


Down4Sound D4S-XP28 DSP 2-IN/8-OUT Signal Processor
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
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- Professional-grade DSP with 2 inputs and 8 outputs for precise system tuning
- 31-band graphic EQ per channel with adjustable crossovers, time alignment, and phase control
- Password protection to prevent unauthorized changes
- Built-in screen plus PC software control via USB
- Ideal for active front stages, multi-amp installs, and subwoofer integration
This Listing Includes: (1) Down4Sound D4S-XP28 DSP 2-IN/8-OUT Signal Processor
The Down4Sound D4S-XP28 is a 2-in/8-out digital signal processor built for dialing in a car audio system with precision. With a 31-band EQ per channel, adjustable crossovers, time alignment, and phase control, it gives you full command over every output. Tune from the built-in screen or the PC software, and lock your settings with password protection.
Best For
- Multi-amplifier installs requiring precise DSP tuning
- Active front stage systems
- Subwoofer and full-range system alignment
- Professional car audio installations
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.


