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Based on price data from 3 merchants for "Sonnet Technologies Echo III Rackmount 3-slot Thunderbolt 3 to PCIe Expansion System". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

In the world of modern music production, where nimble laptops and compact desktops reign, the Sonnet Technologies Echo III Rackmount 3-slot Thunderbolt 3 to PCIe Expansion System is your backstage pass to professional-grade power and versatility. Designed to bridge the gap between compact computing and expansive possibilities, this robust system allows you to connect up to three full-length PCIe cards to your Thunderbolt 3-equipped computer. Ideal for musicians, audio engineers, and video editors who demand nothing but the best, this rackmount system supports a variety of non-GPU PCIe cards, from audio DSPs to high-speed networking cards.

Harnessing the blazing speed of Thunderbolt 3, the Echo III delivers a whopping 2750 MB/s of PCIe bandwidth. It doesn’t just stop there; its dual Thunderbolt ports facilitate seamless daisy chaining, while its whisper-quiet cooling ensures your creative flow remains undisturbed. Tailored for Pro Tools HDX systems, it unlocks the full potential of your sessions without the need for a bulky tower. With a rugged steel housing and a 400W power supply, including 75W auxiliary power, this expansion system is as durable as it is powerful.

Whether you’re capturing live performances or mixing in the studio, the Echo III Rackmount is your ticket to unprecedented flexibility and performance.

Key Features:

  • Connects up to 3 full-length PCIe cards to Thunderbolt 3-equipped computers
  • 40Gbps Thunderbolt 3 interface provides 2750 MB/s PCIe bandwidth
  • Universal support for non-GPU PCIe 1.1/2.0/3.0 cards
  • Dual Thunderbolt 3 ports for easy daisy chaining of up to 5 peripherals
  • Integrated 400W power supply with 75W auxiliary power
  • Whisper-quiet cooling with dual Noctua fans
  • Supports a 5K display or dual 4K displays
  • Rugged steel 2U rackmount housing

Owner's manual

Sonnet Technologies Echo III Rackmount 3-slot Thunderbolt 3 to PCIe Expansion System User Manual

Product specs

Form Factor 2U Rackmount
Compatibility Avid Pro Tools HDX
Number of Ports 3 x Single-width Full-length Full-height PCIe Cards or 1 x Double-width PCIe Card plus 1 x Single-width PCIe Card
Connection Type 2 x Thunderbolt 3
Powered Active
Power Source Standard IEC AC cable
Dimensions 19" x 16" x 3.48"

FAQs

What types of PCIe cards can the Sonnet Echo III Rackmount support?

The Sonnet Echo III Rackmount supports up to three single-width, full-length, full-height PCIe cards, or one double-width PCIe card and one single-width PCIe card, making it versatile for various expansion needs.

Is the Sonnet Echo III Rackmount compatible with Avid Pro Tools HDX systems?

Yes, the Sonnet Echo III Rackmount is compatible with Avid Pro Tools HDX systems, allowing seamless integration for professional audio production environments.

How does the Sonnet Echo III Rackmount connect to a computer?

The Sonnet Echo III Rackmount connects to a computer via two Thunderbolt 3 ports, providing high-speed data transfer and reliable connectivity for demanding applications.

What is the power source for the Sonnet Echo III Rackmount?

The Sonnet Echo III Rackmount is powered by a standard IEC AC cable, ensuring a stable power supply for the connected PCIe cards.

What are the dimensions of the Sonnet Echo III Rackmount?

The Sonnet Echo III Rackmount measures 19 inches by 16 inches by 3.48 inches, fitting into a 2U rackmount space for efficient use in studio or production setups.

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Sonnet Technologies Echo III Rackmount 3-slot Thunderbolt 3 to PCIe Expansion System.

Features and functionality

  • The Sonnet Echo III Rackmount offers identical hardware to its desktop counterpart but in a rackmount form, with increased pricing due to the case design.

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  • The Sonnet SE1 and OWC Mercury Helios 3S provide only 15W power per Thunderbolt port, which may be insufficient for certain high-demand PCIe cards.

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Comparisons

  • While both the Sonnet and OWC enclosures are similar, eGPU enclosures are recommended for higher power needs due to their robust power delivery capabilities.

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Use cases and applications

  • The Echo III Rackmount is suitable for users needing a rackmount solution for PCIe expansion, especially in professional audio setups requiring secure, organized equipment housing.

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Value and pricing

  • The rackmount version of the Sonnet enclosure costs significantly more than the desktop version, reflecting the premium for rackmount convenience.

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