JCALLY JM6 Pro USB C Type-C to 3.5mm Dual DAC CX31993 MAX97220 Digital Audio Portable Decode Amplifier HiFi DAC Mobile Headset Adapter (Silver Blue)

Great DAC and amp. No noticeable distortion even at highest volumes. Drives headphones without issue. Allows for a vast range of sample rates for great exclusive mode. Also supports microphone input/line in functionality.

Bought these along with Zero: Blue 2’s - for PC gaming/discord/youtube/music. First time using IEMs and this dac was recommended many times through reddit posts. Works as intended. Delivered quickly to Aus.

It provides crystal-clear sound with no coloration whatsoever, which is a huge plus. It has plenty of power to drive even the hardest-to-drive IEMs and 90% of headphones to at least 80dB (would not recommend listening to anything above 80dB). There is really no need to purchase a dedicated DAC and AMP. The only disadvantage is that the cable is not replaceable, so if it is ruined, you will need to buy a new one, but that is due to the small size, and nothing can be done.

Short version: Absolutely perfect lossless sound on AKGs and Bose over the ear headphones while plugged into iphone 15 pro max and iphone 17 and other apple products. God they sound good when streamed with Apple’s lossless option. Long version: Who needs to know more? Well… we all base our decisions on numerous input. So here goes. There are a number of options with the DAC CX31993 & MAX97220. Many similar in the customer rating. After narrowing down the ratings to over 4, I then looked at how many ratings there were for each adapter and eliminated any of the choices that were under 100 reviews. Then narrowed it to the two with high ratings and over 200 reviews. Reading through each review posted, on both positive and negative. Then chose the JCALLY JM6 Pros. Had never heard of the brand before this. Just wanted to try them out. About the adapter: These make you feel like you are sitting in the studio where the music is being mixed. They sound like the day they were recorded. But, you have to have excellent headphones to take advantage of what it is capable of playing. What that means is, the song sounds as if you were there when it was made. Not a bunch of lost bits that muddy the sound. For example, I have a pair of really cheap $10 Sonys for light work that doesn’t need to be crisp. It also means you need to have a recording that hasn’t been transferred from device to device repeatedly, where bits could be lost or are streaming on a low quality. Be careful what you ask for though, because you learn which songs weren’t mixed well. In one of the Queen songs, “I want it all” I could hear a noise from when the guitar was added in the middle of the song for a solo. It was really harsh. It looks and feels durable. Colors are as represented. Have only tried it on apple products directly into the C connector. Did not use any adapters and used a limited number of headphones, because most of those I have are bluetooth. Functions properly with no need to do anything but plug it in to headphones and the device connector. Just turn the music on and it works fine with no additional work needed. There was plenty of power in the included MAX97220 to use in our studio monitor gold AKGs. In fact, did not have to turn the volume the whole way up to get quality sound. Told my recording musician and hypercritical audiophile spouse about them and what a pleasure it was to listen to assorted music. Thinking spouse would find something negative to say about the JM6 Pro USB C Type-C to 3.5mm Dual DAC CX31993/Max97220 adapter. Instead he was quite pleased with the device and asked for the link. The only negative was that you do not get the 3D spacial auditory experience that some of the bluetooth connections offer. Unfortunately, I do not have any powered spatial sounding headphones that allow you to connect via wire. I use the song “Baba O’ Reilly” by The Who to test that functionality on new headphones. You do get stereo sound without any issues though. That being said, there is some loss on all my bluetooth options (apple airpods 3 and 2, Bose Quiet Comfort in several models), which muddies the sound just a bit. Advantage goes to the adapter though for clean, crisp lossless sound. Will have to check to see if anyone has plug in sound with spatial options. I read some of the reviews that mention a different type of headphone I had not heard of before. Going to research those. The price of $17.99 full price I paid seems cheap when compared to the ridiculous amount of money spent on some of the headphones out there. And they sound better than any bluetooth headphones I have ever heard/purchased from the crispness of the sound. Finally, I do not like sticking earbuds in all the time. They have to be cleaned regularly and do block the ear canal. Which can lead to ear infections when there are trapped little infectious critters. Which means I have to regularly disinfect the earbud where it goes into the ear and that can be tricky business with the air pods. As they are not the least bit waterproof.

The JCALLY works exactly as expected solid build, easy to use, and noticeably improves sound quality. Plug‑and‑play setup with no hassle. For the price, it’s a fantastic upgrade and I’m very satisfied.