sajunky
Active Member
Musiland MU2s is at half price, the same chips inside. I would buy, subject to positive feedback/measurements, whatever.
https://www.ebay.com/itm/273909001809
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Which DAC measurements do you like to see next?
- Thread starter amirm
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https://www.ebay.com/itm/273909001809
Veri
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The EQ of the miniDSP is pretty interesting though!
Am I right or wrong to hate TPA6120? FX Audio X6 has them and have rather muddy sound.
OP
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A dap review is coming later tonight...
OP
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Very cool. I will see if I can get one....
sajunky
Active Member
It is a current feedback amplifier, different to many others. It should perform well with HP's of impedance 33 Ohm or above. For lower impedances it is a matter of a luck, as damping factor is critically low. As you see on a diagram, the amp requires resistor in series on each output which is around 10-15 Ohms. If you chose lower value, the amp can be unstable.
What they do here, they use a multistage negative feedback across two amps. Amount of this feedback determine reduction of the output resistance. In this example it is a minimum factor of 10 (to achieve 1.2 Ohm as per specs). This feedback is frequency dependent (as you see on the diagram "Gain L/M/H"). I don't know what it is for, but it will cause that output impedance reduction is frequency dependent! They can also run into number of problems we know well from the traditional power amps. This is a cheap way to reduce output impedance, like in the past years it was a cheap way to reduce distortions. It may measure well, but we don't measure all parameters that compose to the sound quality.
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Yes, I saw it in the miniDSP newsletter this morning. It ships right now.
I might get one and would be happy to drop ship it to Amir, but I'm in Europe so I don't know if it will be intresting.
digicidal
Major Contributor
I'd say that quote, coupled with Amir's measurements of the TotalDAC explains a great deal... and it's likely that all of the ultra high-end DACs will measure quite poorly. They practically have to.
Since transparent is, by definition, inaudible... how do you distinguish your product so that even an untrained listener with deep pockets hears an immediate difference while auditioning at their dealer? By coloring the sound in some way. Of course, if I were doing it - I would do so via defeat-able filters - so it could be measured to be transparent by objectivist reviewers... and then colored for subjectivist reviewers and audiophile customers.
Same here, I will probably order one myself as well with that price!
Hypex DLCP : would love to see this tested.
Context: I had built a DLCP + Hypex UCD Amp set up for Linkwitz Studio. I was never happy about it. Yesterday I replaced the SMS that's driving the Hypex UCDs, and there is an astonishing improvement. DLCP sounds good now.
Context: I had built a DLCP + Hypex UCD Amp set up for Linkwitz Studio. I was never happy about it. Yesterday I replaced the SMS that's driving the Hypex UCDs, and there is an astonishing improvement. DLCP sounds good now.
skipost-it
Member
Naim DAC V1, please...
It would be interesting to see measurements of the gustard U16 converter as no one has measured it yet. https://m.shenzhenaudio.com/gustard...512-dop-and-native-dsd-digital-interface.html
Seems that they are using some usb chip made by ESS together with 3 FPGA inside.
Seems that they are using some usb chip made by ESS together with 3 FPGA inside.
Veri
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It's just an interface though, I wonder how many of these really need to be measured
but I guess that same argument can be used for DACs..
ZeDestructor
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I'd say that quote, coupled with Amir's measurements of the TotalDAC explains a great deal... and it's likely that all of the ultra high-end DACs will measure quite poorly. They practically have to.
Since transparent is, by definition, inaudible... how do you distinguish your product so that even an untrained listener with deep pockets hears an immediate difference while auditioning at their dealer? By coloring the sound in some way. Of course, if I were doing it - I would do so via defeat-able filters - so it could be measured to be transparent by objectivist reviewers... and then colored for subjectivist reviewers and audiophile customers.
While that is certainly one way of doing things, there is also the alternative option of just embracing signal processing as a whole - either via "analog" devices like preamps and speakers/headphones, or via DSP. Once one accepts that signal processing isn't a bad thing, the whole discussion about the DAC/amp section of the source then becomes a trvial matter of just getting as transparent a DAC/amp as possible, rather than all this noise about how DACs and amps sound different from each other.
True but it will still be nice to know if it measures worse/better than other converters in similar price range.It's just an interface though, I wonder how many of these really need to be measured
generalguy
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Asus Essence One MKII
Macbook Pro w/ Touch ID
Apple Lightning to 3.5mm
Macbook Pro w/ Touch ID
Apple Lightning to 3.5mm
All built-in audio cards and PC (Macbook) sound will be in 90-100dB THD+N. Even though they will claim superior specs. You can ggl archimago reviews and search this forum for those. Disappointing, to say the least.
Apple Lightning to 3.5mm should be similar to Applie USB to 3.5 dongle. That was measured too.
generalguy
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90-100dB THD+N is acceptable for something that's not purpose built since the noise floor at my desk is fairly high. Could always use the apple USB-C dongle for an extra few dB!
Nango
Major Contributor
Matrix Audio HPA-3B ...... oldie but goodie???
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