What are the best professional-grade Thunderbolt audio interfaces?

The Universal Audio Apollo x8p is a professional rackmount Thunderbolt audio interface with eight Unison mic preamps, 16 x 22 I/O, 24-bit / 192 kHz conversion, and HEXA Core DSP for real-time UAD plug-in processing. It suits recording engineers, producers, and professional studios tracking large ensembles or full-band sessions.

The Apollo x4 Gen 2 is a professional desktop Thunderbolt audio interface with four Unison microphone preamps, 24-bit/192 kHz conversion, Quad Core DSP, and real-time UAD plug-in processing. It suits producers, engineers, and musicians who need high-quality recording, monitoring, and expandable studio connectivity.

The Apollo x16D is a rackmount Thunderbolt 3 interface with 18 x 20 audio I/O, 16 x 16 Dante networking, 24-bit/192 kHz conversion, and HEXA Core UAD processing. It suits professional studios, live sound venues, broadcast facilities, and immersive audio systems that need low-latency plug-in processing and scalable networked audio.

The Apollo x8p Gen 2 is a professional rackmount Thunderbolt audio interface with eight Unison mic preamps, 16-in / 22-out connectivity, 24-bit / 192 kHz conversion, and HEXA Core DSP for near-zero-latency UAD plug-in processing. It suits recording studios, producers, engineers, and bands handling large sessions that need high channel counts and real-time analog-style processing.

The Apollo x6 Gen 2 is a rackmount Thunderbolt 3 interface with 16 inputs, 22 outputs, two Unison mic preamps, HEXA Core DSP, and high-resolution 24-bit/192 kHz conversion. It suits professional producers, recording engineers, and project studios needing premium monitoring, real-time UAD processing, and flexible surround-capable connectivity.

The Apollo x16 Gen 2 is a professional rackmount interface with 16 x 16 analog line I/O, 24-bit 192 kHz conversion, Thunderbolt 3 connectivity, and HEXA Core DSP for near-zero-latency UAD plug-in processing. It suits professional recording, mixing, postproduction, and immersive audio studios that need extensive connectivity and high-resolution monitoring.

This modular Symphony I/O MKII Thunderbolt 3 system ships with two 16x16SE I/O modules, giving 32x32 analog audio plus coaxial S/PDIF I/O. It uses a touchscreen-controlled Thunderbolt 3 chassis for studio monitoring and routing in a professional Mac-based workflow. It is aimed at Dolby Atmos and immersive-audio capable studios that need high channel counts in a single Thunderbolt interface.

The RME Fireface 802 FS AE is a 60-channel professional USB 2.0 interface with operation up to 192 kHz and a built-in TotalMix FX DSP mixer for latency-free routing and monitoring. It includes multiple analog and digital I/O (including ADAT, AES/EBU, and S/PDIF) plus DC-coupled analog outputs for CV/gate control. It suits studios and live setups that need stable, high-channel-count audio with advanced internal DSP mixing.

The Universal Audio Apollo x6 is a rackmount Thunderbolt 3 audio interface with 16 inputs, 22 outputs, two Unison mic preamps, and HEXA Core DSP for real-time UAD plug-in processing. Its 24-bit / 192 kHz conversion, surround monitoring support, ADAT and S/PDIF connectivity, and external power supply suit professional studios, producers, and engineers using outboard gear.

The Universal Audio Apollo x8 is a professional rackmount Thunderbolt audio interface with four Unison mic preamps, extensive analog and digital I/O, and onboard HEXA Core DSP for real-time UAD plug-in processing. Its high-resolution 24-bit, 192 kHz conversion and surround monitoring support make it well suited to serious project studios and commercial production environments.