Accuphase C-27

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STEREO PHONO AMPLIFIER The analog phono record is experiencing a quiet boom among discerning music lovers. It goes without saying that a phono equalizer of high quality is essential to extract the enormous richness of sonic information engraved on vinyl records. Furthermore, the selection of tonearm, cartridge and other parts of the playback system requires a thorough understanding of audio fundamentals. This is a fi eld where some investment of time and effort can yield immensely satisfying results

 

 


Accuphase has gained considerable expertise in designing and building phono equalizers, either integrated in preamplifi ers or available as option (AD-2810 and AD-20). In response to the wishes of audiophiles worldwide, we have now developed the C-27 as a high-end standalone phono equalizer amplifier, capable of exploring the possibilities of the analog disc to the fullest.
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  • Separate MM/MC amplifi er circuitry ensures ultra low noise
  • Highly precise equalization with only ±0.3 dB RIAA deviation
  • Versatile impedance switching with three settings for MM and six settings for MC
  • Gain switching enables high gain of up to 70 dB
  • Three analog player inputs with separate settings memory
  • Balanced and unbalanced analog outputs
  • Polarity selector for balanced outputs
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  • C-27 Guaranteed Specifi cations

    [Guaranteed specifi cations are measured according to EIA standard RS-490.]

    ● RIAA Deviation MM 10 - 100,000 Hz ±0.5 dB

    20 - 20,000 Hz ±0.3 dB

    MC 10 - 100,000 Hz ±0.3 dB

    ● Total Harmonic Distortion 0.005%

    ● Gain *INPUT → BALANCED/UNBALANCED OUTPUT

    GAIN button OFF (Normal) MM: 30 dB

    MC: 60 dB

    GAIN button HIGH MM: 40 dB

    MC: 70 dB

    ● Input Sensitivity (at rated output: 1 kHz, 2 V)

    MM 30 dB: 63.2 mV

    40 dB: 20.0 mV

    MC 60 dB: 2.0 mV

    70 dB: 0.63 mV

    ● Maximum Input Voltage (1 kHz, THD 0.005%)

    MM 30 dB: 300 mV

    40 dB: 95 mV

    MC 60 dB: 9 mV

    70 dB: 2.9 mV

    ● Maximum Output Level (THD 0.002% 20 - 20,000 Hz)

    BALANCED/UNBALANCED OUTPUT: 8.0 V

    ● Input Impedance MM settings: 1 kilohm, 47 kilohms, 100 kilohms

    MC settings: 3 ohms, 10 ohms, 30 ohms, 100 ohms,

    300 ohms, 1 kilohm

    ● Rated Output and Output Impedance

    BALANCED OUTPUT 2 V 50 ohms

    UNBALANCED OUTPUT 2 V 50 ohms

    ● S/N Ratio

    Input terminal

    Input shorted (A weighting)

    S/N ratio at rated output

    MM, 30 dB 110 dB

    MM, 40 dB 102 dB

    MC, 60 dB 98 dB

    MC, 70 dB 90 dB

    ● Minimum Load Impedance BALANCED/UNBALANCED OUTPUT: 10 kilohms

    ● Crosstalk –90 dB or less (10 kHz)

    ● Residual Noise (A-weighted) GAIN button OFF (Normal) MM : 6 μV or less

    MC : 25 μV or less

    GAIN button HIGH MM : 16 μV or less

    MC : 63 μV or less

    ● Subsonic Filter –12 dB/octave, 10 Hz

    ● Power Requirements AC120 V/230 V (Voltage as indicated on rear panel)

    50/60 Hz

    ● Power Consumption 35 W

    ● Maximum Dimensions Width 465 mm (18-5/16")

    Height 121 mm (4-3/4")

    Depth 405 mm (15-15/16")

    ● Mass 14.5 kg (32.0 lbs) net

    20.0 kg (44.1 lbs) in shipping carton