YG Acoustics Sonja 3.3 Floorstanding loudspeakers


Available in Silver and Black.

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Sonja 3.3 is a true, reference loudspeaker with the life-like, natural sound which is the hallmark of YG. Capable of delicate holographic imaging while still recreating concert scale audio, it is one of the very best loudspeakers in the world. With the revolutionary Lattice tweeter, twin BilletCore midrange drivers, twin BilletCore bass drivers and our innovative Ultra- coherent crossover, it combines astonishing sonic performance with fine engineering and craftsmanship.

The Reference speakers are structured from high-grade aerospace aluminum, machined in-house to an incredible precision. The speakers are meticulously hand-built by experts in our Colorado workshop.

The Reference 3 models include new technologies and design innovations based on novel theoretical models, detailed multi-domain simulations and thousands of hours of listening. The end result: loudspeakers which convey every nuance of emotion, each musical cue from the tiniest microdetail to the visceral impact of the most thunderous crescendo.

An entirely new, hybrid Lattice tweeter uses a novel airframe in a specially-selected aerospace alloy, machined by YG Acoustics. It delivers exceptionally low distortion over a huge bandwidth, with wide angular dispersion to support a large sweet-spot.

Groundbreaking, third-generation Ultracoherent crossovers apply a deep understanding from simulation to deliver performance never before possible.

Our BilletCore drivers use advanced motors and cones machined in-house from solid billet, offering some of the highest performance and lowest distortion in any driver available today.

Speaker Type

  • 3-way passive floor-standing loudspeaker
  • Dual layer aerospace aluminum cabinet with constrained layer damping


  • Lattice hybrid tweeter with advanced airframe
  • Dual 15 cm (6”) BilletCore driver with advanced neodymium motor magnets
  • Dual 26 cm (10.25”) BilletCore driver with ultra-high field strength motor


  • Ultracoherent crossovers at 90 Hz and 1.85 kHz
  • Exceptional phase alignment: ±5° relative phase over range where driver relative output is within 20 dB
  • Optimized for phase alignment, phase slope and transient response Custom capacitors including pure metal foil models
  • Advanced resistors including multiple foil resistors for exceptional imaging and transient response
  • Advanced resonance-damped inductors Computationally optimised layouts to minimise component interactions


  • Usable output extends from below 20 Hz to 40 kHz
  • Exceptionally low distortion throughout range
  • Excellent pair matching


  • 88 dB


  • 4 Ohms average
  • 2.8 Ohms minimum


  • 179 × 43 × 72 cm (H × W × D)
  • 70 × 17 × 28” (H × W × D)


  • 225 kg per speaker
  • 495 lbs per speaker


  • Standard finishes are silver and black
  • Please contact your dealer for other finish options

Additional information


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