-
Welcome to ASR. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!
SMSL D1 - ROHM DAC for everyone
- Thread Starter
- #462
You could order from Mouser or Digikey, but I don't know what their shipping costs are like for small orders.
Perhaps you can find a retailer that carries them.
These components should theoretically fit, but you'd need to check the pinout.
Mouser DC/DC 5V -> +/- 12V
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
Late to this thread. So what is a good, and hopefully low cost USB-C power supply for this?
Also has anyone yet figured out what the chips are that have their labels sanded off?
Also has anyone yet figured out what the chips are that have their labels sanded off?
- Thread Starter
- #464
Any standard USB/5-volt power adapter should work. If you want quality, just get a Mean Well. 5V/5W should be sufficient.
With an adapter cable from 5.5/2.1 or 5.5/2.5 to USB-C, you can use almost any power adapter.
If you're using two USB-C connectors, they need to be very thin, otherwise it won't fit.
No, probably some kind of NE5532.
But why would that matter? The measured values were achieved with it.
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
Because I'm a curious fellow. Because I'm reverse engineering it...
why does the reason for my question matter to you? If you don't want to answer that's fine.
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
I find your question puzzling. Why would WHAT matter? Why would it matter to me what the chips are that they decided to sand down?
Because I'm curious. You seem to have asked why I asked a question... so
And I don't understand the a statement about measured values.
I didn't post about measured values and I don't really care about them atm unless they help identify the unmarked chips that I asked about.
In general I'm always curious what chips and other components are used in various products, for lots of different reasons.
Last edited:
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
whatever... The question still stands, what the mystery chips are.
Doesn't matter which chips are used.
I have replaced all 03 chips with higher performance opa1612a and results are outstanding.
RandomEar
Addicted to Fun and Learning
- Joined
- Feb 14, 2022
- Messages
- 757
- Likes
- 1,914
Op amp rolling is essentially snake oil. It either makes the device perform the same or measurably worse [1, 2]. There is almost never an audible difference, but if there is on a device like the D1, which was audibly transparent before rolling, it can only be worse.
Technically, results can be outstanding in this case - if nothing actually changed about the output
JSmith
Master Contributor
You continue to claim results, without actually posting any results... which have been asked for multiple times.
JSmith
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
He posted his results you just don't like the measurement equipment he used - his ears and brain.
I get that many here prefer other equipment, but most people don't have that, or they don't care about it.
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
repeating this ad infinitum is borderline insanity. People who hear a difference will NEVER believe you.
JSmith
Master Contributor
Incorrect... one either has a test setup and conducts measurements of the analog output, or does a level matched comparison, without peeking or any tells.
As you may gather, ears are very much needed for the latter.
It's constructive to refute nonsense when it is posted.
JSmith
RandomEar
Addicted to Fun and Learning
- Joined
- Feb 14, 2022
- Messages
- 757
- Likes
- 1,914
People are free to believe whatever they like and I can't force them to do otherwise. But if nobody contradicts the nonsense and argues in favor of science, what even is the point of keeping audiosciencereview alive?
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
It's not constructive because you are just repeating yourself AGAIN using a different word... "nonsense" in place of "snake oil"
truth_soldier
Member
- Joined
- Mar 14, 2021
- Messages
- 99
- Likes
- 38
Again, people who hear a difference will never agree that it's nonsense.
You're free to state that it's impossible people hear a difference but they won't believe you.
It's like trying to convince someone not to believe in what they "lying eyes" show them.
anyway, it's enough off topic banter for me for now.
JSmith
Master Contributor
Not sure what you mean there... we're all human and thus subject to the normal biases. It's not just limited to those who know the facts, regardless of what their brain tells them they hear. Some may hear a difference, yet know it's nonsense or illusion... others may hear a difference and assume it was due to the opamp change, when it was nothing to do with that at all apart from a queue for the brain to fill in the gap of expectation.
This is what some don't get... no one is saying to anyone they didn't hear what they heard. What is being explained is what is heard is not always for the reasons one thinks or expects it to be.
JSmith
