First, to get it out of the way: The pricing here is a bit more expensive compared to other markets. Sure, there are justifiable reasons for it but it's still worth mentioning. Even with that, it is the cheapest, most performant single device solution currently out there. I would recommend reading the audiosciencereview thread about this one to get more details regarding the performance part if you're interested.

My needs were as follows: Plugging IEMs and headphones into the 3.5mm headphone jack and getting appropriate volumes for either. Plugging my bookshelf stereo speakers into the lineout and get a good experience for switching between them and the 3.5mm output. Having good enough power to drive demanding headphones if I want to go down that route in the future.

And so far, it checks all those boxes! For my low power hungry IEMs, the low gain setting works nicely. For my lower impedence but current hungry planars, the high gain works to provide appropriately loud volumes with a lot of headroom to spare. Speakers also work through the lineout and the switching logic between outputs is intuitive to me, but might not be to you if you're coming from other devices. I have not used any other outputs and I turned off bluetooth as well so I do not know how those operate here. The manual is a bit unclear about some settings. The device does get a tiny bit warm with usage but nothing alarming. The remote is fine but it can become a chore to line it up the unit properly or the presses don't register. The knob on the unit itself is a clicky one but I haven't had occasion to use it since I get to where I need easier with the remote.

For once, I'm glad that headphonezone didn't bring the EX5 from topping before this one because this is such a better deal for me for my needs than the EX5 and is cheaper as well.

I did extensive research before buying this. Audiosciencereview.com review probably the best accolade for this purchase decision. You can do your own research. However my variables were:
1.VALUE
2.PERFORMANCE
3.Power
4.Ease of Use
5.Future Proofing

Compromise:
1. Balanced output
2. Bring your own cables except for USB

I really am satisfied with my purchase, currently listening with M40x. Planning to upgrade to Sundara in coming years

Topping Dx3 Pro +

This Dac Amp is not mediocre at all, but finest in Sound stage, clarity, instrument separation. It sounds so natural and neutral that you feel music is playing in open air, not through any headphone.

It's not "boring neutral ". Not harsh, not fatiguing but Shining...

These qualities of Dx3 pro+ are easily noticed in Headphones like Hifiman Deva. Closed back Headphones like Neumann NDH 20 sounds even more spacious. clarity Depth and Sound stage improved.

Conclusion - Best Dac-Amp In Rs 20,000 In this category.

If somebody has balanced Headphones or planning to buy balanced headphone, they should buy it's Big Brother "Topping DX 5"

Other wise, Dx3 pro+ is the best for most of the Single ended headphone except power Hungry headphones.

Also to be noted, that it does not have bass boost Option like Zen Dac and Xduoo Xd05plus, also Dx3 pro+ is not warm sounding.. So bassheads may or may not like it.

Great sounding integrated DAC/AMP with integrated bluetooth, and a small physical footprint. Neutral sound (as compared to my Zen DAC which adds some warmth) that works well with my headphones (Sundara, HD650) and my IEMs (Aria, Timeless). Prefer the Zen DAC while using my DT990 (where the added warmth helps) but for other headphones / IEMs, like the DX3 Pro+ better. Strongly recommend if you are looking for an all-round DAC/AMP with bluetooth as an added bonus.

TOPPING - DX3 Pro+

I have used Zen Dac, Earmen Tramp, fiio q3, K5 pro and fiio KA3, Xduoo Basic.
Using DX3Pro+ along with Audio Technica R70x and 7Hz timeless was flawless with good sound. Under low gain setting there was no hiss in the IEM. Major disappointment for me was the absence of 6.3mm jack on front. Who gives 3.5mm as only option in a desktop DAC AMP?
On my initial impressions I did not find any sound quality difference from K5 pro. Will update if I find any,.

Pros:
Sound
Bluetooth support
Remote
Display
Size is small compared to K5 pro

Cons:
Only 3.5mm jack on front
Dial does not respond always to volume changes (skips sometimes)
No other way than remote to change the inputs/ gain etc
Volume levels are shown in -dB
No way to change the display brightness

I was in the market to buy a AMP/DAC year ago. Shortlisted, JDS labs AMP&DAC Stack, Schitt Magni/Modi Stack and Topping E30/L30 Stack. Chances of buying the first two Stack isn't there in India as we need to Import it(And extra cost associated with the imports). I was about to buy Budget topping stack. Then I heard about Topping released the successor to DX3 model, it made me curious. I started to search about it for reviews. I had seen very limited reviews at that time for this model. I was curious and convinced to get this all in one AMP DAC for at the Desk use. Since I have Sundara and Deva in my collection which demands somewhat high power, I decided to get this one. As soon as I seen this in the Headphone zone, I Just ordered it. Delivery times are not an Issue for me as I live in the same city where Headphone zone has their warehouse. Shipping always took no more than a day or two. I have been using this for almost a year now (11 months to be exact), I am more than satisfied with my purchase. It has enough power to drive my Sundara and Deva. Sounds great to my Ears too. Usual Disclaimer: Sound Impressions are highly subjective, YMMV. Always take that into consideration when reading any reviews or user's Impressions.

I have Apple Dongle, Fiio KA3, and recently bought IFi hip DAC 2 (Since KA3 is designed to operate by using connected device's battery, I decided to have a portable AMP/DAC with inbuilt battery to drive some low sensitivity headphones when I am on the go).

Compared to all these, I prefer to listen to music on DX3 pro+. I am experiencing some tighter bass response, bit improved Instrument separation and overall clarity. Listening to music via DX3 pro+ helps me to enjoy the Music and basically it elevates the music listening experience and that's what I need. I use Dx3 Pro+ with Sundara all the time, There are many WoW moments when I listened to my favorite tracks which I was listening for a long time. These two are the most used gears in my very limited collection. Another headphone which comes nearly close to the usage of Sundara is my SRH 1540. Great closed back Headphone, though.

I use Equalizer APO when I am listening via PC, I use +3-5 dB bass boost for <105 hz along with other parameters of oratory's EQ for Sundara. Totally it comes to an pre-amp of around +7-10dB. Even then, I still have enough headroom and I run Sundara in high gain mode.

Overall, I am satisfied by this purchase and don't have any itch to upgrade or replace my Dx3 pro+ for at desk music listening. Hope he will give me company for a long time and not give up on me anytime soon. :)