Veri said:
Amir pretty much always tests 5V DACs with a cheap small freebie Samsung charger, which work totally fine. Those iFi iPower things don't seem worth investing in in any case. The iDefender works, but I don't believe it works different from a 12 cable like this:
//www.audiophonics.fr/en/dc-p...e-for-55-21mm-female-power-supply-p-8332.html
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That is a nice cable tweaked to let you inject cleaner power, according to that product page:
"This cable allows the data to be easily separated from the input power of the self-powered DACs.
This product is ideal for injecting clean [non-noisy] current into any audio device using the 5V from the USB ports.
They suggest this Linear Power supply to use with that cable, on that product page:
Linear stabilized power supply 5V 5A Squeezebox Touch © Black V3 - Audiophonics
I have a bunch of otherwise noisy Samsung [and other] 5V power supplies that I have tried to use on my radios that use USB power, and those cheap 5v power supplies are all too noisy - too noisy to use to power and listen, only good for charging.
When I use the iFi iPower X as the external power supply for those radios I can listen and charge at the same time. It is clearly putting out cleaner power.
You use whatever power supply you think best for your applications, and so will I.
BTW, have you actually used that USB cable to get rid of PC GPU noise?
If you do test it, please post here as I couldn't find a USB cable with no power wires.
D90:
D90SE:
D90:
Additional Topping D90SE measurements:
I received D90SE email updates from APOS, and Hifigo has the D90SE up for order:hmscott said:
The Topping D90SE is out
D90SE Fully Balanced DAC -TOPPING [tpdz.net]
The D90SE has new 2 x ES9038Pro, 2nd gen XMOS XU216 adds DSD1024 [USB], Sinad [emailprotected] [vs D90 [emailprotected]], Dynamic Range [emailprotected] [vs D90 [emailprotected]], same CSR 8675, MQA Standard and USB/Optical/Coax/AES now support MQA, IIS Supports DSD1024, higher output options with 5V/4V XLR and 2.5V/2V RCA
Spoiler: Topping Measurements, D90SE and D90D90SE:
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D90:
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D90SE:
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D90:
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Additional Topping D90SE measurements:
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I received email updates from APOS, and Hifigo has the D90SE up for order:
TOPPING D90SE DAC [Digital-to-Analog Converter] Apos Audio
Topping D90SE DAC HiFiGo
The D90/D90 MQA has sold out everywhere[?]
The price for the D90/D90 MQA was $699/$799, and now the D90SE [MQA Standard] is $899.
Spoiler: D90/D90 MQA information, from the Hifigo D90/D90 MQA product listing, Topping sourced//hifigo.com/products/topping...4499-bt-5-0-dsd512-32bit-768khz-pre-amplifier
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One thing to notice is that at the end of its life, D90MQA was already 849usd. And since last time adjusting price, USD to RMB has dropped further. So it's inevitable that D90se is 899usd.
ALex_hha said:
Do you have any plan to release D90 on ESS but without MQA ?
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The D90 and D90 MQA have different hardware. The D90 has the XU208 and the D90 MQA has the XU216 + re-engineering costs to add MQA Decoder supporting hardware, and then there is the newly acquired license from MQA to amortize over the units shipped. The D90 was re-engineered to add MQA features - possible due to the XU216 - responding to a high demand for MQA.
Actually I'm not sure if MQA licensing has a lump sum paid up to a certain number of units shipped - amortizing the cost over each unit, or if there is a lump sum + fixed per unit cost up to a certain number of units shipped.
The D90SE has the more expensive hardware already, the "2nd Generation 16-Core XMOS XU216 USB Signal Receiver", from the beginning of the product release.
Topping would need to "go backwards" to offer a D90SE without MQA, and re-engineer the D90SE to remove that 2nd gen XU216 part and re-design in the less expensive XU208, and then change the software to remove the MQA bits - and Topping would probably need to come up with new unique code to integrate the new [to this product] XU208 into the D90SE, and then optimize the code to get the same awesome performance measurements as the D90SE with the 2nd gen XU216 is getting.
In effect it would be *more* costly to re-engineer the D90SE hardware to downgrade it to non-MQA, and so there likely wouldn't be any real end user cost savings - the price might even go up - like it did when Topping spent extra $ to re-engineer the D90 into the D90 MQA.
Simply turning off the MQA bits likely won't provide any savings to the build cost of the D90SE, as the marginal cost of enabling MQA on the D90SE might be zero, so I don't see Topping releasing a D90SE Non-MQA model.
And, what would stop D90SE *non-MQA* owners from simply flashing the D90SE *MQA* firmware onto the D90SE *non-MQA* model unless there is a significant hardware difference, like swapping the XU216 with the XU208?
Besides, a D90SE *non-MQA* model wouldn't be a very "Special Edition", now would it?