Accuphase DG-68 Digital Voicing Equalizer

Accuphase DG-68 Digital Voicing Equalizer with 80 Band Graphic Equalizer

Create the ideal acoustic environment with this fifth-generation Digital Voicing Equalizer featuring ultra-advanced digital technology. The high-resolution, high-definition colour IPS LCD panel allows the use of a stylus pen to directly draw any desired response curve. Intuitive operation and a full complement of sophisticated display functions make sound field compensation swift and easy while giving the user full control. Setting data as well as display screenshots can be saved on a USB flash drive for quick recall at any time. The DG-68 brings out unknown possibilities in music reproduction by controlling the sound field and tone exactly in accordance with the user's preferences.

In 1997, Accuphase introduced a product which revolutionized the concept of the graphic equalizer and made headlines in the audio world: the Digital Voicing Equalizer DG-28. Follow-up models in the DG series brought further improvements which garnered more praise and led to the recognition of the Voicing Equalizer as an indispensable component of the ultimate audio system.

What is a "Voicing Equalizer"?

The Voicing Equalizer from Accuphase brings together two major functions, namely sound field compensation for optimizing the acoustic properties of the listening room, and a graphic equalizer for adjusting individual frequency bands and thereby controlling the tonal quality of the music being played.  A supplied precision microphone is used to measure the acoustics of the listening room and enable the automatic creation of the sound field as desired by the user. The graphic equalizer function then enables further fine tuning and flexible tonal adjustments. As the word "Voicing" also has the meaning of "tuning", the product was named with the idea of tuning the listening room.

DG-68

The fifth generation DG-68 is the result of a major redesign of the operational aspects of the Voicing Equalizer, making it even easier to explore its highly sophisticated capabilities. The dedicated DSP chip employs latest signal processing technology to effortlessly handle the input from both analogue and high-resolution digital sources. A wide complement of digital and analogue input and output connectors provides unprecedented versatility for various connection types, and the highly advanced A / D and D / A converters ensure dramatically improved sound quality and performance both on the analogue input and output side.

How Voicing Works

The internal test signal generator of the DG-68 produces warble tones which are used to drive the speakers via the power amplifier. The sound travels through the sound field and is picked up by the microphone for sound field measurement and compensation.

DG-68 Triple Functionality: Voicing / Equalizer / Analyser

The DG-68 incorporates three complementary functions. The desired function can be selected easily with one of the four large buttons on the Home screen (there are two choices for Voicing). The various buttons and graph displays that are shown for each function can be directly manipulated with the supplied stylus pen. For fine-tuning adjustments, the up / down / left / right cursor buttons at the right side of the front panel will also come in handy during input.

Sound Field Compensation: Voicing

The Voicing function involves measuring the acoustic characteristics of the room using a microphone and then providing compensation to achieve ideal music reproduction conditions.

The user can choose between two adjustment methods for Voicing. With Auto Voicing, the entire process is performed automatically for superior operation convenience. Manual Voicing gives the user full control over each item, enabling manual adjustment while checking the results.

Equalizing Function: Equalizer

The Equalizer allows adjusting the tonal result by selectively boosting or attenuating the level of the music signal in specific frequency bands. The DG-68 offers an amazing 80 bands covering the frequency range up to 100 kHz. By controlling the level in these bands, any desired frequency response can be created.

While listening to actual music, use the stylus pen to draw a response curve. Being able to make adjustments visually while checking the audible result makes all the difference.

Spectrum Analyser Function: Analyser

A spectrum analyser makes it possible to display the actual frequency components of the music being played. The DG-68 divides the frequency spectrum into 35 bands, reaching up to 50 kHz. The level of each band is analysed and shown on screen.

When using the Equalizer, the Analyser lets the user first check the spectral frequency distribution of the music, to determine where adjustments will be most effective.

HS-Link Ver. 2

HS-Link Version 2 is a further enhanced version of the Accuphase HS-Link interface, providing expanded sampling frequency and quantization support. With HS-Link Ver.2, the data and clock signal are transmitted separately, and high sampling frequencies up to 5.6 MHz 1-bit DSD and 384 kHz 32-bit PCM are supported. The DG-68 supports both HS-Link Ver. 1 and HS-Link Ver. 2 signal transmission.

Why Choose The Accuphase DG-68

The Accuphase DG-68 feels like the kind of component that quietly transforms your whole listening experience, blending ultra-advanced digital tech with an easy, almost playful interface. Its gorgeous high-definition colour LCD and stylus-driven control make shaping your own response curve feel surprisingly natural, while the Voicing Equalizer’s twin talents—room compensation and finely grained tonal shaping—give you the sense that you’re actually “tuning” your space as much as your system. With its precision microphone, high-speed DSP, and clever triple-mode operation (Voicing, Equalizer, Analyser), the DG-68 turns what could have been a technical chore into an almost addictive process of refinement, and the ability to save settings or screenshots to USB just rounds out the convenience. Add in wide-ranging analogue and digital connectivity, top-tier A/D and D/A conversion, and support for HS-Link Ver.2, and you’ve got a fifth-generation design that not only honours the legacy of the original DG-28 but pushes the idea of a voicing equalizer into genuinely exciting territory.