SKU: 83514018920

Apogee SYM2-16X16SE-2X6SE Thunderbolt Interface with 16x16 SE and 2x6 SE Modules

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Description

Apogee SYM2-16X16SE-2X6SE Thunderbolt Interface with 16x16 SE and 2x6 SE ModulesThe ultimate music production centerpiece for any modern commercial, project, or personal studio, the Apogee Electronics Symphony Mk II Thundebolt Interface with 16x16 SE and 2x6 SE Modules is designed to deliver high performance A D and D A conversion at up to 192 kHz, for mixing and mastering engineers using a thunderbolt system. The included 16x16 SE and 2x6 SE I O modules offer stunning dynamic range with low distortion and noise for mastering

The ultimate music-production centerpiece for any modern commercial, project, or personal studio, the Apogee Electronics Symphony Mk II Thundebolt Interface with 16x16 SE and 2x6 SE Modules is designed to deliver high-performance A/D and D/A conversion at up to 192 kHz, for mixing and mastering engineers using a thunderbolt system. The included 16x16 SE and 2x6 SE I/O modules offer stunning dynamic range with low distortion and noise for mastering-grade sonic quality. The system is Dolby-Atmos ready.

This configuration gives you a total of 18 analog inputs on two XLR connectors and two DB-25 connectors, plus 22 analog outputs on three DB-25 connectors. Additional XLR connectors allow for two channels of AES I/O. You also get up to eight channels of ADAT I/O via optical connectors and two channels of S/PDIF I/O via RCA connectors. The chassis utilizes USB-C (Thunderbolt) connectivity for high-speed data transfer rates and compatibility with your computer. Its front panel presents a TFT touchscreen display, multifunction control knob, and convenient 1/4" stereo headphone output.

Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)

The Symphony I/O Mk II from Apogee Electronics is an advanced, flexible multi-channel audio interface featuring the newest flagship AD/DA conversion, modular I/O (up to 32 inputs and outputs), and an intuitive touchscreen display. The chassis provides two I/O Module slots for a variety of digital audio conversion options that form the interface side of the Symphony I/O Mk II. The front-panel touch screen offers convenient access to nearly every setting including sample rate, clock source, headphone & speaker output levels, meters for all I/O and section navigation, as well as input levels, digital I/O, and configuration settings.

The rear panel provides access to the two I/O Module slots that are capable of a combined thirty-two channels of input and output, while the two Thunderbolt connectors ensure compatibility with newer Mac computers. Also included are Wordclock I/O connectors & termination, an option card slot, and a quiet digitally-controlled fan to keep everything running cool.

The Symphony I/O Mk II features a single ultra-high-fidelity DAC and headphone amplifier  with Apogee's Constant Current Drive technology, which was first introduced in the Apogee Groove. The headphone amplifier dynamically compensates for non-linearities of any connected headphones, providing massive power while maintaining extremely low distortion and linear frequency response.

The optional five I/O Modules allow the user to choose from standard configurations, or customize the following – channel count, analog to digital input, digital to analog output, microphone preamps (requires an analog card), and digital I/O.

Apogee Electronics 16x16 SE Module Analog Input/Output Module for Symphony I/O Mk II

Audio professionals looking for the very best converters will appreciate the updated Apogee Electronics 16x16 SE Module, a sixteen-channel analog input and sixteen-channel analog output module for the Symphony I/O Mk II. The module occupies one of the two slots available on the chassis. Additionally, two-channel coaxial S/PDIF input and output is also provided. The A/D circuit has been refined to offer a streamlined circuit design, resulting in the most transparent signal path to the A/D stage possible.

The D/A section has been optimized with a more powerful and robust output driver that is capable of driving virtually any input without a decrease in performance, regardless of the load presented by the connected gear. The analog inputs and outputs are offered on DB-25 connectors and require optional breakout cables, available in various configurations to suit individual requirements.

Apogee Electronics 2x6 SE Special Edition Mastering I/O Card for Symphony I/O Mk II

The Apogee Electronics 2x6 SE is a special-edition mastering I/O card designed to deliver high-performance A/D and D/A conversion at up to 192 kHz for mixing and mastering engineers in personal, project, and commercial studios. It features low THD+N (-116 dB for analog inputs, -118 dB for analog outputs) and high dynamic range (124 dBA for analog inputs and 131 dBA for analog outputs) for uncompromising accuracy and detail.

Its analog I/O includes two inputs on XLR 3-pin jacks and six outputs on a DB25 connector. Additional XLR, TOSLINK optical, and RCA coaxial jacks provide connectivity for AES/EBU, ADAT, and S/PDIF digital inputs and outputs. The 2x6 SE is easily installed in a Symphony I/O Mk II Thunderbolt or Pro Tools HD chassis.

Features

  • Symphony Mk II Chassis
  • 16x16 SE Module
  • 2x6 SE Module
  • Thunderbolt Connectivity
  • 18 Analog In / 22 Analog Out
  • 2 S/PDIF I/O, AES I/O
  • 8 ADAT I/O
  • Up to 192 kHz Sample Rate
  • Dolby Atmos Ready
  • Color Touchscreen Display

Specifications

Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt) Specs

Analog to Digital
ADC
THD+N: -114 dB @ 22 dBu (0.00020%)
Dynamic Range: 122 dB (A weighted)
Maximum Input Levels:
+4 dB Setting: +24 dBu
-10dB Setting: +6 dBV
Frequency Response at 44.1 kHz: 1 Hz to 20 kHz (±0.05 dB)
Input impedance: 10 kOhms
Digital to Analog
DAC
THD+N: -117 dB @ 21 dBu (0.00014%)
Dynamic Range: 129 dB (A weighted)
Max Output Levels: -∞ to +24 dBu
Frequency Response at 44.1 kHz: DC to 20 kHz (±0.05 dB)
Output Impedance: 25 Ohms
Outputs are balanced through Apogee's proprietary Perfect Symmetry Circuitry (PSC)
Headphone Output
Headphone
Stereo Headphone Output (Front Panel): 1/4" / 6.35 mm
THD+N:
-110 dB @ 19 dBu into 600 Ohm (=80 mW)
-101 dB @ 14 dBu into 32 Ohm (=470 mW)
Dynamic Range: 121 dB (A weighted)
Output: Apogee's proprietary Constant Current Drive provides smooth frequency response with any headphones
System Requirements
System Requirements
Computer: Thunderbolt-equipped Mac
Memory: 4 GB RAM minimum, 8 GB RAM recommended
OS X 10.9.5 or greater
Thunderbolt cable (sold separately)
General Specifications
Power
90 to 240 VAC, 50/60 Hz, 150 W
Dimensions
Without Rack Ears: 17.8 x 11.5 x 3.5" / 450.9 x 292.1 x 88.9 mm
With Rack Ears: 19.0 x 11.5 x 3.5" / 482.6 x 292.1 x 88.9 mm
Weight
Not specified by manufacturer
Packaging Info
Package Weight
18.4 lb
Box Dimensions (LxWxH)
22.8 x 17.9 x 9.9"

Apogee Electronics 16x16 SE Module Analog Input/Output Module For Symphony I/O Mk II Specs

Key Specs
Form Factor
Internal Card
Converter Type
AD/DA Converter
Number of Channels
16x A/D (at 192 kHz)
16x D/A (at 192 kHz)
Maximum Sampling Rate
192 kHz / 24-Bit
Number of Microphone Inputs
No
Analog Audio I/O
2x DB-25 25-Pin Balanced Line Input
2x DB-25 25-Pin Balanced Line Output
Digital Audio I/O
2x RCA Coaxial S/PDIF In & Out
Converter Type
AD/DA Converter
Number of Channels
16x A/D (at 192 kHz)
16x D/A (at 192 kHz)
Display
No
Maximum Sampling Rate
192 kHz / 24-Bit
Number of Microphone Inputs
No
Connectivity
Analog Audio I/O
2x DB-25 25-Pin Balanced Line Input
2x DB-25 25-Pin Balanced Line Output
Phantom Power
No
Digital Audio I/O
2x RCA Coaxial S/PDIF In & Out
Host Connection
No
USB (Non-Host)
No
Sync I/O
No
Network I/O
No
MIDI I/O
No
Expansion Slots
No
Performance
Frequency Response
1 Hz to 20 kHz ±0.05 dB (at 44.1 kHz)
Maximum Input Level
+24 dBu
Maximum Output Level
+24 dBu
Impedance
A/D Converters:
10 Kilohm
D/A Converters:
50 Ohm
Dynamic Range
A/D Converters:
124 dBA
D/A Converters:
128 dBA
THD+N
A/D Converters:
-116 dB / 0.00015% (at 23 dBu)
D/A Converters:
-119 dB / 0.00014% (at 21 dBu)
Digital Audio
Sample Rates
44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
Bit Depths
24-Bit
Compatibility
OS Compatibility
No
Mobile App Compatible
No
Power
Power Requirements
PCIe
Packaging Info
Package Weight
2.05 lb
Box Dimensions (LxWxH)
13.2 x 13 x 3.1"

Apogee Electronics 2x6 SE Special Edition Mastering I/O Card For Symphony I/O Mk II Specs

General
Compatible Interfaces
Apogee Symphony MkII
Analog Audio I/O
2x XLR 3-Pin Balanced Line Input
1x XLR 3-Pin Stereo Input
1x DB-25 25-Pin Balanced Line/8-Channel Output (on Breakout Cable)
1x XLR 3-Pin Stereo Output
Digital Audio I/O
1x TOSLINK Optical ADAT / S/PDIF Input (S/MUX Support)
1x RCA Coaxial S/PDIF Input
1x TOSLINK Optical ADAT / S/PDIF Output (S/MUX Support)
1x RCA Coaxial S/PDIF Output
Host Connection
Thunderbolt/Mini DisplayPort
Host Connection Protocol
Thunderbolt 3
USB (Non-Host)
No
Sync I/O
No
Network I/O
No
MIDI I/O
No
Performance
Frequency Response
20 Hz to 20 kHz
Maximum Input Level
+24 dBu
+10 dBu
Impedance
Inputs:
10 Kilohms
Outputs:
50 Ohms
Dynamic Range
A/D Converters:
124 dB
D/A Converters:
131 dB
THD+N
A/D Converters:
-116 dB
D/A Converters:
-118 dB
Digital Audio
Sample Rates
44.1 kHz
Bit Depths
32-Bit
Packaging Info
Package Weight
2.25 lb
Box Dimensions (LxWxH)
13.9 x 12.2 x 3.4"
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: 83514018920

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Annette D
Los Angeles, US
★★★★★ 5
Good treat
My pup loves em. Keeps her busy a few minutes
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Reviewed in the United States on December 7, 2025
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HODGEPODGESPV
Bozeman, US
★★★★★ 4
Paws the vote is in and it got three out of three
Three puppies voted paws up for taste and a little bit of longevity. Now as for value for money. I know how much better than rawhide treats. But I’d like to see the price come down and more chewy’s inside the bag
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Reviewed in the United States on December 9, 2025
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Gloria O.
Lexington, US
★★★★★ 5
Dog loved them
Great little treat
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Reviewed in the United States on August 10, 2025
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Natalia
Lowell, US
★★★★★ 2
So so small! Not worth $
The images in Amazon are nothing like what the product is. The pretzels and rings are minuscule. My two pit/lab mixes will eat one in about 30 seconds. So disappointment. Not worth the $ for what you’re getting. I tried to return items which are individually wrapped but they do not allow returns on these products. I have not opened any of them and still not able to return. If you have a dog under 15lbs these may work! If you have a large breed don’t bother. I’m so disappointed. Pictures above is the product next to a small milk bone biscuit (for reference).
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Reviewed in the United States on January 6, 2025
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Adrien Lamont
Houston, US
★★★★★ 5
A Premium Magnesium Powder From A Brand I Actually Trust
Thorne has a strong reputation in the supplement world, and this Magnesium Citrate powder is a good example of why. Magnesium is one of those basic minerals that does more than people realize. It supports normal muscle and nerve function, helps with energy production, contributes to bone health, and plays a role in cardiovascular function. The NIH notes that magnesium is involved in hundreds of enzyme systems in the body, including processes tied to muscle and nerve function, blood glucose control, blood pressure regulation, and bone development. (Office of Dietary Supplements) Magnesium citrate in particular is a form many people use because it is generally well absorbed and can also help with occasional constipation. That is both a benefit and something to respect. If you take too much, it can move from “helpful” to “where is the nearest bathroom” fairly quickly. I would start modestly and see how your body responds. The citrus berry flavor is pleasant enough for a mineral powder. It is not candy, and it does not need to be. It mixes reasonably well and is easy to work into a nightly routine or use when you feel like your muscles are tight, your diet has been less than ideal, or you simply want magnesium without swallowing another capsule. The biggest selling point for me is the brand. Thorne is not some mystery-label supplement company with a pretty bottle and a warehouse address nobody wants to talk about. Thorne says its facility is NSF certified, it manufactures more than 40 NSF Certified for Sport products, and it is used by professional and national sports organizations. (Thorne) Their Magnesium Citrate product page also states that the product is third-party tested and certified to verify what is in the package. (Thorne) That matters with supplements. You are not just buying magnesium. You are buying confidence that the dosage, purity, and manufacturing standards are being taken seriously. Thorne usually costs more than bargain brands, but with supplements, cheap is not always the victory it looks like on the front end. Overall, this is a high-quality magnesium option from a brand with real credibility. I like it for muscle support, general wellness, bone and heart-health support, and occasional regularity. Just treat it like a supplement, not a snack, especially if you are sensitive to magnesium or already taking other products that contain it.
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Reviewed in the United States on May 1, 2026

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