Sokel
Master Contributor
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A70 out to Focusrite in obviously,it's straight forward,says so on the window too.How did you acquire those signals?
A70 out to Focusrite in obviously,it's straight forward,says so on the window too.How did you acquire those signals?
A70 pro with no source, XLR or RCA out to my soundcard Focusrite Scarlett 2i2 (balanced inout for XLR, unbalanced input for RCA) with input gain at approx. 20% on the knobHow did you acquire those signals?
In this case what you see seems the bouncing of a mechanical switch (probably a reed relay) used for muting. The real waveform is more complex but you need a real scope to see it. The RCA output uses a different method (electronic switch probably), maybe because of the lower amplitude signal.A70 pro with no source, XLR or RCA out to my soundcard Focusrite Scarlett 2i2 (balanced inout for XLR, unbalanced input for RCA) with input gain at approx. 20% on the knob
If the vertical scale is 5mV/div, that signal is only some mV amplitude. If the volume was at -60 dB (1/1000) this is correct.Some more fun, I added waves from an input signal as a reference for comparison.
View attachment 328862
A70's volume was at -50 think, close enough ? anyway I'm not sure of the absolute values in what I did, but what is 100% sure is the input signal and the noise were both measured in the exact same conditions for each output.If the vertical scale is 5mV/div, that signal is only some mV amplitude. If the volume was at -60 dB (1/1000) this is correct.
Can you report this to Topping Support?Silver arrived, serial 23086550xx, sealed box (plastic film), firmware v1.07
--> again, speaker pop noise from XLR out when triggering internal relay (switching input/output/unmuting)... at least bad noise is now perfectly balanced on right and left channels, I guess I'm happier ? not sure... Tested RCA out, almost noiseless
Updated to v2.01, no change
I looked for any DC offset voltage out from power amp (Ncore) with each sources/output/mute states on A70- no difference (6 to 10mV)
"Oh, God, help me !" Metallica, One, ....And Justice for All, Track 04, 1988.
Topping L50 is a good amp, but I would like something with more features (ports, remote, display ) so I was considering a A 70 pro, because of the more features, more power and not massive power supply hanging from AC. Is it a way to go or it's not worth it?
I have a very early model A70 Pro. Haven't had any issues. Are there confirmed hardware mods that the latest manufactured versions have which could head off future issues? Or is it entirely firmware based?After an initial rocky road, now it's good to go
After an initial rocky road, now it's good to go
I have it here for 2 days and ... W O W.. all my planars now really sounds like they were meant to sound!After an initial rocky road, now it's good to go
All-in-one, more convenient, less cables to worry about, etc.I can’t decide between Topping A70Pro and Smsl D6s or Aune s9c. Can you help? They are nearly the Same Price.
+ More power
+ USB C
+ More settings
or
+ whole in one
+ more premium feeling (remote)
+ more musicality (?)
I still need the fixed SN coz it's easier to check if I'm not getting the earlier "problematic" models, so appreciate if anyone can point this out. ThanksAfter an initial rocky road, now it's good to go
I have been experiencing the same thing -- have you found a solution?I just received my A70pro yesterday and am noticing that a couple times every minute, I hear a relay and the sound stops (display Vu/FFT continues to work) and then it comes back. Is this a bad setting somewhere or has anyone else experienced this? Driving via XLR from ADI-2 DAC and outputting to Edition XS over XLR.