Audio Interfaces

The Apogee Electronics Symphony I/O MK 2 PTHD Plus card integrates up to 32 channels of high-definition audio inputs and outputs into a Pro Tools HD environment, delivering exceptional sound quality at up to 24-bit/192 kHz resolution. With Pro Tools HDX and HD Native connectivity, it offers ultimate flexibility and compatibility for audio professionals working in the studio or in post-production.

ARTICLE N° 98209
  • Apogee Electronics Symphony I/O MK 2 PTHD Plus
  • Modular audio interface with integrated Pro Tools HD card
  • Maximum audio resolution: 24-bit / 192 kHz
  • Ultra-low latency
  • Symphony Control software for easy access to all input/output parameters
  • Front panel with touchscreen and a control encoder
  • Analog to Digital (A/D) Conversion:
  • THD + N: -115 dB @22dBu (0.00020%) unweighted
  • Dynamic range: 122 dB (A-weighted)
  • Maximum input level: (+4dBu reference): +24dBu
  • Maximum input level: (-10dBV reference): +6dBv
  • Frequency response at 44.1 kHz sample rate: 10 Hz - 20 kHz
  • Impedance Input: 10 kOhms
  • Digital to Analog Conversion (D/A):
  • THD + N: -119 dB @21dBu (0.00014%) unweighted
  • Dynamic range: 126 dB (A-weighted)
  • Maximum output level: ∞ to +24dBu
  • Frequency response at 44.1 kHz sampling rate: DC to 20 kHz
  • Output impedance: 25 Ohms
  • Balanced outputs using Apogee's proprietary Perfect Symmetry Circuitry (PSC) technology
  • Stereo headphone output:
  • THD + N:
  • 110 dB @19dBu with 600 Ohms (=80 mW)
  • 101 dB @14dBu with 32 Ohms (=470 mW)
  • Dynamic range: 121 dB (A-weighting)
  • Pre-configured with PTHD card:
  • Mini PC32 port (MiniDigilink) x1 for connection to Pro Tools HD systems
  • BNC ports x2 for synchronization with other interfaces
  • USB-B port x1 for software updates
  • Designed in California and manufactured in the United States
  • 19" Rack format (2U)
  • Dimensions: 45 x 29 x 29 mm
The Apogee Electronics Symphony I/O MK 2 PTHD Plus is a high-end modular audio interface designed to meet the demands of audio professionals.
It offers very high-quality A/D and D/A conversion with audio resolution up to 24-bit/192 kHz, ensuring exceptional sonic accuracy.

Thanks to its integrated Pro Tools HD card, it allows for seamless integration with Pro Tools HD systems, offering up to 32 channels of bi-directional inputs and outputs at different sample rates, while maintaining ultra-low latency. This makes it ideal for recording studios, post-production and audio broadcast environments.

The Apogee Symphony I/O MK 2 PTHD Plus's front panel features an intuitive touchscreen and control encoder for easy access to all input and output parameters, while Symphony Control software provides full remote control.

Designed for use with Pro Tools HDX and HD Native systems, this interface can also be synchronized with other devices via its BNC ports.

The Apogee Electronics Symphony I/O MK 2 PTHD Plus also features a rugged design and compact 19" rack-mountable dimensions, allowing it to easily integrate into any studio setup. The addition of Perfect Symmetry Circuitry (PSC) technology ensures balanced outputs and perfect sound reproduction, regardless of the equipment used.
Maximum resolution
 24 bit
Max sampling frequency
 192
Compatibility
 MacOS, Windows
Digital input
 Mini DigiLink
Headphone output
 1
Digital output
 Mini DigiLink
Word clock
 1x In / 1x Out
Power supply
 Power adapter (included)
19" rack
 2U

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