Clarion DTX680S 6-Channel 600W Amplifier with 8-Channel DSP

Professional DSP amplification meets flexible integration in one compact unit

Product Overview

The Clarion DTX680S is an 8-channel digital signal processor and 6-channel amplifier engineered for serious custom installations. Combining Class A/B and Class D amplification with comprehensive DSP tuning capabilities, this unit delivers 600W maximum power while offering the precision control needed for complex multi-speaker systems. With six input channels (four high-level plus two RCA) and generous output options (eight RCA plus six high-level), the DTX680S adapts to virtually any system architecture—from factory integration to full aftermarket builds. The built-in 31-band equalizer with 0.1dB resolution, independent crossover filters per channel, and time alignment up to 10,000ms ensure every installation achieves reference-quality sound staging and frequency response.

Key Specifications

• 8-channel DSP processor with 6-channel amplification (Class A/B + D hybrid)
• Maximum power output: 600W (CH1-4: 50W peak each, CH5-6: 100W peak each)
• 6 input channels: 4 high-level (28Vpp max) + 2 RCA (6.5Vpp max)
• 14 total outputs: 8 RCA (6.5Vpp max) + 6 high-level (28-40Vpp max)
• 31-band parametric EQ: 20Hz-20kHz, Q value 0.404-28.852, ±12dB gain, 0.1dB resolution
• Independent high-pass/low-pass filters per channel: 20Hz-20kHz, 6-48dB/octave slopes
• Output delay: 0-10,000ms (346cm/136in) for precise time alignment
• Filter types: Linkwitz-Riley, Butterworth, Bessel
• Signal-to-noise ratio >100dB, THD 0.05%, dynamic range >100dB
• Operating voltage: DC 9-16V
• Dimensions: 194mm (L) × 151mm (W) × 45mm (H)
• Weight: 1.35kg (packaged: 1.60kg)

Features & Benefits

Hybrid amplification architecture uses Class A/B for front channels and Class D for rear/subwoofer channels, delivering clean, efficient power with minimal heat generation—ideal for under-seat or boot installations where ventilation is limited.

Professional-grade 31-band parametric EQ with 0.1dB resolution lets you correct factory speaker response curves, eliminate cabin resonances, and dial in competition-level frequency accuracy that rivals dedicated DSP units costing significantly more.

Flexible connectivity options accept both high-level factory signals and aftermarket RCA inputs simultaneously, making this perfect for upgrading factory systems without replacing head units or for building complex multi-amplifier setups with clean signal routing.

Independent crossover control per channel with selectable filter types (Linkwitz-Riley, Butterworth, Bessel) and slopes from 6dB to 48dB/octave gives you surgical precision when matching speakers, protecting tweeters, and achieving seamless driver integration.

Time alignment up to 10,000ms compensates for off-axis speaker placement common in vehicles, creating a centered soundstage from an asymmetric driver's position—particularly valuable in utes, vans, and touring 4WDs where speaker mounting locations are compromised.

Six preset memory banks store complete tuning profiles, allowing quick switching between daily commute settings, show mode, or passenger-focused staging—perfect for installers offering multiple tune options or owners who want different profiles for highway versus city driving.

Compact footprint (194 × 151 × 45mm) and lightweight design (1.35kg) simplify installation in space-constrained vehicles, fitting under seats, behind panels, or in small boot cavities without sacrificing channel count or processing power.

Remote sensing capability automatically powers the unit on when detecting high-level input signals, eliminating the need for dedicated remote wire connections in factory integration scenarios—streamlines installation and reduces wiring complexity.

Technical Specs

• Amplifier type: Class A/B (CH1-4) + Class D (CH5-6) hybrid
• Input channels: 6 total (4 high-level @ 4.7Ω impedance + 2 RCA @ 10kΩ impedance)
• Output channels: 14 total (8 RCA @ 51Ω impedance + 6 high-level)
• Peak power output: CH1-4 @ 50W each, CH5-6 @ 100W each (600W total maximum)
• Output signal gain range: -59.9dB to 0.0dB
• Equalizer: 31-band parametric, 20Hz-20kHz (1Hz resolution), Q 0.404-28.852, ±12dB gain (0.1dB steps)
• Crossover filters: Linkwitz-Riley, Butterworth, Bessel types, 20Hz-20kHz (1Hz resolution), OFF/6/12/18/24/30/36/42/48dB per octave slopes
• Output phase: 0° or 180° selectable per channel
• Output delay: 0-10,000ms (0-346cm/0-136in)
• Signal input range: RCA 6.5Vpp max, high-level 28Vpp max
• Signal output range: RCA 6.5Vpp max, high-level 28Vpp (CH1-4)/40Vpp (CH5-6) max
• Frequency response: 20Hz-20kHz
• Total harmonic distortion: 0.05%
• Signal-to-noise ratio: >100dB (RCA)
• Dynamic range: >100dB
• Remote input: high-level sense or ACC start
• Remote output: +12V DC @ 200mA
• Standby power consumption: 0.1W
• Operating temperature: -20°C to +70°C
• Working voltage: DC 9-16V
• Dimensions: 194mm × 151mm × 45mm (L × W × H)
• Weight: 1.35kg (unit), 1.60kg (packaged)

Frequently Asked Questions

Can this power a full system including subwoofer?

Yes, the DTX680S can power front components, rear fill, and a subwoofer channel. Channels 5-6 deliver 100W peak each, suitable for a compact 8-10" subwoofer or can be bridged for higher power applications.

Does this work with factory head units?

Absolutely. The four high-level inputs accept speaker-level signals directly from factory amplified or non-amplified systems, with remote sensing that auto-powers the unit when audio is detected—no aftermarket head unit required.

What tuning software is required?

The DTX680S is tuned via Clarion's Windows-based software (available for download). Connection requires a USB-to-serial adapter (not included). Once programmed, settings are stored in the unit's memory.

Can I run this under a seat?

Yes, the compact dimensions (194 × 151 × 45mm) and efficient Class D amplification make under-seat installation viable in most vehicles. Ensure adequate airflow and avoid blocking ventilation slots for optimal thermal performance.

Is professional installation recommended?

While experienced DIY installers can handle wiring, achieving optimal DSP tuning requires measurement equipment (RTA microphone, analyzer software) and acoustic tuning knowledge. Professional installation and tuning is recommended for best results.

Compatible With / Goes Well With

• Aftermarket component speaker systems (4" to 6.5" sizes)
• Compact subwoofers (8" to 10" recommended for available power)
• Factory audio system integration (upgrade path without head unit replacement)
• Multi-amplifier custom installations (use as DSP front-end with additional power amps)
• RCA distribution blocks and signal splitters for expanded system routing
• RTA measurement microphones and tuning software for professional setup
• 4-gauge or 8-gauge amplifier wiring kits (depending on total system draw)

Weight

1.60kg (packaged with accessories)