Yokohama, Japan | 2019 – The C-2150 is a new addition to the highly acclaimed Accuphase lineup of quality High End Audio Electronics.
Newly developed ANCC makes AAVA even better: The next-generation control center featuring latest technology.
The C-2150 for the first time combines a new topology called ANCC with the AAVA volume control principle. As a result, music reproduction is supple, elegant and full of transparency, with a spatial expression capability that makes one forget the presence of any volume control circuit. With a functionality level close to higher-end models and a versatile array of input and output terminals, plus the choice of adding option boards, the C-2150 provides fully immersive music enjoyment. This next-generation control center will satisfy even the most demanding music lover.
Innovation – The leading edge of technology
AAVA operation principle is purely analog
AAVA converts the music signal into 16 differently weighted current streams (1 / 2, 1 / 22, … 1 / 215, 1 / 216) which are combined according to the position of the volume control knob, resulting in exactly the desired listening level.
Drastic reduction of distortion and noise
ANCC: Accuphase Noise and distortion Cancelling Circuit
The C-2150 uses ANCC topology for the I-V converter amplifier, bal- anced output amplifier, and headphone amplifier. This innovative topol- ogy adds a sub-amplifier for effectively canceling noise in the main amplifier circuit. The use of low-noise technology in the sub-amplifier (noise density: 1.5 nV / √Hz) further enhances the benefits of ANCC. By incorporating ANCC in the I-V converter amplifier and the balanced amplifier of the AAVA section, a further drastic reduction in noise is achieved, especially at low to medium volume level positions.
High reliability – Separate unit amplifiers for left and right
The C-2150 comprises five separate amplifiers: input buffer, V-I converter, I-V converter, output buffer, and headphone. These are configured as five separate circuit boards arranged on a motherboard, providing ample space for components and ensuring outstanding reliability and performance. Left and right channels are kept completely separate to prevent unwanted electrical interaction.
- Logic-control signal switching relays for shortest signal paths
- Five line level and two balanced inputs
- Line input and output connectors for a recorder
- EXT PRE function allows use of external pre- amplifier
- Individual phase setting for each input
- Stereo signal can be switched to monophonicoperation
- Instrumentation amplifier principle for input buffer
- AAVA also adjusts left / right channel balance
- AAVA circuitry uses thin-film resistors to minimize thermal fluctuations and current noise
- Convenient attenuator is useful for example when operating an analog record player
- Loudness compensator enhances low end presence
- Tone controls using summing active filters
- Dedicated headphone amplifier using ANCCfor optimum sound quality
- Maximum gain can be set to 12 dB, 18 dB, or 24 dB
- Separate power supplies for left and right channels prevent mutual interference
- On / off switching capability for level / frequency display
- Champagne-gold front panel and high-gloss side panels
- Two option board installation slots
- DAC input selector button for use when digitalinput board (DAC-50 or DAC-40) is installed
- Numeric indication of digital signal sampling frequency (when DAC-50 or DAC-40) is in- stalled)
Up to two option boards can be inserted into dedicated slots on the rear panel. Three types of option boards are available.
Digital Input Board DAC-50 High-performance DAC with two AK4490EQ chips from Asahi Kasei Microdevices driven in parallel.
Analog Disc Input Board AD-50 – Features a high-performance phono equalizer for playback of analog records.
● Supports MC and MM cartridges
● MC load impedance selector button
● Subsonic filter
C-2150 Guaranteed Specifications