Multi-channel Thunderbolt 2 Audio Interface for Mac
 
Symphony I/O Mk II Thunderbolt is the most powerful multi-channel audio interface for Thunderbolt-based Mac workstations.  Designed for the home or professional studio running Logic Pro X or any other native based DAW, this system offers your choice of 4 different base I/O configurations with the option to expand up to 32×32 simultaneous channels per unit while still maintaining incredibly low latency.
 
True Thunderbolt Performance
Symphony I/O Mk II Thunderbolt delivers the full potential of Thunderbolt 2 performance with the lowest latency, unmatched CPU efficiency and 2 ports for connecting additional peripherals.
Low Latency
Symphony I/O Mk II Thunderbolt relies on Apogee’s proprietary Thunderbolt driver, written from the ground up to offer unmatched performance and efficiency. When using Logic Pro X, latency has been reduced to an astounding 1.35 ms round-trip*, allowing you to monitor through your DAW, plug-ins included, simplifying your workflow and leveraging the power of your Mac. Even when your session’s DSP demands require a higher buffer setting, Symphony I/O’s ultra-low latency means no longer having to choose between power and speed.
To accommodate different workflow preferences, Symphony I/O Mk II Thunderbolt features optional direct hardware monitoring through Symphony Control Software with 0.6ms of latency.
* Logic Pro X at 96kHz / 32 buffer setting
 
2×6 
INPUTS
Analog IN: 2 balanced inputs on 2 female XLR connectors
AES IN: Stereo input on 1 female XLR connector
Optical IN: Supports ADAT, SMUX & S/PDIF
ADAT: 8 channels 44.1-48 kHz on 1 Toslink connector
SMUX: 4 channels 88.2-96 kHz on 1 Toslink connector
S/PDIF: 2 channels, up to 96 kHz on 1 Toslink connector
S/PDIF Coax IN: 2 channels, up to 192 kHz on 1 RCA connector
OUTPUTS
Analog OUT: 6 balanced outputs on 1 DSUB 25-pin connector
AES OUT: Stereo output on 1 male XLR connector
Optical OUT: Supports ADAT, SMUX & S/PDIF
ADAT: 8 channels 44.1-48 kHz on 1 Toslink connector
SMUX: 4 channels 88.2-96 kHz on 1 Toslink connector
S/PDIF: 2 channels, up to 96 kHz on 1 Toslink connector
S/PDIF Coax OUT: 2 channels, up to 192 kHz on 1 RCA connector
8×8 
INPUTS
Analog IN: 8 balanced inputs on 1 DSUB 25-pin connector
*AES-EBU IN: 8 inputs on 1 DSUB 25-pin connector
(192k single wide compatible)
*Optical IN: Supports ADAT, SMUX & S/PDIF
ADAT: 8 channels 44.1-48 kHz
SMUX: 8 channels 88.2-96 kHz
S/PDIF: 2 channels, up to 96 kHz
Coax IN: 2 channels of S/PDIF, up to 192 kHz
OUTPUTS
Analog OUT: 8 balanced outputs on 1 DSUB 25-pin connector
*AES-EBU OUT: 8 outputs on 1 DSUB 25-pin connector
(192k single wide compatible)
*Optical OUT: Supports ADAT, SMUX & S/PDIF
ADAT: 8 channels 44.1-48 kHz
SMUX: 8 channels 88.2-96 kHz
S/PDIF: 2 channels, up to 96 kHz
Coax OUT: 2 channels of S/PDIF, up to 192 kHz
16×16 
 
INPUTS
Analog IN: 16 balanced inputs on 2 DSUB 25-pin connectors
Coax IN: S/PDIF on 1 RCA connector
OUTPUTS
Analog OUT: 16 balanced outputs on 2 DSUB 25-pin connectors
Coax OUT: Supports SPDIF on 1 RCA connector
8×8 with 8 mic preamps - $4690.00
INPUTS
Analog Inputs
8 built-in mic preamps
Digitally controlled, 85dB microphone preamps
4 Hi-Z 1/4” instrument inputs capable of handling high level instruments
Selectable 48v phantom power, Soft Limit and phase invert
8 balanced inputs on 1 DSUB 25-pin connector
Inserts
8 balanced software assignable analog insert points
Return 1-8 on 1 DSUB 25-pin connector
Digital Inputs
*AES-EBU IN: 8 inputs on 1 DSUB 25-pin connector
*Optical IN: Supports ADAT, SMUX & S/PDIF
ADAT: 8 channels 44.1-48 kHz on 1 Toslink connector
SMUX: 8 channels 88.2-96 kHz on 2 Toslink connectors
S/PDIF: 2 channels, up to 96 kHz on 1 Toslink connector
Coax IN: 2 channels of S/PDIF, up to 192 kHz on 1 RCA connector
OUTPUTS
Analog Outputs
8 balanced outputs on 1 DSUB 25-pin connector
Inserts
8 balanced software assignable analog insert points
Send 1-8 on 1 DSUB 25-pin connector
Digital Outputs
*AES-EBU OUT: 8 outputs on 1 DSUB 25-pin connector
*Optical OUT: Supports ADAT, SMUX & S/PDIF
ADAT: 8 channels 44.1-48 kHz on 1 Toslink connector
SMUX: 8 channels 88.2-96 kHz on 2 Toslink connectors
S/PDIF: 2 channels, up to 96 kHz on 1 Toslink connector
Coax OUT: 2 channels of S/PDIF, up to 192 kHz on 1 RCA connector
*Dig I/O hardware switch selects AES or Optical digital I/O format