Sonnet Echo III TB3 3-SLOT PCIe Expansion Rack

Sonnet Echo III Rackmount is a professional Thunderbolt-to-PCIe expansion system made for modern computers that need serious studio-grade expansion. It lets you connect up to three full-length PCIe cards to a Mac, Windows, or Linux computer with Thunderbolt 3 or Thunderbolt 4, all through a single cable.

For audio and post-production rooms, this is the kind of box that solves real-world problems. Need to run Pro Tools | HDX, audio DSP, video capture, high-speed networking, SAS/SATA storage, or other non-GPU PCIe cards from a laptop, Mac mini, iMac, or compact workstation? Echo III Rackmount gives those cards a proper 2U home with quiet cooling, a 400W power supply, and a 40Gbps Thunderbolt connection.

Built into a rugged steel rackmount enclosure, it supports three full-height, single-width cards, or one double-width card plus one single-width card. It is Avid qualified, Pro Tools | HDX compatible, and designed for professional studios where reliability, low noise, and clean rack integration matter.

Main Features

* Thunderbolt 3-to-PCIe card expansion system
* Compatible with Thunderbolt 3 and Thunderbolt 4 computers
* Supports Mac, Windows 10, and Linux systems
* Connects up to three non-GPU PCIe cards
* Supports PCIe 4.0, 3.0, 2.0, and 1.1 cards
* Three PCIe slots: one x16 and two x8
* Supports three full-height, single-width cards
* Supports one double-width card plus one single-width card
* Accepts full-length cards up to 12.28 inches
* Pro Tools | HDX compatible
* Avid qualified
* Suitable for audio DSP, video capture, transcoding, SAS/SATA, Ethernet, SSD storage, and specialty PCIe cards
* 40Gbps Thunderbolt interface
* Two Thunderbolt ports, one for computer connection and one for daisy-chaining
* Integrated 400W power supply with 75W auxiliary power
* Automatic power on/off with the computer
* Quiet Noctua fans rated at 17 dBA
* Rugged 2U steel rackmount enclosure
* Space for optional future expansion
* Designed and made in the USA

Serial no #C01320021001300

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.