I was able to listen to both at a near uncomfortable level without going all the way up on the volume so there is plenty of headspace on the amp.

Both were driven without issue and sounded great. I tested this amp with both my 32 ohm Meze Neo 99’s and the 64 ohm open-backed HarmonicDyne Poseidon. The last thing is that there is a very nice USB included which means you can connect to your laptop right away and start listening as soon as you get the box delivered.

The power source is a wall-wart which is not bad, and since this is just a DAC, don't worry about getting a bigger power brick. The volume knob has a nice feel and has you can make minute changes to the volume easily as it has a long range. The input switch is a short press on the power button and has a nice blue indicator light that is not too bright.

There is an added bonus of both a 3.5 mm and 6.35 mm headphone jack so you do not need to search for an adapter for your IEMs nor over-ear cans. The output is single ended (both on the RCAs and the headphones) and has a rating of 400mW. The DAC chip is a Saber ESS9018K2M which has great sound, zero noise floor, and can handle 24 bit/192 kbps music signals. There are a full-sized set of digital inputs (coax, optical, and USB) as well as RCA outs. The feature set is basic, though it has everything one would need for a DAC that sits on your desktop or as part of a fully featured stack including the A07 amplifier. Ayima is now synonymous with low cost and extreme value. They have hit multiple 'home-runs' with the Texas Instrument chip in the Ayima A07, A09, and T9 as well as other headphone DACs like the T8. I am an avid follower (and patreon) of several budget minded YouTube reviewers, and to a they all like the products coming out of the Ayima company in Shenzhen, Guangdong, China.

Amazon digital optical converter