DS18 Single Din Headunit Full DSP Bluetooth USB 3 Zones RGB illumination - SDX-P100

The DS18 SDX-P100 Single DIN Head Unit is a feature-packed digital media receiver that transforms any standard single DIN dash opening into a full-blown car audio command center. Combining an onboard full DSP processor, Bluetooth audio and calling, USB media playback, three-zone RGB illumination, and 3.5V RCA outputs, the SDX-P100 is built for enthusiasts who want serious tuning capability without sacrificing a clean, factory-style install. Whether you're building a competition-level system or simply upgrading an older vehicle that still has a single DIN slot, the DS18 SDX-P100 delivers the processing power typically reserved for standalone audio processors — all from a sleek head unit form factor.

Key Features & Benefits

• Full Onboard DSP (Digital Signal Processor): The SDX-P100 includes a built-in DSP with a 24-band EQ and time alignment, giving you precise control over frequency response and soundstage imaging — capabilities that audiophiles typically add as a separate component. Crossover slopes of up to 24 dB are also supported, along with 2-way or 3-way operating modes, so you can tune your system with surgical precision directly from the head unit.
• Bluetooth Audio & Hands-Free Calling: Stream music wirelessly from your smartphone and take hands-free calls without fumbling for cables. Bluetooth connectivity keeps your dash clean while staying connected on the road.
• USB Media Playback: Plug in a USB drive to access your digital music library directly, making it easy to enjoy high-quality audio files without relying solely on streaming.
• 3-Zone RGB Illumination: Customize the head unit's visual appearance with three-zone RGB lighting. Match your interior accent colors or create a unique look to suit your build — a particularly popular feature in show cars and custom installs.
• 3.5V RCA Outputs: High-voltage RCA outputs provide a clean, strong signal feed to external amplifiers, reducing noise and giving your amp stage less work to do. This output level is notably higher than many budget head units, which translates to better signal-to-noise ratio in the final audio chain.
• App-Based Control: The SDX-P100 supports app connectivity, allowing you to fine-tune DSP settings, EQ curves, and other parameters from your smartphone — putting advanced tuning in the palm of your hand.
• Single DIN Form Factor: Fits the most universal dash opening size available in vehicles, making this unit compatible with a wide range of cars, trucks, SUVs, and custom builds where a double DIN slot is unavailable or undesirable.
• DS18 SDX Series Pedigree: DS18 positions the SDX Series as purpose-built for high-powered single DIN head unit builds. The SDX-P100 is designed to serve as the nerve center of a serious audio system, not just a basic source unit.

Specifications

• Brand: DS18
• Model / MPN: SDX-P100
• SKU: DSESDX-P100
• UPC: 810097264489
• Form Factor: Single DIN
• DSP: Full onboard DSP with 24-band parametric EQ
• Crossover: Up to 24 dB crossover slopes; 2-way and 3-way modes supported
• Time Alignment: Yes, included in DSP suite
• Connectivity: Bluetooth (audio streaming & hands-free calling), USB
• RCA Output Voltage: 3.5V
• Illumination: 3-Zone RGB
• App Control: Yes
• Package Dimensions: 7.50" W × 3.50" H × 8.50" D (outer box)

Fitment

The DS18 SDX-P100 is designed to fit any vehicle with a standard single DIN (1-DIN) dash opening. This is one of the most universally adopted head unit sizes and is found across a massive range of cars, trucks, SUVs, motorcycles with head unit bays, and marine or powersport applications that accept a single DIN chassis. DS18's SDX Series is specifically noted as applicable to car audio, Jeep, motorcycle, marine, and powersport builds, making the SDX-P100 a versatile choice across platforms.

Because fitment depends on your specific vehicle's dash configuration rather than a make/model application list, we strongly recommend using the fitment verification tool on this page or contacting our team directly before ordering to confirm your dash accepts a single DIN chassis. Vehicles with integrated double DIN or proprietary infotainment systems may require an additional dash kit adapter.

Frequently Asked Questions

Does the DS18 SDX-P100 include an onboard DSP, or do I need a separate processor?

Yes — the SDX-P100 has a full DSP built directly into the head unit. This includes a 24-band EQ, time alignment, and crossover control with up to 24 dB slopes and support for 2-way or 3-way speaker configurations. No separate outboard processor is required to tune your system at a high level.

What RCA output voltage does the SDX-P100 provide?

The SDX-P100 outputs 3.5V via its RCA outputs. This higher-than-average preamp output voltage helps deliver a cleaner signal to external amplifiers, which can reduce background noise and improve overall audio quality in your system.

Can I control the DSP settings from my phone?

Yes. The SDX-P100 supports app-based control, allowing you to adjust DSP settings, EQ, and other tuning parameters directly from a smartphone app. This makes real-time tuning much more convenient compared to navigating settings from the head unit's front panel alone.

Is this item in stock and ready to ship?

Yes — as of the time of this listing, the DS18 SDX-P100 is a regularly stocked product at ThreePiece.us. It is not a special-order item, and free shipping is included on your order within the continental US. Financing is also available through Affirm, so you can break your purchase into manageable payments.

Why Buy from ThreePiece.us

ThreePiece.us has been serving automotive enthusiasts since 2014 with a focus on expert product knowledge and customer support. When you order the DS18 SDX-P100 single DIN DSP head unit from us, you get:

• Free Shipping on every order — no minimums, no surprises.
• Affirm Financing — break your purchase into manageable payments with flexible financing options available at checkout.
• Expert Support — our team has helped over 10,000 customers. Have a question about whether the SDX-P100 fits your build or how to integrate it with your amplifier setup? Reach out before you buy. Call us at 813-535-5801 or email [email protected].
• In-Stock Availability — the SDX-P100 ships from existing inventory, so you're not waiting on a special-order lead time.