Skip to content


APEX(Audio Products of Excellence)사는 품질을 우선으로하는 이름 그 자체에 의미를 담고 있습니다. APEX사는 1990년 이후 프로오디오 시장을 시작으로 PE-133 싱글 디바이스에 그래픽EQ와 멀티 파라미터/놋치 필터를 내장한 제품을 시작, 파라그래픽EQ 역시 시장에 첫선을 보였습니다. APEX의 목표는 항상 음향의 고품질을 위한 혁신적인 디자인의 아날로그 및 디지털 제품개발에 있습니다. 풍부한 경험자와 젊은 엔지니어로 구성된 팀웍을 바탕으로 현 프로오디오 시장에서 오늘도 새로운 제품개발을 위해 노력하고 있습니다.



  • constant-Q design for a real graphic representation by minimising adjacent band interaction
  • DLT-technology for ultra accurate and artefact-less frequency, phase and amplitude response
  • 45 mm precision faders
  • 30-band constant-Q graphic equaliser using DLT-technology for perfectly flat amplitude and phase response
  • in/out switches for instant comparison with flat response
  • variable high-pass and low-pass filters with switch-able 6/12 dB slope on low-pass
  • level adjustment from -infinity to +6 dB
  • overload indicator driven by a peak-peak sensing circuit giving overload indication at all critical points of the equaliser circuit
  • power failure bypass relays
  • electronically balanced input and output on XLR
  • earth-lift switch
  • robust mechanical construction

The heart of the Apex GX-130 equaliser is a bank of 30 constant-Q bandpass filter made with Dynamically Laser Trimmed (DLT) hybrid circuits. The DLT-technology offers you ultra accuracy and artefact-less frequency, phase and amplitude response. The constant-Q design preserves filter bandwidth independent from the amplitude control settings and therefore minimises the adjacent band interaction. Constant-Q reinforces the graphical representation by the front panel faders of the actual frequency response.

The GX-130 equaliser has also frequency adjustable high-pass and low-pass filters.

All potential overload points are continuously monitored by an extremely fast attack, slow release time peak detector circuit illuminating a LED indicator 2 dB before the clipping point is reached, warning the user to reduce the level before distortion occurs.

In case of mains power failure, relays automatically bypass the equaliser by connecting each input directly to its output instantaneously.




  • sound reinforcement
  • fixed installations