The Yamaha Q1027 is a professional, 27-band 1/3-octave mono graphic equalizer designed for studio and live applications. It provides ±12dB boost/cut control, high-precision slide potentiometers, and a sturdy 2U rack-mount design, featuring center frequencies from 40Hz to 16kHz. 

Reverb +4

Key Technical Specifications & Features:

• Channels: Mono (1 Channel).
• Bands: 27 bands, 1/3-octave spacing (40Hz to 16kHz).
• Frequency Response: 20Hz – 20kHz, 
  
  
  
   (Phone jack), 
  
  
  
   (XLR).
• Boost/Cut Range: 
  
  
  .
• High-Pass Filter: Switchable 12dB/octave roll-off below desired frequency.
• Input/Output Connectors: Balanced XLR and unbalanced 1/4" phone jacks.
• Max Output Level: +24dB (
  
  
  
   load).
• Total Harmonic Distortion: Less than 
  
  
   (Phone) to 
  
  
   (XLR).
• Dimensions/Form: 2U Rack Mountable (approx. 18 lbs)