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Sound Signature: Mildly U-shaped, reference signature with deeper rumble and extra emphasis on upper-mids.
Tonality: Neutral, natural.
Highlights: Average-size shell, crafted from lightweight ABS material, hand-finished to a smooth surface with skin-friendly lacquer layer, jewelry-grade diamond-cut faceplate design, average-size nozzle, very comfortable fit; lightweight custom pure OFC silver-plated cable; reference sound signature with neutral, natural tuning, deep extended sub-bass rumble, forward presentation of mid-frequencies to bring out more focus to vocals, center-focused soundstage with more depth and height than width; easy to drive from a portable source, dongle-friendly.











I recently got the W4 ACG and it is a significant step up from my Tanchjim Stargate II.
It is warm, full body, and better in tonality . It has a dark background so details stand out but not in a harsh way, it is smooth. The overall sound is very musical, natural and rich. I am very pleased with this product!
It's sooo good,
I think It's architecture and sonic delivery is one of the most peak dongle performance!
there may be a small selection of other dongles that are on par but whichever choice it may be, the W4 doesn't disappoint at all.
This isn’t my first purchase from MusicTeck, and it’s one of my favorite places to shop for IEMs. Their selection is outstanding, and Andrew is always responsive, knowledgeable, and willing to help with any questions. Thank you, Andrew, and thank you, MusicTeck, for the excellent service!
I recently picked up the BGVP SOLOMON. It wasn’t an impulse purchase—I spent quite a bit of time reading and watching reviews, including the customer impressions here on MusicTeck. After spending some time with them, I can say that I completely agree with the positive feedback.
The SOLOMON is an impressive set of IEMs: highly detailed, technically capable, with excellent imaging and a spacious soundstage. The bass has great impact while remaining tight, controlled, and well-layered. There’s plenty of resolution across the frequency range, and the overall presentation feels refined and engaging.
I know they still need some time to fully settle in, but even straight out of the box they sound fantastic. I’m currently using Divinus Velvet Wide Bore ear tips, and for my ears this combination is simply perfect.
The BGVP SOLOMON is a gorgeous IEM with excellent build quality, premium presentation, a generous selection of accessories, and an exceptional sound that easily lives up to its reputation.
Highly recommended!
Great communication and service. Andrew is phenomenal.
Love the form factor, extremely well designed, doesn’t draw too much power and powers all my IEMs with ease
10/10 would recommend