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Linear power supply vs battery power for DAC

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amit11

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Almost all digital recordings that you hear are mastered on delta sigma dacs:)
Hmmm, which is fine bcos we dont have options from the source / recording perspective.
Another delta-sigma in the chain during playback will definitely mess up / color the sound. :)

I had read that its basically the filters employed which mess up the original sound. Based on the computations, for each original sample, more are generated and injected in the flow. There will be coloration (minor or major) following each original sample. In a nos , there might be coloring bcos of stair step , but its just single type of colouring throughout the music vs the filters which give various flavours of colouring.

Sent from Note5
 
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dheerajin

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analog to digital conversion happens much efficiently than digital to analog , because of digital filters present in delta sigma DACs. And NOS DACs dont have those filters in them, so originality is maintained. Much can be read in below article-

Converting Analog into Digital Filters
 

prem

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Honestly its all in the implementation. I have heard great delta sigma dacs like Antelope Audio, Weiss, etc. Also NOS dacs like Zanden and AMR. They all sound great. It boils down to personal preferences. A well implemented delta sigma dac is as musical as a NOS dac but with more resolution and detail but less warmth. It all depends on the rest of your chain as to whether that extra resolution and detail works or not. Theres no such thing as only a NOS dac will work
 

dheerajin

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. Theres no such thing as only a NOS dac will work
very well said about the implementation, it is true. There is no such thing as only NOS dac works, actually it depends on taste. OP has not compared the NOS DAC to great delta sigma DACs. Only thing with NOS DACs , that they come without filters and without oversampling and thats is the plus point for them.
 

prem

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Agreed Dheerajin. I too personally prefer NOS dacs. But the APL Hifi dac whic uses delta sigma clearly beat any NOS dac I have heard at any price. The APL dac is expensive:)Its the most musical dac I have heard.

Amit11, you might also want to look at Sparkler dac sometime in future. That too is a nos dac and reasonably priced. Around USD 400 I think. Its made in Japan. For input you have to choose either i2s or USB or coaxial or optical. Very very good sound
 

yogibear

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Try TDA 1541 and if possible listen to TDA1541 S2 Double Crown....
 

Hari Iyer

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I think the LPF after the DAC in the analogue domain determine the final outcome of the DAC sound stage.
 

Hari Iyer

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i read somewhere that ESS Sabre DAC dont have filter in the output stage
Yes, the filter is integrated into the chip itself, but you have the option of keeping them external too. IMO, external filtering has better option for choice of opamp and circuitry. You can also go ahead and put a transformer coupled or even discrete filters or even tubes.

NOS DAC anyway dont require any filters because of their inherent design.
 
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soundnovice

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Ifi power - did not like. It took me one month to realize that even though the sound was initially attractive, it was causing fatigue.
Power bank - good. Different power banks will give differwnt sound.
Lpsu - not tried
can u open up power bank, see what LDOs they are using at output stage?
if possible tap the lines and use ur own quality LDO like from linear LT1083 etc
 

haisaikat

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can u open up power bank, see what LDOs they are using at output stage?
if possible tap the lines and use ur own quality LDO like from linear LT1083 etc
Seems like a complex proposition .. rather a diy attempt at pure dc might be more convenient. Anyway have bought a mi 20000 mah bank. Will test
 

rahul_muzik

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Beautiful sound....

Let me share my experiences

A big dilemma and a confusion 'why this is happening', I had in my experiences frequently and was always at the back of my mind. It is finally settled I can say.


a) Many years back I first had a normal two speaker system. I liked it ofcourse. Over the time I used to feel some songs sounded fantastic and some ok-ok. Could not understand why.

b) After few years I got a Bose system. I was fascinated ofcourse. Everything was better. All kind of music I liked on it. After going to a theater and coming back, I used to listen to the same song on it, but I used to feel something missing. Was it the punch missing which i could feel in the movie theater? This happened many times I went to theatre and I came to back home and listened to on Bose.

c) I used to listen to same songs in my car music system. Many songs i liked on Bose and somehow I used to rationalize that my Bose is better than it. One day I felt that one of my songs (the bunch I use to audition), sounded better in my car. That day i stopped rationalizing that my Bose is better for all songs.

d) Then one day I listened to one my songs in my friends car music system. I instantly liked it and that day I realized that my Bose is missing something.

e) I started searching and came to know about amps, floor standing speakers etc. After few months of auditioning I finally purchased the Yamaha amp, Tannoy speakers, schiit dac etc. During these 3 years of upgrading it it was a fantastic experience. Everything sound better than all previous experiences.

f) However I felt that I reduced my listening of the songs which I used to audition. These three years also whenever I went to a movie, came back to home, and listened to those same songs, I used to feel something is missing. Though the sound was hifi, some songs did not sound as they should.

g) Out of a list of hundred songs, I used to avoid 50% and used to listen to the remaining 50%. In short I started listening what was sounding good in my system.

h) Recently I also heard some songs on a sound bar, at my friends house. (The same friend whose car system I hear). Though it was not hifi, I felt it sounded good on few songs. I used to feel that my system is hi-fi and his system is just a sound bar, then why some songs are sounding more pleasant in his system.

i) Whenever I did some upgrades in my system, especially changing the DACs from fiio d03k, then schiit modi and then schiit modi multibit; I observed that my list of songs to which I eventually listen multiple times, that list used to get changed.

j) Then some songs sounded better by connecting my ipads headphone directly to amp instead of the DAC in between. It used to sound more natural than the sound of DAC but due to less details / bloated bass etc, I had to finally switch to my DAC only.

k) I also observed that during Ganpati, a local music system was hired and some people used to connect via laptop headphone out to that system, or would connect android phone out to that music system and it used to sound good. Though the sound was never hifi, but it had some charaterstics and elements which I always felt were missing in my hifi system.


l) After normal schiit Modi, the multibit had arrived. Experience went to another level. After many months I again experienced the same dilemmas which I have been going through. In some songs punch was missing, in some songs the singers was a bit sub-dued; in some songs the instruments were prominent. Please note that I could never concluded why this was happening and even to realize that some kind of this thing is happening / feeling, it takes many months because somewhere in our mind we always believe that our purchased is a hi-fi one and it should be better / best.


After getting this NOS dac, though you might call it a beginners NOS DAC, my above dilemmas have resolved, that is what I feel.I can now feel that the music is just right, AS IT SHOULD BE.

Today after watching a movie, and when I came back and listened to the same songs (via youtube), it sounded the same. This has never happened before.

The songs which I used to avoid listening, are now back in my list. Everything is sounding so natural and open that I simply don't feel the need to avoid any song.

Now I can conclude that upsampling and filters in many dacs might make the sound hi-fi, more detailed, more punchy etc...but we loose the naturalness. However to realized this is not easy.

After hearing to this DAC, and the music memory of what I have heard in the past in my car music system, in my friends car music system, in my friends sound bar, headphone out of apple ipad, headphone out of iPOD, my bose system, my initial small music system etc, I can say this has just the right sound.

This DAC came to me just 3 days back. To be honest, i did't even feel the urge to AB compare it to my schiit modi multibit. I am simply enjoying it. From my perspective, this is the biggest compliment to this NOS DAC i have. I don't even feel any urge to analyze the mids-highs-lows and neither the soundstage nor the imaging. Everything is sounding so natural and open that there is nothing to analyze or even be doubtful. This has never happened before.

Price wise (3900 rs) anybody would feel this is a beginners DAC, but for me it is the best till now.

Now music sounds, as it should! :)


Amit.
I just wanted to know which movie theater were you going to watch the movie....
 

audiohunt

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Big thumbsup to LPS units to the audio electronics have a sotm 200 ultra with sps500 which made biggest difference to the streamer . Just don’t have the solution of bigger htpc though.
 

yogibear

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I got the best sonics both from USBridge and RPi2 running the same USB DAC from both by powering the combo from battery. I used a Y splitter cable and used two 5V 2A power banks. The difference in sonics between RPi2 and USBridge using the same DAC, was hard to tell in a blind test. The background became darker compared to LPS.
 

firearm12

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I power my digione signature through allo shanti on dirty side and a 6v battery on clean side. Battery on clean side does win over shanti on clean side. Shanti is well reviewed lps but in my case battery wins over lps. Using a power bank is not suitable for powering equipment as it has protection chip inside which produces noise.
 

amit11

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I power my digione signature through allo shanti on dirty side and a 6v battery on clean side. Battery on clean side does win over shanti on clean side. Shanti is well reviewed lps but in my case battery wins over lps. Using a power bank is not suitable for powering equipment as it has protection chip inside which produces noise.
For 5V any recommendation for battery?
 

firearm12

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For 5V any recommendation for battery?
AFAIK there are no cells that produce 5v. In power banks they generally use 3.7v battery which is converted to 5v and the converter can induce noise in supply so not recommend to use using power banks. So to get 5v lps is only option.
 
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