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I bought it from DCA's online shop in fall 2021. Photos without and with flash.

I noticed your post the other day, and today I posted the LA90 THD ratio vs generator level graph in the LA90 thread. I don't have a LA90D, but the input section may be similar. https://www.audiosciencereview.com/forum/index.php?threads/topping-la90-review-integrated-amplifier.33374/post-1952008

This is a graph of THD ratio versus generator level. This is for checking the allowable signal level of the LA90 input section.

https://www.audiosciencereview.com/forum/index.php?threads/chord-hugo-2-review-portable-dac-hp-amp.35812/post-1256668 According to previous measurements, the onboard analog audio output appears to have lower latency. However, it is not stable in any case. It may be different if use UAC1.0 or 2.0...

My prediction is also around -120dB (measurement limit value), but I wanted to check it at least once just to be sure. I think it's my chronic illness.

Thank you @amirm for always reviewing us. Do you have a stereo pair? It may seem silly, like measuring the channel deviation of a relay-type attenuator, but if you have time, please measure the crosstalk. I'm interested in what will actually happen.

Changes in response due to load fluctuations are also likely to be unique to the amplifier. Therefore, it is necessary to measure at least each load (2/4/8ohm). OP's suggestion is interesting, but actual sweep measurements may be unavoidable in order to make a decision. various knees.

The 4th order hardly changes, but it may be a function like this. https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-okto-dac8-8ch-dac-amp.7064/post-1855504

The 9310 volume controller for genelec GLM is also a non-click rotating type with approximately 300 degrees. The feel of this is also smooth. https://www.genelec.com/9310b-wired-volume-controller

No. It is possible. For example, molamola makua is about 300 degrees from 7 o'clock to 5 o'clock. The audio signal is analog rather than digital, but the controls will likely be similar. There is no problem with reaction speed. (If turn it extremely fast, the volume change will be delayed.) The...

This post may be helpful. Comparison of digital volume control, Behringer Monitor1 (passive) and several preamps (active). https://www.audiosciencereview.com/forum/index.php?threads/topping-a70-pro-preamp-to-control-volume-snr-compared-to-direct-digital-and-passive-volume-control.45930/

This post may be helpful. When I measured the temperature, the LA90 was placed alone on a workbench about 70cm high and there was almost no wind. (I closed the doors and windows and turned off the air conditioning.)...

I get fired when I download ZIP files uploaded to internet bulletin boards, so I'm guessing from the information displayed. If the FFUC output reference level setting is "+4dBu", there seems to be no problem with the measurement result of 3.4V output with 0dBFS input. The THD+N ratio of ch1~2...

It's possible. Output voltage is safe. The minimum requirement for professional mixers and I/O racks is to be able to receive 12Vrms (24dBu). Also, it seems that the sleeve of the 4.4mm jack is often floating. (At least I've never come across a device where the sleeve is connected to ground.)...

When connecting XLR cables with floating shells to Meyer Sound powered speakers, noise will often occur. One easy solution is to short the speaker's XLR terminal shell and pin 1. I have several Image plugs, and if I don't have time, I plug them into the loop out terminals of speakers.

I noticed your post yesterday. It may have already arrived, but I'll post anyway. I don't have a PRO, so I measured it in Stereo.

Since the measurement conditions are different between Amirm and TOPPING, the measurement results will also be different. ・No weighting and A weighting ・~22.4kHz and ~20kHz ・4V and 5V etc.

D90SE was SMPS. I looked at the back panel of the D90iii and it looks like an SMPS.

The SPEAKER2 connection was not measured, so it remains possible for the signal to change. It's fine if you don't mind, but just in case. https://www.audiosciencereview.com/forum/index.php?threads/douk-vu3-vu-meter-review-updated-version.44457/ By the way, even if they are connected in parallel...

does this work? https://www.ebay.com/itm/374552470012