Behringer SX3242FX Mixing Desk

Behringer SX3242FX — 32-Input Analog Mixer with Built-In FX for Stage and Studio

The Behringer SX3242FX is a 32-input, 4-bus analog mixing console that combines 24 studio-grade XENYX microphone preamps with dual 24-bit stereo effects processors in a single desk. Designed for live performances, houses of worship, schools, and project studios, this mixer offers the routing flexibility of a large-format console at a price that fits smaller budgets. The SX3242FX is the right choice for engineers and performers who need phantom-powered mic inputs, classic British EQ voicing, and on-board effects without carrying extra rack gear.

What Makes This Mixer Stand Out

Two of the most distinctive features are the dual 24-bit stereo FX processors and the FBQ Feedback Detection system. Each FX engine runs 99 presets covering reverb, chorus, flanger, delay, pitch shifter, and multi-effects, and the two processors can be assigned independently, allowing a vocal reverb on one channel and a slap-back delay on another at the same time. The FBQ system lights an LED on the EQ fader responsible for feedback, so the operator can pull it down in seconds instead of hunting for the offending frequency by ear. A 9-band stereo graphic EQ sits on the main mix for room correction and final tone shaping, while a dedicated Talkback section lets the engineer communicate with performers on stage.

Microphone Preamps and Channel EQ

The preamp stage defines the ceiling for any mixer's sound quality, and the SX3242FX leans on Behringer's XENYX design for its 24 mono inputs. The semi-parametric mid band on the 3-band British EQ lets the operator sweep the centre frequency anywhere from 100 Hz to 8 kHz, which is essential for taming boxy lower-mids on vocals or adding presence to snare drums.

• Mic Preamps: 24 XENYX, electronically balanced, discrete input circuit — high headroom and 130 dB dynamic range for transparent capture of both quiet and loud sources.
• Phantom Power: +48V switchable — powers condenser microphones across all 24 XLR inputs.
• Mic Channel EQ: 3-band British with semi-parametric mid (100 Hz – 8 kHz) — wider curves and warmer phase response than conventional EQ designs.

Routing, Buses, and Connectivity

Routing flexibility is what separates a small mixer from a console that can handle a full band, and the SX3242FX offers four subgroups, four aux sends per channel, and dedicated outputs for monitors, headphones, and recording.

• Number of Channels: 32 inputs (24 mono mic/line + 4 stereo channels) — covers a full band, choir, or small orchestra.
• Stereo Inputs: 4 dedicated stereo channels with Level and Aux controls — connect keyboards, playback devices, and stereo rack gear without sacrificing mono channels.
• Subgroups: 4 sub-mix buses — blend multiple channels to a single fader for easier monitor or main-mix control.
• Aux Sends: 4 per channel (2 pre/post switchable, 2 post-fader) — drive stage monitors and the two internal FX engines simultaneously.
• AUX Outs: 2 physical outputs (Aux 1, Aux 2) — feed separate monitor mixes to the stage.
• Main Outputs: Balanced XLR and 6.3 mm TRS — feed the PA with a noise-free, ground-isolated signal.
• Input Ports: 32 total — XLR, 6.3 mm TRS balanced jack, and RCA — accept microphones, line-level instruments, and consumer playback sources.

Built-In Effects, DSP, and Physical Build

The two on-board FX engines, the 9-band graphic EQ, and the FBQ feedback detector all run on a Texas Instruments DSP platform, so the operator doesn't need to patch in external effects units for most live or recording jobs. The internal autorange power supply accepts any mains voltage from 100 V to 240 V, which is essential for touring acts and travelling engineers.

• Internal Effects: 2 × 24-bit stereo FX processors, 99 presets each — reverb, chorus, flanger, delay, pitch shifter, and multi-effects assignable per channel.
• DSP: Texas Instruments 24-bit delta-sigma, 64/128-times oversampling, 46 kHz sampling rate — clean conversion with low noise floor.
• Graphic EQ: 9-band stereo on main mix — final tone shaping and room correction before the PA.
• Power Supply: Internal autorange 100 – 240 V — works on any mains voltage worldwide without step-up transformers.
• Dimensions: 100 mm × 896 mm × 410 mm (H × W × D)
• Weight: 11 kg — manageable for one person to transport to a gig.

Who Should Choose the Behringer SX3242FX

The SX3242FX is the right choice for working bands, churches, schools, and project-studio owners who need a large-format analog console without the price tag of a flagship desk. Its 24 phantom-powered XENYX preamps make it a natural fit for venues that run a full band with multiple vocalists, drum mics, and stereo keyboard rigs, while the dual FX engines and 9-band graphic EQ cover the processing needs of most live shows without external rack gear.

Volunteer-run sound teams at houses of worship and schools benefit from the intuitive top-panel layout, where every input and output is reachable without leaning behind the desk. Recording engineers tracking a small ensemble will appreciate the per-channel inserts, the talkback section for communicating with performers, and the switchable phantom power for ribbon and condenser microphones. Touring engineers will value the autorange 100 – 240 V power supply, which eliminates the need for step-up transformers when crossing borders. The SX3242FX is not rack-mountable and is best suited to installations where a dedicated mixer surface is available.

The Behringer Eurodesk Legacy

Behringer's Eurodesk line has long been associated with affordable large-format analog consoles aimed at project studios and small-to-mid-sized live venues. The SX3242FX sits in the middle of that range, pairing the company's XENYX preamp platform — praised for its 130 dB dynamic range and bandwidth extending from below 10 Hz to above 200 kHz — with British-style EQ voicing inspired by 1960s and 1970s consoles that shaped the sound of rock and roll. The FBQ Feedback Detection system, integrated into this model, draws on more than two decades of Behringer's experience building standalone feedback processors.