Still torn between the D90 and RME myself. Since computer is my source 99% of the time the EQ really doesn't matter too much to me, as it's something anyone can do better and more effectively in software. Topping needs to hurry up and make their 90-series dac/amp combo
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Topping D90 Balanced USB DAC Review
- Thread starter amirm
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EdW
Senior Member
The Okto is great but at that price for me at least the specs alone are a point of diminishing returns. The only reason I did not buy the RME yet is because I don't like some of the design choices but it's a great piece of kit. I'd prefer something with multiple headphone out, built in PSU, and balanced/xlr head out would be a bonus. Ideally it would be a dac/amp combo. I'd rather buy the RME PRO (which could replace my M4 for ADC) or Matrix Element X at that point if I'm going to pay more than the RME DAC or D90+A90.
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mt196
Active Member
@JohnYang1997 do you know if d90 and a90 respect the AES48 standard? And also if xlr pin 1 is grounded to the chassis
XLR pin is connected to the chassis yes.
But it's not isolated from the internal circuit. It's not connected willy-nilly to the input ground. It's connected in the place where best performance is achieved.
Got my D90 hooked up and playing. 
Me too.
See my post - https://www.audiosciencereview.com/...ced-usb-dac-review.10519/page-111#post-460156. You have to enable DSD over PCM
Veri
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Confirm already did that.
D90 dose has compatibility issues with Apple macOS. My RME is right next to it. I switched it over without any problems. (Regardless of iMac or MBP, streaming Tidal or local PCM files or DSD256 files, and I tested three players: Audirvana 3.5.38\JRiver 26.0.94\HQPlayer Desktop 3.25)
xevman
Member
Bit of a weird question any idea why no 32bit option appears for the Topping D90 in Windows? I know it doesn't really matter I just find it a bit odd.
That’s odd, I have 32Bit 384K available in my Windows 10 settings. Have you installed the Topping ASIO driver?
xevman
Member
Yeah have installed the latest driver and everything works fine. Mine is the MQA version so i'm unsure if this makes a difference.
xevman
Member
cheers the firmware update fixed it
What problems are you referring to? Seems they were solved on 5/9.
Only MQA version of D90 HAD issue with Mac. It's already long been solved. No issue for D90 normal version since day 1.
lupoal
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hello,
I'm testing the D90-A90 in these days togheter/against my Little DotMk2 and my Ifi nano BL iDSD, I'm facing something I don't understand and searching the web I 'didn't find the info...
keeping the gain inside the OTL at the same setting, with connection between D90 and OTL via RCA, I have to turn down the volume knob at least 25% to have the same pressure at the out compare to the Ifi... now I'm pretty sure the Ifi has a nominal voltage level of 2V, is it possible the D90 is 2,5V or more?
are there any measures about that?
what I've noticed is that the OTL seems to go higher in temperature with D90, I'm wondering if it can be dangerous, or more stressful, for the OTL electronics
thks in advance for help
I'm testing the D90-A90 in these days togheter/against my Little DotMk2 and my Ifi nano BL iDSD, I'm facing something I don't understand and searching the web I 'didn't find the info...
keeping the gain inside the OTL at the same setting, with connection between D90 and OTL via RCA, I have to turn down the volume knob at least 25% to have the same pressure at the out compare to the Ifi... now I'm pretty sure the Ifi has a nominal voltage level of 2V, is it possible the D90 is 2,5V or more?
are there any measures about that?
what I've noticed is that the OTL seems to go higher in temperature with D90, I'm wondering if it can be dangerous, or more stressful, for the OTL electronics
thks in advance for help
Veri
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-D90 is nominal 2V out. Are you sure iFi is not in variable output mode?hello,
I'm testing the D90-A90 in these days togheter/against my Little DotMk2 and my Ifi nano BL iDSD, I'm facing something I don't understand and searching the web I 'didn't find the info...
keeping the gain inside the OTL at the same setting, with connection between D90 and OTL via RCA, I have to turn down the volume knob at least 25% to have the same pressure at the out compare to the Ifi... now I'm pretty sure the Ifi has a nominal voltage level of 2V, is it possible the D90 is 2,5V or more?
are there any measures about that?
what I've noticed is that the OTL seems to go higher in temperature with D90, I'm wondering if it can be dangerous, or more stressful, for the OTL electronics
thks in advance for help
-In any case higher output into the Little Dot will not hurt it, no.
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