Accuphase C-220

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Technic details

Specifications

Type:	Disk dedicated preamplifier
Frequency response:	20Hz to 20kHz, ± 0.2dB
Harmonic distortion factor:	0.01% (20Hz to 20kHz, rated output)
Rated input / impedance:	DISC 1, 2 (Head amp off) - 2mV / 100Ω, 30kΩ, 47kΩ, 100kΩ DISC 1, 2 (Head amp on) - 0.1mV / 100Ω

Rated output / impedance:	Main output - 2V / 50Ω (Volume maximum, rated input) Fixed output - 150mV / 200Ω
Minimum load impedance:	Main output - 5kΩ Fixed output - 10kΩ
S / N:	Head amp off - 85dB (input short, IHF-A curve, at rated input) Head amp on - 72dB (input short, IHF-A curve, at rated input)
Input conversion noise:	Head amp off - -139 dBV (Input short circuit, IHF-A curve) Head amp on - -152 dBV (Input short circuit, IHF-A curve)
Maximum input (1kHz, distortion rate 0.01%):	Head amp off - 400 mV rms Head amp on - 20 mV rms
Minimum input level:	10 Vrms (20Hz to 20kHz, distortion rate 0.01%)
Gain (DISC input → Main output):	Head amp off - 60dB Head amp on - 86dB
Volume adjustment interlock error within:	1dB
Balance adjustment:	0, -0.5, -1, -1.5, -2, -3, -4, -5, -6, -7dB, -∞ (both left and right)
Semiconductor used:	Transistors - 109 FET - 16 pieces Diode - 34 pieces
Power supply voltage:	AC 100V / 117V / 220V / 240V, 50Hz / 60Hz
Power consumption:	65W

External dimensions:	A type (W x H x D) - 482 x 82 x 345mm B type (W x H x D) - 445 x 82 x 349mm
Weight:	10.7 kg
Year:	1977

Accuphase C-220

Technic details

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