Review : BGVP DMS – Next in line



For the nit-pickers and nerdy ones here, I’m giving the specs and technical sheets . For all the others, you can just go to the next page to see how the DMG performs.

Hybrid configuration (Dynamic + Balanced)

The BGVP DMS is powered by a set of seven drivers.

Yes, you read that right: this 150$/€ IEM is getting seven drivers. Six of them are balanced armatures, where the last one is a dynamic unit. As usual, the balanced armatures take care of the highs and mids, where the dynamic driver is dedicated to the lows.

The dynamic unit enjoys a custom-made N52 magnetic circuit + CCAV voice coil and a gold-plated metal shielding shell. That’s a lot of information, but let’s focus on what matters to us: the diaphragm is 10mm wide, so if the sound engineers made the right choices, the BGVP DMS should be able to get us pretty deep bass.

The balanced units are arranged like this :

  • 1x SWFK0-31736, dedicated to the high and ultra-high frequencies
  • 2x DEK-60318, dedicated to the mids and lower mids

All of those are dual-bodied, that’s how the brand can brag about its seven driver configuration. The brand promises us a carefully calibrated frequency response curve with rich vocal details, beautiful and airy high-frequencies and right low frequencies.

Like the BGVP DM7, the DMS uses a 4-Way Crossover / 2-bore system. Each channel carries a part of the frequency range to give a smoother curve: low, medium, high and very high. BGVP inaugurates an all-new setup with Knowles filters (x3) and a patented acoustic damper which should offer the best layering.

The technical sheets are available on Knowles and Sonion website but that’s only half of the truth. We saw many great tweeters with amazing design awfully tuned on disastrous IEMs… Let’s hope that’s not the case here, but from what we saw previously, BGVP never failed us… yet!

3D Printed plate + CNC milled shell

When you think of a seven driver IEM, you imagine an incredible piece of engineering with one person dedicated to the assembly.

That is still the norm for some CIEMs, but when you want to sell your IEM for less than 150$, you have to either make a compromise or be smart. Thankfully, it seems like BGVP chose to be smart.

The BGVP DMS combines two modern technologies :

  • CNC milling for the shell. Made of two parts, the main body, and the faceplate, all the other pieces are then tightly encapsulated inside, so human intervention can be kept to the minimum.
  • 3D Printing for the bracket structure. This small piece of plastic holds the seven drivers while acting as a crossover. It’s pretty simple from an outside point of view, but arranging the right piece means taking in to count complex sound modulations. Not so bad for a not-so-famous brand.

Again, BGVP states that the left and right channel error is within 1dB, which is somehow similar to man-made error margins.

Full specs

  • Type : IEM
  • Style : Balanced drivers x6 + dynamic driver x1
  • Crossover : 4 way / 2 tubes
  • Drivers : Knowles / Sonion drivers + composite dynamic diaphragm
  • Socket : MMCX (detachable cables)
  • Cable : 5N 6 core 400 wire OCC + Silver (L-shaped plug)
  • Shell : CNC milled aluminium
  • Frequency response Range : 10Hz – 40kHz
  • Sensitivity : 110dB SPL/mW
  • Impedance : 12 ohms
  • Price : 149$

The review continues on Page Four, after the click HERE or by using the jump below.


A nerdy guy with a passion for audio and gadgets, he likes to combine his DAC and his swiss knife. Even after more than 10 years of experience, Nanotechnos still collects all gear he gets, even his first MPMAN MP3 player. He likes spreadsheets, technical specs and all this amazing(ly boring) numbers. But most of all, he loves music: electro, classical, dubstep, Debussy : the daily playlist.

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