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 centre will satisfy even the most demanding music lover.

Warranty:

1-year manufacturer’s warranty

Features:

  • AAVA volume control with the newly developed ANCC feature
  • Five line-level and two balanced inputs for optimum flexibility
  • Recorder connection support
  • Logic-control relays for the shortest signal paths
  • Separate power supplies for left and right channels
  • Fully modular construction with individual left/right amplifier units
  • Phase selection function
  • Tone controls
  • Dedicated headphone amplifier
  • Option board slots provide additional versatility for digital input handling and analog record playback

SOUND QUALITY AND EXPANDABILITY TAKEN TO THE NEXT LEVEL
Since being founded in 1972, Accuphase has never wavered from its philosophy of creating truly high-class audio components. A thorough dedication to quality in the interest of optimal sound reproduction has allowed the company to introduce many legendary models, highly regarded for their innovativeness, sonic excellence, and solid reliability. The Stereo Control Centre C-2150, while inheriting the outstanding design approach and technology of models such as the C-3900, also represents a full model change from the older C-2110, with further enhanced overall circuitry. It provides the flexibility to handle any kind of source while maximising its inherent sound quality potential.

Accuphase’s ground-breaking AAVA
(Accuphase Analog Vari-gain Amplifier) Volume control, first introduced in the model C-2800, has been continually further refined and improved. AAVA operates fully in the analog domain, but it eliminates all potentiometers from the signal path. This has several advantages, such as (1) outstanding S/N ratio, (2) extremely low distortion, (3) virtually no change in frequency response and sound quality at any listening level, (4) minimal left/right level differences (tracking errors), and (5) minimal left/right crosstalk. The result is a volume control that far surpasses conventional concepts.

The C-2150 features separate power supplies for the left and right channels, each with a dedicated power transformer, filtering capacitors, and peripheral circuitry. The various unit amplifiers are also entirely separate for the two channels, arranged on a motherboard in fully monaural construction. This prevents unwanted crosstalk and interaction both on the electrical and the physical plane. Preamplifier functionality has also been given due attention, with tone controls, a loudness compensator, recorder connection support, and other convenient features. The phase setting can be made for each input position separately, and EXT PRE connectors offer further enhanced flexibility.

A range of sophisticated option boards opens up even more possibilities. The newly developed Digital Input Board DAC-40 features a USB port and support for high-bit, high-sampling frequency signals up to 192 kHz/24 bits. This allows reproduction, for example, of high-quality music library data residing on a computer. The DAC input selector button makes it easy to switch between the optical, coaxial, and USB inputs. For the first time in a preamplifier, the sampling frequency of a digital signal onto which the amplifier has locked can be shown as a numeric readout. The newly developed Analog Disc Input Board AD-50 is also available, ideal for high-grade reproduction of analog records using either MC or MM phono cartridges.

Technical Specifications:

Frequency Response BALANCED/LINE INPUT 3 – 200,000 Hz ＋0 －3.0 dB 20 – 20,000 Hz ＋0 －0.2 dB
AD INPUT [MM/40 dB, MC] 20 ‒ 20,000 Hz ±0.2 dB AD INPUT [MM/30 dB]: 20 ‒ 20,000 Hz ±0.3 dB
Total Harmonic Distortion (for all inputs) 0.01%
Input Sensitivity, Input Impedance Input sensitivity For rated output For 0.5 V output

Input impedance BALANCED
252 mV 63 mV
40 kilohms
(20/20 kilohms)
LINE 252 mV 63 mV
20 kilohms AD: MM/40 dB INPUT 2.5 mV 0.63 mV
40 kilohms AD: MC/66 dB INPUT 0.126 mV 0.0315 mV
30/100/300 ohms, switchable
Rated Output Voltage,
Output Impedance		 BALANCED/LINE OUTPUT 2 V 50 ohms RECORDER REC (with AD input) 252 mV 200 ohms
S/N Ratio Input shorted (A-weighting) S/N ratio at rated output
EIA S/N BALANCED
110dB
108 dB LINE
110 dB 108 dB AD: MM40/60 dB INPUT 80 dB 86 dB AD: MC/66 dB INPUT 68dB 76 dB
Maximum Output Level (0.005% THD, 20 ‒ 20,000 Hz) BALANCED/LINE OUTPUT: 7.0 V RECORDER REC (with AD input): 6.0 V
Maximum Input Voltage BALANCED/LINE INPUT: 6.0 V
Maximum AD Input Voltage
(1 kHz, 0.005% THD)		 MM /40 dB INPUT: 60 mV MC 66 dB INPUT: 3.0 mV
Minimum Load Impedance BALANCED/LINE OUTPUT: 600 ohms RECORDER REC 10 kilohms
Gain (18 dB position)
Gain selector switch: 12/18/24 dB switchable		 BALANCED/LINE INPUT → BALANCED/LINE OUTPUT: 18 dB LINE INPUT → LINE OUTPUT: 18 dB LINE INPUT → BALANCED OUTPUT: 18 dB LINE INPUT → LINE OUTPUT: 18 dB AD [MM: 40 dB] INPUT → BALANCED/LINE OUTPUT: 58 dB AD [MM: 40 dB] INPUT → REC OUTPUT: 40 dB AD [MC: 66 dB] INPUT → BALANCED/LINE OUTPUT: 84 dB AD [MC: 66 dB] INPUT → REC OUTPUT: 66 dB
Tone Control Bass / Treble controls turnover frequencies and adjustment range BASS: 40 / 100 Hz ±10 dB TREBLE: 8 / 20 kHz ±10 dB
Loudness Compensation ＋6 dB (100 Hz)
Headphone Jack Output level: 2 V (40 ohms), Suitable impedance: 8 ohms or above
Subsonic Filter 25 Hz: –12 dB/octave
Attenuator –20 dB
Power Requirements 120 V/220 V/230 V AC, 50/60 Hz (Voltage as indicated on rear panel)
Power Consumption 34 watts
Maximum Dimensions Width 465 mm (18.3”)
Height 150 mm (15.9”)
Depth 405 mm (15.9”)
Mass 16.9 kg (37.0 lbs) net 23.0 kg (50.7 lbs) in shipping carton