Accuphase C-2300

Stereo pre-amplifier

PRECISION STEREO CONTROL CENTER

For more than half a century, Accuphase has continued its relentless pursuit of creating the ideal volume control circuitry. The C-2300 preamplifier utilizes Balanced AAVA – the successor of the AAVA system – to control volume without sacrificing vibrancy in the source sound. A newly added 4-band tone control enables fine adjustments to sound tone. Experience the sonic depth from the combined sound quality and superior features the C-2300 provides.

Main Features

• Balanced AAVA volume control
• 4-band tone control
• Quiet and smooth volume sensor construction
• Ample inputs: 5 Line and 2 Balanced
• Independent power supplies and unit amplifiers for left and right
• Phase setting memory for each input
• Highly reliable logic-controlled signal switching relays
• High-quality headphone amplifier
• Additional option boards support digital signals and analog records

Innovation – Leading-edge technology

• Balanced volume control, Balanced AAVA

Conventional preamplifiers use variable resistors to adjust volume, which causes contacts to deteriorate and creates grit while increasing noise at normal volume levels. AAVA, however, produces multiple, widely varying signals from the input signal and controls volume by changing the combination of those signals. This achieves minimum noise at all volume levels without any grit. The C-2300 incorporates “Balanced AAVA” consisting of balanced “AAVA” circuits, which further reduces the noise level by approximately 10% over the C-2450.

• Quiet and smooth volume sensor design

AAVA uses a volume sensor design to detect the position of the volume knob and changes the combination of signals to adjust volume. Machined from an aluminum block in an ultra-precise extrusion process, the C-2300 uses a volume sensor design developed in-house with hefty, rigid materials to achieve an utterly smooth and solid operation feel when rotating the knob for extremely accurate position detection. Operational sounds are subdued even when using the Remote Commander, resulting in quiet and gratifying volume adjustment.

Sound quality – In pursuit of the highest quality audio

• Separate unit amplifiers for left and right

Music signal circuits like the AAVA contain five unit amplifiers. By separating the left and right channels, the attention to detail in the unit amplifiers works to suppress electrical interference and prevent any negative impacts on sound quality.

• Separate power supplies for left and right channels

The power source driving the circuits can greatly affect sound quality. Each side of this preamplifier features a high-quality transformer housed inside its own case. The two 10,000 μF high-capacity, high-quality custom-made filtering capacitors mounted on each side supply power with margins and are highly impervious to load fluctuations.

Option boards

Two option boards can be installed on the rear panel. Three types of option boards are available.

• DAC-60 Digital Input Board

High-performance DAC with two ES9016K2M chips from ESS Technology driven in parallel.

• AD-60 Analog Disc Input Board

Features a high-performance phono equalizer for playback of analog discs.

• LINE-10 Line Input Board

Provides an additional set of unbalanced line level inputs.

Supplied Accessories

• AC power cord
• Audio cable with plugs AL-10, 1m
• Remote commander RC-250