NuForce Primo8 Earphones
NuForce Primo8 Earphones

High-Performance IEMs

Packing a whole lot of tech into a compact, metallic-blue package, the Optoma NuForce Primo8 delivers a bright, clear sound and an extremely secure fit. Along with a convenient detachable cable, the IEMs come with a treasure chest of accessories: 10 pairs of eartips, a gold-plated quarter-inch adapter, and a silky microfiber cleaning cloth, to name a few. To see what the audiophile community has to say, check out HeadphoneAddict's review on Head-Fi, and these reviews on Home Theater High Fidelity and Sound Stage Experience.

Note: Due to high demand from the Massdrop community, NuForce has agreed to offer more Primo8 IEMs, a previously retired product. This drop is limited to 200 units.

NuForce Primo8 Earphones

Clear Sound, Convenient Features

The Primo8’s resin shell and metal inner layer minimize vibrations for a crisp audio experience, and the ear hangers can be shaped to your ear for personalized comfort. Inside each earphone, four balanced armature drivers, arranged in a three-way crossover design, produce a natural, fully dimensional soundstage with excellent dynamics. The 4.6-foot, tangle-free cord features a smartphone-compatible inline remote, so you can skip tracks and answer calls with ease.

NuForce Primo8 Earphones
NuForce Primo8 Earphones
NuForce Primo8 Earphones


  • Optoma NuForce
  • Material, shell: Resin, metallic-blue finish
  • Material, inner layer: Metal
  • Driver type: Balanced armature
  • Driver size: 8 x 7 x 6 mm
  • Crossover type: Linear-phase first-order Butterworth alignment
  • Connector type: 1/4 in (3.5 mm) 4-pole stereo
  • Impedance: 38 ohm
  • Max input power: 5 mW
  • Max input sound level: 121 dB SPL
  • Microphone sensitivity: -42 dB +/- 5 dB
  • Frequency response: 18 Hz–22 kHz
  • Sensitivity: 118 dB +/- 3 dB
  • Cable: 4.6 ft (1.4 m) long, detachable
  • Weight: 0.7 oz (19.3 g)


  • 2 pairs of Comply foam ear tips (M, L)
  • 8 pairs of silicone ear tips (S, M, L, XL)
  • Gold-plated 1/4 in (3.5 mm) adapter
  • Airline adapter
  • Cable clip
  • Microfiber cleaning cloth
  • Cleaning tool
  • Leather carrying pouch
  • 1-year warranty


All orders will be shipped by Massdrop.

Estimated ship date is Feb 22, 2018 PT.

After the drop ends, payment will be collected. To deliver the best value to the group the request will then be submitted to the vendor up front, making all sales final. Be sure to check the discussion page for updates.