Accuphase DG-78 Digital Voicing Equalizer

The Accuphase DG-78 Digital Voicing Equalizer is a reference-grade room correction and equalization system designed to unlock the full potential of any high-end audio setup. As the successor to the DG-68, it introduces advanced processing, improved conversion stages, and a refined user interface. As a result, it delivers precise acoustic control while preserving musical integrity.

Advanced digital voicing for precise room correction

The DG-78 analyzes your listening environment and adjusts the frequency response with exceptional accuracy. By correcting room-induced anomalies, it creates a more balanced and natural sound. Therefore, music gains clarity, focus, and realism across the entire frequency range.

Redesigned interface with intuitive control

The DG-78 features a completely updated user interface with a high-quality electrostatic touch panel. This replaces the previous pressure-sensitive design and improves responsiveness. In addition, the warm-toned display enhances visibility. As a result, adjusting EQ curves and settings becomes faster and more intuitive, whether using a stylus or your finger.

Ultra-high-speed DSP for maximum precision

At the core of the DG-78 is a powerful Analog Devices SHARC DSP. It processes signals at up to 384kHz without down-sampling. Because of this, filter accuracy reaches an exceptionally high level. Consequently, the system maintains signal integrity while applying precise corrections.

High-performance A/D and D/A conversion

The DG-78 uses premium AKM A/D converters operating at 352.8kHz/32-bit, arranged in parallel for each channel. This improves dynamic range and reduces noise. In addition, the ESS ES9028PRO DAC operates in parallel configuration with Accuphase’s MDS++ architecture. Therefore, the output achieves outstanding resolution and low distortion.

ANCC for ultra-low noise and distortion

The DAC stage incorporates Accuphase’s ANCC (Accuphase Noise and distortion Canceling Circuit). This technology actively reduces noise and distortion within the signal path. As a result, the sound remains clean, smooth, and highly detailed, even at low listening levels.

Optimized circuitry for peak performance

Accuphase has refined every circuit section in the DG-78 to achieve maximum performance. From input to output, each stage works together to preserve signal purity. Therefore, the system delivers consistent and reliable results in demanding audio environments.

Precision measurement system

The included measurement microphone works with a dedicated A/D converter to capture room characteristics accurately. This ensures reliable data for correction. As a result, the equalization process becomes both precise and repeatable.

Key highlights

• Reference digital voicing equalizer for room correction
• Redesigned electrostatic touch panel interface
• Ultra-high-speed SHARC DSP with up to 384kHz processing
• AKM 32-bit A/D converters in parallel configuration
• ESS ES9028PRO DAC with MDS++ architecture
• ANCC circuit for reduced noise and distortion
• High-precision EQ curve adjustment and control
• Optimized internal circuitry for maximum signal integrity
• Accurate measurement system with dedicated microphone input

Precision control, natural sound

By combining advanced DSP processing, high-end conversion technology, and an intuitive interface, the Accuphase DG-78 offers complete control over your listening environment. Ultimately, it refines the sound of your system, delivering music with greater balance, clarity, and emotional impact.