• Gravitas NB-M
  • Gravitas NB-M
  • Gravitas NB-M
  • Gravitas NB-M
  • Gravitas NB-M
  • Gravitas NB-M


APL Hi-Fi Gravitas NB-M : 


End of life!

The Gravitas No Boundaries Master speaker system is an all-hand-made boutique, specially designed for audiophiles searching a true tonal balance.
Our goal was to design a speaker that does not sacrifice top or bottom extension, yet it is very natural, realistic and inviting in the midrange where the human ear is most sensitive.
The Gravitas NB-M was born after many years of development and endless experiments, the drivers, crossover components, enclosure design and proprietary treatments were specially selected for the most natural and true-to-live sonic character possible.

The first Gravitas prototype was very well received by audiophiles and reviewers at T.H.E. Show 2006 in Las Vegas. After another 8 years of hard work, the NB-M speaker system has been completely finalized to a point that makes us extremely happy with the result.


Super Tweeter Unit
  • Ribbon driver with very smooth frequency extension.
  • Crossover fine-tuned to just extend the Main Unit tweeter top-end response.
  • Oxygen Free Copper inductors.
  • Special Film capacitors.
Main Unit
  • Two 7-inch Scan-Speak Revelator mid-bass drivers with resonance-free, laser-cut paper cones.
  • One 1-inch silk dome Scan-Speak Revelator tweeter.
  • Ferrite magnets for all drivers, no Neodymium magnet material altering natural tonal balance.
  • First order, impedance corrected crossovers.
  • Point-to-point internal wiring using solid Oxygen Free Copper.
  • Audience-AV Auricap XO capacitor for tweeter coupling.
  • Oxygen Free Copper inductors.
  • Enclosures made with special internal materials greatly reducing vibrations.
  • Rear vent enclosure design.
  • WBT Next-Gen speaker terminals.
Sub Bass Unit
  • Two 9-inch Revelator drivers. One active one passive.
  • Custom hand-made power inductors.
  • Crossover fine-tuned to just extend the Main Unit low-end bass response.
  • Enclosures made with layers of special materials for greatly reduced vibrations.
  • Sealed enclosure, passive radiator design.
  • WBT Next-Gen speaker terminals.
Finishes and convenience
  • Deep high gloss piano hand-polished lacquer finish.
  • Available in original Ferrari Red, Black or White. Please specify when ordering.
  • Custom made heavy-duty stainless-steel adjustable feet.
  • Custom made dense Main Unit rear port foam plugs for better in-room tuning.

2-years warranty, with an available 3-year extension, when registered on the APL Hi-Fi website.


Super Tweeter Unit
  • Ribbon Tweeter.
  • Frequency response 18.5kHz to 40kHz.
  • Impedance: 6 Ohms.
  • W165 x H155 x D205 millimeters.
  • 2.5kg unpacked.
Main Unit
  • Silk Dome Tweeter.
  • Paper Cone mid-woofers.
  • MTM arrangement.
  • Rear-ported enclosure.
  • Supplied hard foam port plugs.
  • Frequency response: 40Hz to 18.5kHz.
  • Impedance: 4 Ohms.
  • W285 x H610 x D435 millimeters.
  • 30kg unpacked.
Sub Bass Unit
  • Aluminum Cone Active bass driver.
  • Aluminum Cone Passive Radiator.
  • Sealed Enclosure.
  • Frequency response from 19Hz to 40Hz.
  • Impedance: 4 Ohms.
  • W285 x H610 x D435 millimeters.
  • 35kg unpacked.
Enclosure Finishes
  • High-Gloss Deep Piano Lacquer.
  • Matt Lacquer available on request.
  • Special colors available on request.
  • Note! Wood veneer finishes are not available.


Gravitas NB-M

€15,000.00 EUR €25,000.00 EUR




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