Joined in 2023 
82 
63 About this deal
I'd say that combo of the Android TV, no audio Computer monitor, and T9 pro made a great little station. While I agree there are usually much better dedicated DACS out there I would want some good improvements to the T9 pro in exchange for the sacrifice of a built-in DAC.
Out of curiosity I tested the power consumption and sure enough the device consumes much less power once it goes into this mode so its definitely turning stuff off internally when this happens. Here's the list of TOS optical outputs I have so far. Xbox 360, ASUS z690 Apex Maximus, TCL Roku Television 2 Sony CD carosels, Android TV with HDMI and Optical output. Just like A07, speaker connectors are small but I had no issues in connecting 4 mm banana plugs. I am using 12 AWG cables, might be difficult to put in bare wires!So far, the only time I have ran into an issue with the Aiyima T9pro handling the Optical input is on the Sony Carosels. If they removed the internal DAC they would lose Coax and Bluetooth options. A Completely Different Business ModelWhy is the same product sold under many different names? Mr Liu’s friend’s factory OEM’s for a lot of people. Perhaps, and I’m not sure, some of them have small design changes, but...More importantly, from what I understand, these brands, Aiyima, Suca, Douk, Nobosound etc, compete as well as cooperate. Some would re-brand something without hesitation (same factory) and use their own sales base. This is pretty unthinkable in the West. Grant you, the products are similar (a testament to the very high level achieved with cheap digitals now) and, if you ask me, there is not much room for breakthrough.
I got the feeling that this configuration sounds a bit like a tube system (including the feeling of being slighty slower), and I am a tube man! I was satisfied.
If nothing else, an EQ can be of great assistance of getting rough ideas about how speakers tonality is different when compared. I connected USB to laptop, without tubes or even power connection, and Windows 10 detected it right away. Seems like DAC section is operation even with USB power.
Being an electronics engineer (and one with a conscious for power efficiency), I had to include this :-) It's also where I'll spend more time, because it's where it surprised me more (and on the negative side). I tried them all: USB from the computer, coax and RCA (separately) from an old Philips CD Player, optical from a LG TV and Bluetooth from my Android phone.Issue #2 (power inefficiency): When turned on it draws close to 11W! This is with no inputs or outputs connected to it yet, which came as a bit of a (negative) surprise. I wasn't expecting that much power consumption for such a small device that was supposed to be power efficient (according to some comments I saw online). As a comparison the Motu M2 only consumes about 2W. The Supporting Players Now, this is important. What I have here in China are very humble (by my standards), based on a set of more than 15 years old Chinese Sansui AV system (yes, the Japanese sold the name to the Chinese company, which is now a home appliance company) which I parceled out for 2 systems (main one, System 1, in my study, where I write for you; and the much less used auxiliary System 2 in the LR) There are a few extras that I had brought over from HK long ago, the most important being Revox and Sony. The stuff I use are detailed in my previous articles (Current iteration here, with links to earlier config). After some work they sounded pretty good. After listening to the systems for years I thought I knew them well, but what happened told me it was not quite so. DAC A6 uses ESS SABRE ES9038Q2M as decoding. It's widely recognized in the high-fidelity audio industry, providing extraordinary music quality and lower total harmonic distortion (THD) levels, and are the gold standard of audio performance.
Connect the rear power amplifier that needs external connection to the audio source output interface. Connect the PC-USB interface to the computer with the USB cable configured by factory (USB supports hot plugging). Since I don't have any passive speakers yet, I could only test the Aux Output, connected directly to the Presonus' RCA inputs. Windows 10 saw it as "SPDIF Interface" device, rather than USB DAC or something, but it's just label which could be changed in sound settings.
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Strong output power and low frequency output: use amp IC TPA3250, each channel can output 100W(4Ω), match perfectly and easily to drive all 3-8Ω passive speakers, adds a low frequency output easy to connect active speakers and build 2.1 channel system, the bass effects is greatly enhanced. The Decision Yes, call me superficial. I immediately fell in love with the SEXY (VU) meter! But, unlike some of you, I'd not easily give in! :-) Certainly I have no need for another amp (or so I thought). While the almost universal digital connectivity appeals, what seals the deal for me was the AUX OUT. I wasn't sure whether it is Fixed or Variable, but as some users used it for subwoofer it should be a Variable out. It is, and more on this later.
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