The content of the question can be found in the E50 manual on Topping's HP.
Topping Support told me by email that I can plug the DAC on a 2.1A 5V charger without problem. So, I did it, instead 1A 5V (my cellphone charger has both options). But I realized that it does not matter that much. Of course, a very old charger can have age problems, so it is better to get a new one from a good brand.What happens once you try it with a standard mobile phone 5V charger?
I have heard reports of symptoms similar to yours. The cause was the power supply used.
Some have spekaers terminals and if not you can use a cable adapter. You use a pair of speaker cables and connect the sub to left or right speakers terminals of the amplifier, together with the respective speaker cable.I ordered this dac and the PA5 amplifier.
I forgot the fact that I would like to connect a subwoofer later on. Is the E50 capable of output signal in both balanced and unbalanced at the same time in preamp mode? That would solve it for me.
If not I would be happy for other suggestions on how to solve the connection of a subwoofer.
I thing that both Toslink and coaxial do not support DSD due band limitations of these technologies.Are there any members who use this DAC with a SACD player?
I am aware that most won't output over Coax or Optical (Read: Virtually none) because of the built-in DRM inherent to the SACD format but since the Topping offers DSD decoding... and there are a handful of SACD players that do offer DSD over coax or optical.
Unless I'm mistaken output level at 0dBFS should be ~4.25Vrms / ~14.8dBu for a sine signal (see SINAD dashboard, and manufacturer spec).Many thanks for your reviews. I have a question. If I have missed it do please accept my apologies but please point me to where I can get my answer: What is the output level at -20dBFS at full volume? Or at 0dBFS for that matter? I am trying to find the "gain" of the device between digital and analogue.
Not sure if I understood your comment correctly, but note that I wrote "~" in front of 14,8dBu (tilde, as in 'approximately') and not "-" (minus, as in 'negative').dBu is 0.775V. How can 4.25V is a negative value?
Thank you. Balanced out at 0dBFS is 15dBu or 13dBV.Not sure if I understood your comment correctly, but note that I wrote "~" in front of 14,8dBu (tilde, as in 'approximately') and not "-" (minus, as in 'negative').
Also, I just measured the output of my E50 unit with a true RMS voltmeter and got the following values for 0dBFS peak 100Hz sine tone:
Bal L: 4,25 Vrms
Bal R: 4,23 Vrms
SE L: 2,08 Vrms
SE R: 2,07 Vrms
Hope it helps!
No worries, glad to help!Thank you. Balanced out at 0dBFS is 15dBu or 13dBV.
Sure, I meant positive 14,8 dBu from the start - sorry if tilde symbol caused confusion, perhaps I should have written 'approx.' insteadFYI, tilde without any negative sign denotes a positive value
Well, E30 can't decode MQA right? So if you use Tidal & MQA you might want to get such a DAC with decoding functionality.Straight shot question (sorry if already covered): is it worth buying the E50 to replace the E30 that I already have? MQA is highly relevant for me as I stream Tidal.
I have a similar set up with TV (toslink) + Streamer (coax) going into the E50 (also used to control volume), then Audient id14 MKII as a gain+dsp filter device (knob at 2 out of 10 so roughly 6db gain) and final output to Presonus E8 sub + E8 XT.Just integrated the E50 in my setup: Node as input (fixed volume), connected via USB to the E50 (used to control the volume), then ARX RS-1 as HT bypass, and AHB2 with mid-gain settings (17dB amplification). I’m however a bit surprised by my listening level, typically -40dB. Is my understanding correct that 0dBFS then corresponds to 42.5mVrms at the output of the E30 and 300mVrms at the output of the AHB2? My loudspeakers have a sensitivity of 89dB SPL at 1m with a 2.83V input. So the maximum SPL level that can be reached, with the E50 set to -40dB, is about 70dB SPL, which seems very low. Mind you, it is in the same ballpark than the peak SPL measured with an App-based SPL meter when played hot-mastered music (Adele)…
Yes, I’m using balanced output. Indeed, when the volume is set at 0dB, the max power of the AHB2 should be reached. But if I set the volume at -40dB the full scale output of the E50 would then be 100x lower than at 0dB (assuming that the dB reading of the E50 are 20 log A, where A is the attenuation).I should have added, assuming you using balanced 4V with the ABH2's gain set to 17 is 28V i.e. the ABH2 at max power.