Accuphase DG-78 Digital Voicing Equalizer

Accuphase DG-78 Digital Voicing Equalizer

Elevate your listening environment to perfection with the Accuphase DG-78 Digital Voicing Equalizer — the ultimate tool for precise room acoustic compensation and total sound field control in high-end audio systems.

As the successor to the acclaimed DG-68, the DG-78 brings significant upgrades in user interface and conversion technology while retaining the proven tri-mode architecture (Voicing, Equalizer, and Analyzer). It combines advanced DSP-based room correction, manual graphic equalization, and real-time spectrum analysis in one elegant chassis, delivering unparalleled sonic refinement.

The DG-78 features a high-precision electrostatic touch panel with warm-toned displays for intuitive operation and improved visibility. It employs cutting-edge components including 352.8 kHz 32-bit AKM AK5578EN A/D converters (4 parallel per channel), eight ESS ES9028PRO DAC chips per channel in MDS++ configuration, and a powerful Analog Devices SHARC DSP capable of native processing up to 384 kHz without downsampling. Accuphase’s ANCC circuitry further minimizes noise and distortion for exceptional clarity.
Designed for the most discerning audiophiles, the DG-78 supports both analog and digital signal paths with extensive connectivity. It excels at correcting room modes, optimizing speaker integration, and tailoring the sound to your exact preferences — whether for critical listening, vinyl playback, or digital streaming.

Key Specifications

Fully digital signal processing with separate Voicing and Equalizer functions
Smooth Voicing for automated room/speaker compensation
High-resolution real-time analyzer

• Inputs: Analog (RCA / XLR), Digital (HS-Link, Coaxial, Optical)
  
• Outputs: Analog (RCA / XLR), Digital
  
• DAC: 8 × ESS ES9028PRO per channel with MDS++
  
• DSP: Analog Devices SHARC ADSP-21565K
  
• Frequency response and adjustment bands refined from predecessor models (typically 1/6 or 1/3 octave graphic EQ with ±12 dB range)
  
• Dimensions: 465 × 161 × 396 mm (W×H×D)
  
• Weight: 15.0 kg

Top 20 Questions About Accuphase DG-78

What is the main purpose of the Accuphase DG-78?
It provides advanced digital room correction, graphic equalization, and real-time analysis to optimize your listening room acoustics and overall sound quality.

How does the DG-78 improve upon the DG-68?
It features an electrostatic touchscreen interface, superior ADC/DAC chips, higher native sampling rates, and a redesigned DSP for enhanced performance and usability.

Does the Accuphase DG-78 include automatic room correction?
Yes, the Smooth Voicing function automatically compensates for room and speaker characteristics.

Can the DG-78 function as a standalone DAC?
Yes, its high-performance DAC section supports high-resolution digital inputs with exceptional conversion quality.

What display and control improvements does it offer?
A capacitive electrostatic touch panel with warm-toned high-resolution displays for more intuitive curve drawing and operation.

Is the DG-78 suitable for both analog and digital sources?
Absolutely — it handles analog and digital inputs/outputs seamlessly in the signal chain.

How many frequency bands does the equalizer provide?
It offers precise multi-band graphic equalization (building on the DG-68’s 67–80 band capability) for detailed adjustments.

Does it support high-resolution audio?
Yes, with native processing up to 384 kHz / 32-bit and DSD compatibility via HS-Link.

Where should the DG-78 be placed in the signal chain?
Typically between source/preamp and power amp, or integrated into a full system for room correction.

Can I manually draw EQ curves?
Yes, the stylus-friendly touchscreen allows direct drawing of desired response curves.

What speakers or systems pair best with the DG-78?
It benefits virtually any high-end setup, especially those in challenging rooms or with full-range floorstanders.

Does the DG-78 run hot or require special ventilation?
It runs normally like other Accuphase components; standard ventilation is sufficient.

Is a remote control included?
It features comprehensive front-panel and touchscreen control; check specific accessories with your dealer.

How does the analyzer function work?
It provides real-time frequency response monitoring with warble tones and spectrum display for precise tuning.

Can the DG-78 improve bass response in my room?
Yes — it excels at correcting low-frequency room modes for tighter, more accurate bass.

Is the build quality up to Accuphase standards?
Absolutely, with premium chassis construction and renowned Japanese engineering.

Does it support balanced connections?
Yes, with XLR analog inputs and outputs for low-noise performance.

What warranty does the Accuphase DG-78 include?
Manufacturer’s standard warranty (typically 2–3 years); contact your authorized dealer for details.

Where can I get expert help with the Accuphase DG-78?
For assistance or product questions, call 443-402-5055 or text 443-402-5064 to reach our team. All Elite Audio is an authorized dealer for Accuphase in Maryland and operates a full home audio showroom.