MC4

Multi-Format Audio Conversion
Converts digital audio seamlessly between ADAT™, AES3, and S/PDIF, allowing professional and consumer equipment to work together.

Sampling Rate Conversion
Converts audio between different sampling rates up to 192 kHz while maintaining stable, high-quality digital audio.

Bidirectional Signal Conversion
Transfers audio in both directions between supported formats, reducing the need for multiple dedicated converters.

X-SRC Technology
Performs simultaneous bidirectional format and sampling rate conversion between two independent digital audio systems running at different clock rates.

16-Channel SRC Engine
Processes multiple audio channels simultaneously, enabling real-time multichannel format and sampling rate conversion.

SMUX2 and SMUX4 Support
Supports high-sample-rate ADAT™ transmission, allowing reliable operation with modern high-resolution audio workflows.

Advanced Clock Recovery
Uses audiophile-grade PLL technology to regenerate cleaner digital audio signals and reduce jitter.

Flexible Synchronization
Synchronizes to Word Clock, AES11, digital audio inputs, or its own internal reference, making integration simple in virtually any setup.

Dedicated AES11 Reference Input
Provides a separate AES11 synchronization input for professional broadcast and studio environments.

Standalone Operation
Operates without requiring an external master clock in all sampling rate conversion modes.

Internal Precision Reference Clock
Includes a highly accurate internal clock that provides stable synchronization when no external reference is available.

Word Clock Master Output
Can serve as the master clock source for synchronizing other digital audio equipment in the system.

Continuous Signal Operation
Maintains stable output even if the incoming reference clock or audio reference signal is temporarily lost.

Simultaneous Multi-Format Outputs
Converts incoming audio to multiple output formats at the same time, simplifying complex signal distribution.

Signal Regeneration
Re-clocks incoming digital audio to improve signal integrity and ensure reliable transmission between devices.

Simple Front Panel Control
Provides an intuitive menu system for selecting conversion modes, input formats, and synchronization sources.

Automatic Settings Memory
Stores user settings in non-volatile memory so configurations are restored automatically after power cycling.

Compact Rack Design
Half-width enclosure allows two units to be mounted side by side in a single rack space, maximizing rack efficiency.

Universal Power Supply
Built-in international power supply automatically supports worldwide operating voltages for dependable installation.

General Specifications
Device Type: Multichannel Digital Audio Format and Sampling Rate Converter
Audio Formats: ADAT™, AES3 (AES/EBU), S/PDIF
Audio Channels: 8 channels per interface
Supported Sampling Rates: 32.0–192.0 kHz
Supported ADAT Modes: ADAT, SMUX2, SMUX4
Conversion Modes: Unidirectional, Bidirectional, X-SRC
Sampling Rate Conversion: Integrated 16-channel SRC engine
Operation: Standalone or externally synchronized
Internal Reference Clock: AES11 Grade 1, TCXO
Clock Accuracy: < ±1.0 ppm
Clock Jitter: < 10 ps RMS
User Settings Storage: Flash memory
Power Supply: Internal auto-ranging switching power supply
Rack Format: 1/2 19", 1U

Audio Format Conversion
ADAT/SMUX → AES3, S/PDIF, ADAT/SMUX
AES3 → ADAT/SMUX, S/PDIF, AES3
S/PDIF → ADAT/SMUX, AES3
ADAT/SMUX ↔ AES3
Simultaneous Multi-Format Output: Yes
Bidirectional Conversion: Yes
Independent Bidirectional Sample Rate Conversion: Yes (X-SRC)

Sampling Rate Converter
SRC Channels: 16
Lock Range: 4.0–212.0 kHz
Resolution: 24-bit
Dynamic Range: 144 dB (A-weighted)
THD+N: -140 dB
Sampling Ratio: 1:16 upsampling, 16:1 downsampling

Synchronization
Reference Clock Sources: Word Clock, AES11, AES3, ADAT, SMUX2, SMUX4, Internal Clock
AES11 Reference Input: Yes
Word Clock Output: Yes
Standalone Operation Without External Clock: Yes
Continuous Clock Output During Reference Loss: Yes
PLL Technology: Dual low-jitter PLL synthesizers
Clock Recovery: Yes

ADAT Optical Interface
Inputs: 2 × Toslink (EIAJ RC-5720)
Outputs: 2 × Toslink (EIAJ RC-5720)
Supported Formats: ADAT, SMUX2, SMUX4
Bit Depth: 16–24-bit
Sampling Rate Range: 25.0–200.0 kHz

AES3 Interface
Audio Input: 1 × 25-pin D-Sub, transformer balanced
Audio Output: 1 × 25-pin D-Sub, transformer balanced
Reference Input: 1 × XLR female, transformer balanced
Input Impedance: 110 Ω
Signal Level: 200 mV–7 V
Supported Formats: AES3, AES11, IEC60958
Bit Depth: 16–24-bit
Sampling Rate Range: 25.0–200.0 kHz

S/PDIF Interface
Connectors: 4 × RCA (Cinch)
Direction: Switchable input or output depending on operating mode
Signal Level: 0.5 Vpp @ 75 Ω
Output Impedance: 75 Ω
Supported Format: IEC60958
Bit Depth: 16–24-bit
Sampling Rate Range: 25.0–200.0 kHz

Word Clock Interface
Input: 1 × BNC
Output: 1 × BNC
Input Impedance: 75 Ω
Input Signal Level: 200 mV–7 V
Output Level: 3.5 V @ 22 Ω
Supported Clock Rates: 25.0–200.0 kHz
Supported Super Clock Rates: 11.2896 MHz, 12.288 MHz

Internal Clock
Oscillator Type: Temperature compensated crystal oscillator (TCXO)
Clock Accuracy: < ±1.0 ppm
Clock Stability: < ±1.0 ppm (-10 °C to +60 °C)
Operating Temperature: -10 °C to +60 °C

Power
Input Voltage: 85–264 VAC
Input Frequency: 47–440 Hz
Power Consumption: 10 W max

Physical Specifications
Enclosure Dimensions: 196 × 42 × 156 mm
Front Panel Dimensions: 198 × 44 × 2 mm
Weight: Approx. 850 g