SKU: 88325535812

Apogee SYMPHONY I/O MKII 16x16SE THUNDERBOLT 3 40th Anniversary Edition Audio Interface

$4947.75 $5497.50
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Description

Apogee SYMPHONY I/O MKII 16x16SE THUNDERBOLT 3 40th Anniversary Edition Audio InterfaceCelebrating 40 years of innovation in digital audio technology, the Apogee Symphony I O Mk II 16x16SE Thunderbolt 3 Audio Interface (40th Anniversary Edition) stands out as a top tier choice for professionals seeking exceptional audio conversion quality, modular flexibility, and seamless integration into high end recording, mixing, and mastering environments. Equipped with the Thunderbolt 3 Option Card, this interface delivers ultrafast data transfer

Celebrating 40 years of innovation in digital-audio technology, the Apogee Symphony I/O Mk II 16x16SE Thunderbolt 3 Audio Interface (40th Anniversary Edition) stands out as a top-tier choice for professionals seeking exceptional audio-conversion quality, modular flexibility, and seamless integration into high-end recording, mixing, and mastering environments. 

Equipped with the Thunderbolt 3 Option Card, this interface delivers ultrafast data transfer and dramatically low latency. The 16x16SE I/O Module provides 16 channels of pristine analog line-level input and output via four DB-25 connectors, plus 2 channels of S/PDIF I/O via RCA. Utilizing Apogee’s most advanced AD/DA conversion technology, the Symphony I/O Mk II delivers world-class 24-bit / 192 kHz resolution with exceptional detail, transparency, and dynamic range. Additional features include an intuitive front-panel touchscreen display, precision control knob, and a dedicated headphone output for critical monitoring. With Dolby Atmos readiness, it’s perfectly suited for immersive audio-production environments.

Exclusive 40th Anniversary Edition
The Symphony I/O MkII 40th Anniversary Edition is a testament to innovation and superior sound quality. Only 100 of this Anniversary Edition will be produced worldwide, making it a truly collectible item.

Each unit features

  • A striking all-purple faceplate with a commemorative 40th Anniversary badge.
  • The Thunderbolt 3 Option Card preinstalled.
  • A deluxe hard-bound anniversary book celebrating Apogee’s four decades of digital audio excellence.
  • It is designed in California and built in the USA with uncompromising attention to detail.
Immersive Audio Monitoring Made Easy
  • With Apogee's advanced Monitor Workflows, configuring and managing multichannel speaker setups is simple.
  • Support for Dolby Atmos, Sony 360 Reality Audio, and other immersive formats allows for up to 32 speaker outputs, making the Symphony I/O Mk II a future-ready centerpiece for spatial audio production.
Modular Connectivity, Maximum Flexibility
Tailor the Symphony I/O Mk II to your studio’s needs with three platform options:
  • Thunderbolt 3 for ultralow-latency native workflows.
  • Pro Tools + Dante for seamless integration with AVB networks and Pro Tools HD systems.
  • Waves SoundGrid for real-time plug-in processing in live and studio environments.
Additional Details
  • 16x16SE I/O module: 16x16 line-level analog I/O on four DB-25 connectors
  • S/PDIF I/O: 2x2 digital I/O on two RCA connectors
  • Wordclock I/O
  • Low-latency, 24-bit / 192 kHz audio
  • Front-panel headphones out

Specifications

General
Display
1x Color Touchscreen
Channels of I/O
Analog:
16 Inputs / 16 Outputs
S/PDIF:
2 Inputs / 2 Outputs
Maximum Sampling Rate
192 kHz / 24-Bit
Number of Microphone Inputs
No
Built-In Microphone
No
Input Level Adjustment
Knob
Signal Processing
Pad
No
High-Pass Filter
No
Solo/Mute
No
Connectivity
Analog Audio I/O
2x DB-25 Balanced Line Input
1x 1/4" TRS Headphone Output
2x DB-25 Balanced Line Output
Phantom Power
No
Digital Audio I/O
1x RCA Coaxial S/PDIF Input
1x RCA Coaxial S/PDIF Output
Host Connection
2x USB-C
Host Connection Protocol
Thunderbolt 3
USB (Non-Host)
No
Sync I/O
1x BNC Word Clock Input
1x BNC Word Clock Output
Network I/O
No
MIDI I/O
No
Expansion Slots
1x I/O Slot
1x Host Connection Slot
Wireless
No
Performance
Frequency Response
Line A/D Converters:
10 Hz to 20 kHz 0.05 dB (at 44.1 kHz)
Maximum Input Level
Line:
+24 dBu (+4 dBu ref)
+6 dBu (-10 dBV ref)
Maximum Output Level
Line:
+24 dBu
Impedance
Line Inputs:
10 Kilohms
Line Outputs:
25 Ohms
Dynamic Range
Headphone:
121 dBA
Line Inputs:
122 dBA
Line Outputs:
126 dBA
THD+N
Line Inputs:
-115 dB
Line Outputs:
-119 dB
Headphone Outputs:
-110 dB (into 600 Ohms)
-101 dB (into 32 Ohms)
Digital Audio
Sample Rates
Up to 192 kHz
Sample Rate Conversion
No
Bit Depths
24-Bit
Sync Sources
Internal, S/PDIF, Word Clock
Audio Storage & Playback
Media/Memory Card Slot
No
Compatibility
OS Compatibility
macOS
Mobile Device Compatibility
No
Power
Power Requirements
AC Input
AC Input Power
90 to 240 VAC, 50 / 60 Hz
Power Consumption
150 W
Physical
Rackmount Size
2 U (with Included Hardware)
Dimensions
19 x 11.5 x 3.5" / 48.3 x 29.2 x 8.9 cm (with Rack Ears)
Packaging Info
Package Weight
19.165 lb
Box Dimensions (LxWxH)
22.5 x 17.3 x 10"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 88325535812

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4.8 ★★★★★
Based on 29 reviews
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Product Reviews
J
Verified Purchase
Jana
Charlottesville, US
★★★★★ 4
Awesome
Size: 32 oz
Works as advertised. Just don't scrimp... give it the full recommended amount in each tire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
K
Verified Purchase
kevin weir
Carnegie, US
★★★★★ 5
This tire sealant works very well
Size: 16 oz
So far so good. Cheaper and easier that tubing a leaking tire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
J
Verified Purchase
Jerry D
Fort Morgan, US
★★★★★ 3
Hard to install as instructed.
Size: 32 oz
Nearly impossible to get it in the tire through the valve. Yes I removed the valve core. Broke the bead on the tire and dumped it in. That worked great! So far no leaks. They should definitely redesign the installation method.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
B
Verified Purchase
bsync
Phoenix, US
★★★★★ 5
Been using it for 15 years! Not sure where the Neg reviews come from?
Size: 16 oz
I've been using Liquitube since around 2010. I use it religiously in my ATVs and lawn tractor tires. Since I've been using this stuff, I've never had a flat before. I've pulled out nails and slivers of steel out of my ATV tires but yet none of them lose air or go flat. I think some of the negative reviews come from improper use of the product or not enough of the product is being used in the tires. I think this come from variance in formula charts that Liquitube has had in the past on their bottles and on their website. The chart on their website wouldn't match the formula that was provided on the bottle. So I think alot of people get mixed up and not knowing the correct amount to add to each tire. Now Liquitube just puts pictures on the side of the bottle with an ounce measurement below each picture to tell people how to use it. But even that can be confusing. For instance, take the picture of the ATV that they show. Below the ATV it says 32oz. Now some people probably think the 32oz is for the entire ATV. Well that isn't the case. They want you to use 32oz Per Tire! Years ago Liquitube even used to say on the bottle to use 32oz per tire on an ATV. Now they just show a picture with an amount below it. Now you'll come to find out that the 32oz they recommend doesn't match up to the formula they tell you to use to calculate how much each tire is supposed to get. So if you use the formula provided, you come to find that it calculates out to use less product per tire than what the bottle tells you to use. So that's very confusing as well. So if you use it long enough, you'll be able to know how much each tire will need from experience. Just make sure there's enough on the inside of the tire to coat the entire inside as well as leaving a bit left over to circulate in the tire so it can be ready for a large puncture if that ever happens. All in all, it's a good product that does what it claims. It lasts for as long as the tire does and it doesn't freeze up in the cold either! 5 stars!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
K
Verified Purchase
KW
Battle Creek, US
★★★★★ 5
Worked on slow leak… one month already!!!
Style: 18oz
Edit: Still holding proper pressure at 2-months !!! Had a slow leak where my tire went from 44psi to ~18psi over 2-3 days… Dashboard light would let me know every few days that I had a tire problem and I would inflate the tire back up to 44psi… Anyway, I used this product and filled air back to 44 psi and it’s held the pressure for a month already !!!! Be sure to deflate tire to ~15 PSI before adding the product… it only took about 30 seconds to empty the container into my tire with the tire pressure low. Very happy with this product !!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026

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