Introducing the miniDSP Flex 2×4 Audio Processor

The miniDSP Flex 2×4 is a range of compact, high-performance 2 in / 4 out audio processors tailored for audiophiles who demand precision and flexibility in their stereo systems. With powerful DSP capabilities and multiple connectivity options, Flex 2×4 is ideal or setups where simplicity and sound optimisation are paramount. Designed for customisation, the Flex offers everything from equalisation to crossover and room correction options, making it an exceptional tool for fine-tuning audio performance.

Compact Design and Advanced DSP

Compact yet robust, the miniDSP Flex 2×4 brings advanced DSP technology in a streamlined package. Its intuitive interface and 32-bit floating-point processor allow users to personalise their audio experience with precise adjustments to match room acoustics and individual preferences, delivering balanced and engaging sound.

Three Versions

The Flex 2×4 is available in three versions. They all have the same DSP capabilities, but differ in the available input and output options. All versions have USB, coaxial, optical and Bluetooth digital inputs, in addition to:

• Analogue (RCA) inputs and outputs. The standard Flex 2×4 model has two analogue inputs and four analogue outputs. The analogue inputs and outputs are presented as industry-standard RCA connections.
• Balanced analogue (TRS) inputs and outputs. Flex Balanced has two balanced analogue inputs and four balanced analogue outputs. The analogue inputs and outputs are presented as space-saving TRS jacks. Flex Balanced is ideal for studio use or for home audio systems using balanced connections.
• Analogue (RCA) inputs with digital (RCA coaxial and Toslink optical) outputs. Flex Digital has two analogue input channels and four digital output channels. The output channels are presented as both RCA coaxial and Toslink optical connections, for maximum flexibility. Flex Digital is designed to be used with external DACs.

Digital Connectivity

All versions of the miniDSP Flex 2×4 include USB, coaxial, optical and Bluetooth digital inputs. Flex’s USB input also supports bi-directional audio, enabling audio output from the Flex back to a macOS or Windows computer. This feature is typically used with recording software for archiving audio, but it has broader applications. We use it with an oscilloscope app to assist in setting up turntables accurately.

Dirac Live Room Correction

For the ultimate in sound optimisation, the miniDSP Flex supports Dirac Live, a powerful room correction technology that adapts audio to the unique acoustic characteristics of any space. By analysing frequency response and phase, Dirac Live reduces unwanted colouration and improves clarity and imaging, creating a more immersive listening experience.

Flex owners can easily purchase a Dirac Live licence through the Device Console companion app, enabling a seamless setup and custom calibration that unlocks the full potential of their audio system.

Key Features

• High-Precision DSP Engine: 32-bit floating-point processor for advanced digital signal processing.
• Room Correction Compatibility: Optional Dirac Live for tailored room optimisation.
• Versatile Connectivity: Available in a range of input / output options to suit every system.
• Matrix Mixer. Route any input channel to any output channel. Mix both inputs to mono when required.
• Compact, Elegant Design: Fits seamlessly into any system or listening space.
• Customisation Options: User-adjustable EQ, crossover, and delay settings for refined sound control.
• User-Friendly Interface: Simple controls for easy configuration and quick adjustments.

The miniDSP Flex provides a streamlined solution for audio enthusiasts aiming to elevate their sound system with powerful, precise DSP capabilities. Enhance your listening experience with the Flex’s versatile customisation and room correction features.

Measurement Microphones

If you are planning to use your Flex processor for room correction, you will need a microphone to capture acoustic measurements, together with a computer and software like Room EQ Wizard or Dirac Live. We recommend the miniDSP UMIK-1 calibrated measurement microphone for most room correction tasks.

If you need to measure beyond the audible range and into the ultrasonic, such as when designing your own speakers, take a look at the miniDSP UMIK-2 calibrated measurement microphone.