Accuphase DG-78

Overview

The Accuphase DG-78 Digital Voicing Equalizer is a purpose built acoustic correction and voicing system designed to analyze the interaction between your loudspeakers and your listening room, then apply precise, musically transparent adjustments to the frequency response. Rather than a conventional tone control, the DG-78 uses a supplied measurement microphone to capture the actual in-room response at the listening position and then lets you shape the sound with fine graphic control across many frequency bands.

At its core, the DG-78 combines high resolution analog to digital conversion, powerful DSP based voicing, and reference grade digital to analog conversion so that the entire correction process happens in the digital domain with exceptional accuracy. Accuphase engineered the unit to preserve the character of the source while removing the peaks, dips, and standing wave artifacts that even excellent rooms introduce. A large graphical display makes the measured curve and the target curve easy to see and to adjust.

The DG-78 is for the listener who has invested in a resolving system and wants to hear it at its full potential in a real room. It suits dedicated listening spaces and challenging domestic environments alike, and it functions as both a voicing equalizer and a capable digital processor within a high end chain.

Key Features

• Digital domain voicing equalization that shapes in-room response without conventional analog tone circuitry
• Supplied measurement microphone captures actual response at the listening position
• Automatic response measurement with clear graphical display of measured and target curves
• Fine multi band graphic control for precise frequency response tailoring
• High resolution analog to digital and digital to analog conversion for transparent processing
• Multiple voicing memory presets for different sources, seating positions, or listening moods
• Comprehensive digital and analog input and output complement for flexible system integration
• Built to Accuphase standards with rigid construction and long term reliability in mind

How the DG-78 Compares

Accuphase DG-78 vs Accuphase DC-1000

The DG-78 is focused on measuring and voicing your room's acoustic behavior, correcting response anomalies in the digital domain. The DC-1000 is a reference precision digital processor whose mission is pure, uncolored conversion of digital sources with the acclaimed MDSD topology. Choose the DG-78 when room interaction is the limiting factor, and the DC-1000 when your priority is the most transparent possible digital to analog conversion. See the Accuphase DC-1000.

Accuphase DG-78 vs Accuphase DC-500

The DC-500 is a dedicated MDSD digital processor engineered around the cleanest reproduction of digital source material. The DG-78 shares high grade conversion but adds measurement and voicing so you can actively correct the room. If your listening space is well behaved and you want conversion alone, the DC-500 fits; if you need to tame peaks and dips at the listening seat, the DG-78 is the tool. See the Accuphase DC-500.

Accuphase DG-78 vs Accuphase DF-75

The DF-75 is a digital frequency dividing network intended for active multi amplifier systems, splitting the signal into precise crossover bands in the digital domain. The DG-78 instead concentrates on whole system voicing and room correction rather than crossover duties. They serve very different design goals and can appeal to builders of very different systems. See the Accuphase DF-75.

Complete the System

Build a resolving, room correct system around the DG-78 with Accuphase electronics and loudspeakers that reward its precision.

• Accuphase C-2900 A precision stereo preamplifier that anchors a full separates chain, giving the DG-78 a transparent, low noise control center to feed.
• Accuphase A-80 A pure Class-A stereo power amplifier whose refinement and grip let the DG-78's corrected response reach the speakers intact.
• Accuphase E-800S For a simpler single chassis approach, this Class-A integrated pairs naturally with the DG-78 while keeping the signal path elegant.
• Marten Parker Trio Diamond A highly resolving floorstander that reveals the subtle refinements the DG-78 makes to in-room response.
• Spendor Classic 200 A full range three way floorstander whose room interaction and low end benefit clearly from the DG-78's voicing capabilities.

Frequently Asked Questions

What is the Accuphase DG-78?
It is a digital voicing equalizer that measures your speakers' response in your room and applies precise, transparent frequency corrections in the digital domain.

How does the DG-78 correct my room?
It uses the supplied measurement microphone to capture the actual response at your listening position, then lets you shape a target curve with fine multi band graphic control.

Does it include a measurement microphone?
Yes, a calibrated measurement microphone is supplied so you can perform in-room analysis out of the box.

Is the DG-78 a tone control?
No. Rather than simple bass and treble adjustments, it performs measurement based voicing across many frequency bands for far greater precision.

Does processing happen in the analog or digital domain?
Correction is performed in the digital domain, with high resolution conversion on both sides to preserve transparency.

Can I store more than one voicing setting?
Yes, the DG-78 offers multiple voicing memory presets for different sources, seating positions, or listening preferences.

What inputs and outputs does it have?
It provides balanced and unbalanced analog connections along with coaxial and optical digital inputs and outputs for flexible system integration.

Where does the DG-78 go in my system?
It typically sits between your source or preamplifier and the rest of your chain so its voicing applies to the signal reaching your amplifier and speakers.

Will it change the character of my source?
It is designed to correct room induced artifacts while preserving the character of your source and electronics.

Is the DG-78 suitable for challenging rooms?
Yes, it is especially valuable in rooms with standing waves, bass modes, or reflections that even good acoustics cannot fully resolve.

Can it be used with an all Accuphase system?
Absolutely. It pairs naturally with Accuphase preamplifiers, power amplifiers, and integrated amplifiers for a coherent chain.

How is it different from the DC-1000?
The DC-1000 is a reference digital processor focused on pure conversion, while the DG-78 adds measurement and room voicing to its capabilities.

Does it display the correction curve?
Yes, a graphical display shows both the measured response and the corrected target curve for easy adjustment.

Can I bypass the voicing when I want to?
The DG-78 lets you compare corrected and uncorrected playback so you can evaluate its effect at any time.

What speakers pair well with the DG-78?
Highly resolving floorstanders such as the Marten Parker Trio Diamond or full range designs like the Spendor Classic 200 clearly reveal its refinements.

Is professional setup required?
The measurement process is designed to be user friendly, though our team can assist with optimal placement and voicing for your room.

How long is the warranty?
The DG-78 carries a 3 year parts and labor warranty for the original owner when purchased from an authorized dealer.

Is All Elite Audio an authorized Accuphase dealer?
Yes, we are a fully authorized Accuphase dealer, so your DG-78 is covered by the full manufacturer warranty.

Does the DG-78 work with high resolution digital sources?
Yes, its high resolution conversion and DSP are engineered to handle modern digital source material transparently.

Why buy from All Elite Audio?
As an authorized Accuphase dealer in Maryland, we offer genuine products with full warranty coverage, expert system matching, and dedicated support to help you get the most from your DG-78.