Like everything from BQEYZ Audio, this case is great! Sturdy, plenty of space, and has a sewn-in mesh pocket inside. Top notch.

Sounds very good for an iem of this price.

very immersive, wide soundstage... in some songs you have the feeling, you are in the middle of the music... sufficient bass for my taste

- Very good single DD implementation
- The different tunings do sound different
- Very good build quality for the price
- The case is actually useful and not to big like most

The cable is high quality, each knot is evenly braided, very soft and light weight. Color fit perfectly with my CK2V, slightly smaller than stock 4 cores cable, the same high quality modular plug. The shipping was pretty fast

Best 99$ ispent on audio equipment!
Fantastic IEM -> Winter Ultra.
Thank you so much for this opportunity.
Will buy again.

Using the DUNU S&S eartips takes the Winter Ultra to another level.
With these tips, the fit becomes more stable, the bone-conduction driver couples much better, and the slight metallic edge I heard at first practically disappears. The sound gains warmth, body, and bass authority without losing clarity. For me, the S&S tips unlock the full potential of the Winter Ultra and make the tuning far more natural and enjoyable.

Shipping was very delayed and I received no response from support, but the order eventually arrived safely. I received the Winter Ultra IEM and I’m satisfied with the product. Thank you.

I've switched from these 3.5mm earphones to FiiO KA13 earphones to these 4.4mm earphones, and these are the best! The sound pressure level has improved dramatically since switching from the FiiO. This quality at this price... It's amazing.

I know there are things like changes in sound quality and the built-in chip, but cheap connectors from 100 yen stores introduce a lot of noise during playback, so I'm happy just to have that clearer sound. I'm using a KZ ZAX and a TRN MT5 connected to my iPhone 15, but I wonder how much it would cost to achieve this sound quality without Chinese audio.

The sound is now clearer than the original Apple headphones! I think the sound quality has improved, but I think it's just a placebo effect! Since I bought the LIN headphones, I've been enjoying listening to music every day and have been wearing them all the time.

I think it's a good product without any strange flavorings. It has a luxurious look and is durable.

Although it's pseudo-balanced, it has a sense of depth and the sound quality is good. The small size of the device means it doesn't get in the way. I think this size is sufficient for listening to wired earphones with a smartphone.

I bought this because I wanted to use 4.4mm earphones with my iPhone 16. The resolution is lower than a dedicated DAP, but the sound is good enough that it's not noticeable at all. It actually sounds lively, and depending on the earphone, it can mellow out the harshness, so I'm thinking about using this. I'm glad I bought it.

Usable. No noise, so it's good. Good value for money.