Focusrite ISA C8X USB-C Audio Interface New New - Blue

Focusrite ISA C8X USB-C Audio Interface

In modern recording environments, the signal path defines everything from initial capture to final mix. Focusrite’s ISA lineage—rooted in transformer-based studio designs—continues with the ISA C8X audio interface, a 2U rackmount system built to anchor complex sessions with clarity and control. This 26-in, 28-out USB-C audio interface combines two digitally controlled ISA preamps with six additional ultralow-noise mic channels, delivering flexible input options for full-band tracking, overdubs and hybrid workflows. High-resolution 24-bit/192kHz conversion, integrated analog tone shaping and comprehensive routing come together in a single interface designed to manage entire studio setups. Whether tracking live sessions or building layered productions, the ISA C8X interface provides a stable, recallable foundation for consistent results.

ISA Preamps and Remote Control Streamline Workflow

Two transformer-based ISA preamps sit at the core of the system, delivering up to 79dB of smooth, detailed gain with switchable impedance, balanced inserts and high-pass filtering. These channels are fully controllable from the front panel or via Focusrite Control 2, allowing engineers to adjust gain staging and routing without interrupting the session. In multiroom environments or tightly configured control rooms, remote operation becomes a major advantage, enabling consistent setups and fast recall across sessions. Once dialed in, settings remain stable, supporting long tracking days with predictable, repeatable results.

Lundahl Transformers and Expanded Mic Preamps Capture Detail

Built around Lundahl LL1538 input transformers, the ISA preamps add subtle harmonic depth and dynamic response that enhance vocals, instruments and line-level sources. Six additional mic preamps extend the system’s input capability, each designed for clean, low-noise capture with up to 69dB of gain. Together, these eight channels provide a versatile front end capable of handling everything from detailed acoustic recordings to high-SPL sources like drums and amplified instruments. The result is a balanced capture path that preserves transient detail while maintaining warmth and clarity across complex sessions.

Analog Character and Digital Control Shape Your Sound

Integrated Console and 430 Air modes allow precise tonal shaping directly within the signal path. Console mode introduces analog-style saturation and low-end weight, while 430 Air mode adds high-frequency lift inspired by classic ISA designs. These features are accessible across mic and instrument inputs, providing flexible tone control without external processing. Combined with Focusrite Control 2, engineers can adjust parameters, build routing configurations and recall session settings from desktop or mobile devices, maintaining creative momentum while keeping technical adjustments efficient and accessible.

Comprehensive I/O and Conversion Support Full Studio Setups

With 26 inputs and 28 outputs across analog and digital connections, the ISA C8X is designed to serve as the central hub of a professional studio. Fixed-gain line inputs integrate seamlessly with patchbay systems, while 12 balanced line outputs support monitoring configurations from stereo to immersive formats such as 7.1.4. ADAT, S/PDIF, MIDI and Word Clock connectivity allow expansion and synchronization with external gear, while 24-bit/192kHz AD/DA conversion delivers up to 125dB of dynamic range with ultra-low distortion. This combination of connectivity and fidelity ensures consistent performance across tracking, mixing and monitoring workflows.

An Interface Built for Modern Studio Demands

From tracking full ensembles to managing hybrid analog-digital workflows, this interface adapts to the realities of modern production environments. Independent headphone outputs, low-latency monitoring and recallable routing support efficient collaboration and fast-paced sessions, while its rackmount design integrates cleanly into permanent studio installations. Designed for engineers, producers and studios that require high channel counts, flexible control and reliable sonic performance, the Focusrite ISA C8X Audio Interface delivers a complete recording and routing solution built for professional use.

Focusrite Hitmaker Expansion Software Bundle Included

Every eligible Focusrite interface includes the Hitmaker Expansion software bundle, a comprehensive collection of professional production tools designed to help you write, record, mix and master music with confidence. Included titles span every stage of the creative process, from pitch correction and virtual instruments to mixing, mastering and distribution. The bundle includes Brainworx bx_console Focusrite SC, Celemony Melodyne Essential, Focusrite Red 2 & 3 Plug-in Suite, Klevgrand Korvpressor, Klevgrand REAMP, Landr Studio with five free masters, Native Instruments MASSIVE, Relab LX480 Essentials, Softube Flow Guitar Essentials, Sonnox Soften, Sonnox VoxDoubler, XLN Audio Addictive Drums 2: Studio Rock and XLN Audio Addictive Keys. Together, these industry-respected tools provide a complete production environment capable of delivering release-ready results right out of the box.

Features

• Flagship 26x28 USB-C audio interface with ISA preamps and full studio control
• Two ISA preamps with Lundahl transformers deliver depth warmth and detail
• Console and 430 Air modes add saturation and high-end clarity on demand
• Six additional mic preamps provide clean gain with analog-style drive control
• Switchable impedance and high-pass filtering optimize mic and instrument inputs
• 24-bit/192kHz conversion with 125dB dynamic range ensures precise capture
• 26-in 28-out design supports full tracking mixing and immersive workflows
• 12 balanced outputs enable stereo multi-speaker and 7.1.4 monitoring setups
• Auto Gain and Focusrite Control 2 streamline setup routing and recall
• ADAT S/PDIF MIDI and Word Clock expand integration with studio systems
• Dual headphone outputs with independent control support detailed monitoring

SpecsGeneral

• Product type: USB audio interface
• Model: ISA C8X
• Form factor: Rackmount (2U)
• Simultaneous I/O: 26 × 28 (including loopback)

Connectivity

• USB: USB-C (USB 2.0)
• MIDI: 1 × In, 1 × Out
• ADAT: 2 × In, 2 × Out (16 ch @ 44.1/48kHz, 8 ch @ 96kHz)
• S/PDIF: 1 × In, 1 × Out
• Word clock: 1 × In, 1 × Out
• Loopback: Yes
• Talkback: Yes

Inputs

• Mic preamps: 8
• Line inputs: 8
• Instrument inputs: 2
• Insert sends/returns: 2

Outputs

• Line outputs: 10
• Headphone outputs: 2

Audio Conversion

• Bit depth / sample rate: 24-bit/192kHz

Microphone Inputs (Channels 1–2)

• Frequency response: 20Hz–20kHz ±0.4dB
• Dynamic range: 117dB
• THD+N: -93dB
• EIN: -128dB
• Maximum input level: +16dBu
• Gain range: 79dB
• Input impedance: 800 ohm, 1400 ohm, 2400 ohm, 7000 ohm (switchable)
• High-pass filter: 75Hz, 18dB/oct

Microphone Inputs (Channels 3–8)

• Frequency response: 20Hz–20kHz ±0.1dB
• Dynamic range: 116dB
• THD+N: -100dB
• EIN: -127dB
• Maximum input level: +16dBu
• Gain range: 69dB
• Input impedance: 3200 ohm

Instrument Inputs

• Frequency response: 20Hz–20kHz ±0.5dB
• Dynamic range: 117dB
• THD+N: -89dB
• Maximum input level: +14dBu
• Gain range: 79dB
• Input impedance: 400 kohm, 1.2 Mohm (switchable)

Line Inputs

• Frequency response: 20Hz–20kHz ±0.05dB
• Dynamic range: 120dB
• THD+N: < -105dB
• Maximum input level: +24dBu

Inserts

• Connection: Balanced
• Maximum send level: +16dBu
• Maximum return level: +16dBu

Line Outputs

• Frequency response: 20Hz–20kHz ±0.02dB
• Dynamic range: 125dB
• THD+N: -113dB
• Maximum output level: +24dBu

Headphone Outputs

• Frequency response: 20Hz–20kHz ±0.1dB
• Dynamic range: 114–116dB
• THD+N: -102dB to -110dB
• Maximum output level: +8dBu to +11dBu
• Maximum power: 130mW (33 ohm), 28mW (300 ohm), 14mW (600 ohm)
• Output impedance: 3 ohm

Power

• Power consumption: 40W max
• Bus powered: No

Compatibility

• Windows: Intel, AMD, Arm64
• macOS: Intel, Apple Silicon
• Linux: Class compliant (not officially supported)

Other

• Included accessories: USB-C cable, IEC power cable, rubber feet