Used Yamaha Q2031A Equalizer

Yamaha Q2031A 31-Band Stereo Graphic Equalizer

Precise, Versatile, and Road-Ready

Professional EQ Control for Studio, Stage, and Broadcast

The Yamaha Q2031A is a dual-channel 31-band graphic equalizer designed for precision sound shaping across a wide range of applications. Whether you're tuning a live rig, refining a studio mix, or controlling feedback in complex acoustic environments, the Q2031A delivers detailed control with rugged reliability.

Each channel features 31 ISO-standard 1/3 octave bands from 20 Hz to 20 kHz, with selectable ±6 dB or ±12 dB boost/cut range. High-pass filters, peak indicators, and bypass switches with LED status lights make it easy to dial in your sound and monitor performance in real time.

Highlights

• 31-band EQ per channel with ISO-standard center frequencies

• Selectable ±6 dB or ±12 dB boost/cut range

• Balanced XLR and 1/4" TRS inputs and outputs

• High-pass filter with variable cutoff (20 Hz–200 Hz)

• LED indicators for EQ status and signal peaks

• Rackmountable 2U chassis with rugged metal construction

Specifications

• Type: Stereo graphic equalizer

• Frequency Bands: 31 per channel (1/3 octave spacing)

• Frequency Range: 20 Hz – 20 kHz

• THD: < 0.05% @ +4 dB, EQ flat

• Input Impedance: 15 kΩ

• Output Impedance: 150 Ω

• Max Input/Output Level: +24 dB

• Connectors: XLR and 1/4" TRS (balanced)

• Power: Switchable 110–120V / 220–240V AC

• Dimensions: 480 x 93.4 x 230 mm (2U rack size)

• Weight: 4 kg

• Application: Live sound, studio mixing, acoustic tuning, feedback control

• Origin: Yamaha Corporation

Why Engineers Trust the Q2031A

• Ideal for shaping tone and correcting room acoustics

• Used in touring rigs, broadcast setups, and permanent installs

• Reliable performance with intuitive controls and visual feedback

The Q2031A is built for professionals who need precision and durability in every mix.

Ready to Shape Your Sound?

From subtle tonal adjustments to aggressive feedback control, the Yamaha Q2031A gives you the tools to sculpt your audio with confidence. Install it, tweak it, and let your mix shine!