The strict definition of a Class-D amplifier only requires that the output devices are used as switches. Fictitious class names that refer to switching amplifiers are actually referring to Class-D. Switching amplifiers are therefore Class-D amplifiers.
What is a "digital amplifier"?
Class-D amplifiers are often called "digital amplifiers". However, the "D" in Class-D doesn't stand for "digital", as is commonly thought. Switching amplifiers usually incorporate digital circuits (as in computers), so they can be thought of as "digital". There is controversy surrounding the definition of "digital amplifier" because it implies that the amplifier is made entirely of computer circuits, but this is not the case.
What are the types of digital amplifiers?
We divide digital amplifiers into two main categories, Analog Class-D and Digital Class-D. We refer to Class-D amplifiers with analog inputs as Analog Class-D and Class-D amplifiers with digital inputs as Digital Class-D.
|
|
|
Post by stvnharr August 17, 2012 (39 of 48)
|
|
tadekj said:
You might be right. Al of this very complicated.
I found this explanation on digital amp manufacturing side.
What is a Class-D amplifier?
The strict definition of a Class-D amplifier only requires that the output devices are used as switches. Fictitious class names that refer to switching amplifiers are actually referring to Class-D. Switching amplifiers are therefore Class-D amplifiers.
What is a "digital amplifier"?
Class-D amplifiers are often called "digital amplifiers". However, the "D" in Class-D doesn't stand for "digital", as is commonly thought. Switching amplifiers usually incorporate digital circuits (as in computers), so they can be thought of as "digital". There is controversy surrounding the definition of "digital amplifier" because it implies that the amplifier is made entirely of computer circuits, but this is not the case.
What are the types of digital amplifiers?
We divide digital amplifiers into two main categories, Analog Class-D and Digital Class-D. We refer to Class-D amplifiers with analog inputs as Analog Class-D and Class-D amplifiers with digital inputs as Digital Class-D.
Here a page from wikipedia on amplifier classes that is a good explanation: http://en.wikipedia.org/wiki/Amplifier_class#Power_amplifier_classes
It is quite common for people to think the "D" in class D stands for digital, but it is just an identifying letter for the class, like class A, B, etc.
At present time there may be some digital domain power amplifiers, I really do not know. Nevertheless, at some point that digital datastream would have to be converted to analog.
|
|
|
|
|
|
|
stvnharr said:
Nevertheless, at some point that digital datastream would have to be converted to analog.
Of course, but that doesn't change the fact that it's digital signal that gets amplified, hence the name digital amplifier.
PS A CD player for example isn't considered an analog playback system just because at some point the digital information it processes is converted to analog.
|
|
