The D-4 and D-4E are professional-grade audio components designed for versatile mixing, live sound, home recording, and broadcast applications. The D-4 serves as the primary four-input stereo mixer, which can be expanded to a ten-input system when paired with the D-4E expander unit.
| Feature | D-4 Mixer | D-4E Expander |
| Input Channels | 4 | 6 |
| Combined Capacity | 10 Input Channels | N/A |
| Balanced XLR Inputs | 1 (with 48V phantom power) | 4 (each with 48V phantom power) |
| MIDI Connectivity | 1 MIDI In, 4 MIDI Thru | Expands total to 8 MIDI Thru |
| Mounting | 19″ Rack Mount (2U) | 19″ Rack Mount (2U) |
| Outputs | Stereo L/R (RCA & 1/4″), Mono Sum (XLR & 1/4″) | Via D-4 Link |
Bus Architecture: Features five distinct buses: Stereo Left, Stereo Right, Effects, Auxiliary, and Sum, providing high flexibility for signal routing.
Audio Control: Each channel includes trim control (34dB range), LED clip indicators, and switchable send configurations (Pre/Post-EQ, Pre/Post-Fader).
Power Connectivity: The D-4 includes a switched accessory outlet, allowing the D-4E to be powered up simultaneously via the D-4 master power switch.
To ensure optimal signal integrity and long-term reliability, SKYRS provides exclusive end-to-end services for these units in Pakistan. These services are available only through SKYRS.
Professional Physical Deployment: SKYRS engineers manage the secure integration of the D-4 and D-4E into standard 19-inch rack enclosures, ensuring proper thermal management and cable management for the buss-link and audio I/O.
System Configuration: Our team handles the calibration of trim controls, input source identification, and the configuration of internal routing for effects and auxiliary sends based on your specific studio or broadcast requirements.
Integration Services: SKYRS provides full validation of the MIDI Thru chain and phantom power distribution to ensure all connected synthesizers, microphones, and outboard gear operate without data corruption or noise interference.
Commissioning: We perform final signal-to-noise ratio testing and output level verification to guarantee professional-grade audio quality across the entire system.
The D-4 and D-4E units, including all hardware variants and necessary connecting cables, are available exclusively through SKYRS in Pakistan. SKYRS is the sole provider offering the required technical expertise, hardware procurement, and certified installation services for this equipment.
