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MICRO SEIKI CL-M2DC

The Micro Seiki CL-M2DC is a high-end solid-state stereo preamplifier that was introduced by Micro Seiki Corp. in Japan during the late 1970s. The preamplifier is designed to connect to a turntable and amplifies a very low signal from a cartridge to a level that is suitable for use with a power amplifier or a receiver.

The CL-M2DC featured an advanced circuit design and high-quality components, such as low-noise metal film resistors and polypropylene capacitors, to ensure superior sound quality. The preamplifier circuitry consisted of two boards, each measuring 14cm x 9cm. The main board had a hybrid layout with high-quality transistors and an inverting non-feedback circuit.

The unit included precise RIAA EQ curve compensation to ensure highly accurate reproduction of stereo sound from vinyl records. It also offered a range of advanced features, such as a variable impedance matching circuit, a subsonic filter, and a mute circuit.

The CL-M2DC also featured a unique power supply system with a dual DC power supply circuit that minimized noise and distortion in the audio signal. The preamplifier was housed in an elegant rosewood case with a clear acrylic top panel that provided clear views of the interior circuit boards.

Overall, the Micro Seiki CL-M2DC was an exceptional solid-state preamplifier with a high level of sonic accuracy and advanced features. Its stylish design and superior performance made it a highly sought-after unit among turntable enthusiasts and audiophiles.

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Technic details

Specifications

Type:
Line processor
Frequency characteristics:
5Hz to 50kHz, +0 -0.5dB
Total harmonic distortion:
0.005% or less
S / N ratio:
95dB or more

Function phase selection:
0°, 180°
Mode:
ST
L+R
Muting:
ON / OFF
[Input terminal]
Unbalance:
2V, 4 lines
Balance:
600Ω, 0dB, 2 lines
[Output]
Unbalance:
Input +10dB max.
Balance (600Ω):
Input +10dB max.
Power supply:
DC ±12V battery
Power consumption:
10W
Separately sold:
DC power supply unit DC-M2 (¥100,000)

External dimensions (W x H x D):
450 x 100 x 330mm
Weight:
20kg
Year:
1989

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