Audio Database

The

Marantz SC-8 120,000yen(around the 1982 time)

Description
 
Control amplifier which carries the tone quality which kept being polished, and a variegated functionality in a symmetrical design.

performing a perfect push pull stream composition to the whole page from MC head amplifier to flat amplifier -- the improvement in a nakedness property, and the reduction in NFB a TIM it is considered as the Low-TIM design which banishes a dynamic distortion at first.

MC head amplifier constitutes the perfect push-pull circuit of a single-sided channel 9 stone stream composition from the first rank of a super-low-noise transistor 2 parallel push pull to a SEPP output stage.
Moreover, phone amplifier has perfect push-pull-circuit composition influenced by the impedance variation of the input/output, and the metal film resistor of less than 1% of an error and less than 2% of polypropylene capacitor are adopted as an equalizer element.

Flat amplifier is an original whole page push-pull circuit, and is used as pure Class-A amplifier.
The two-step Darlington scheme especially according to a super high fT (200-250MHz) power transistor in a final stage is adopted.

The Phono selector carries man-month cartridge loading selector of three positions other than MC head amplifier position.

A right-and-left independent tone control, the mutual dubbing functionality of the two decks, a two-step switchover loudness control, and two outputs switch, and functionalities, such as a High/EQ Subsonic car filter, are carried.

The tone switchpoint which bypasses a tone arm and can attain simple-ization is carried.

The 70-micrometer printed circuit board which made thickness of the Copper foil twice usual is adopted. Moreover, the improvement in a tone quality is aimed at by adopting an oxygen-free-high-conductivity-copper ship and a coaxial cord as a signal path.
Furthermore, quality parts, such as a low scaling-factor foil capacitor which reduced source impedance, a copper plating chassis, and a power cord of 15A, are adopted.


Rating of a mode
Form Stereo control amplifier
Input sensitivity/impedance Phono1 man-month: 2.2mV / 27kohm, 47kohm, 100kohm
Phono2 man-month: 2.2mV / 47kohm
Phono1 MC: 0.12mV/100 ohms
High SFT Level: 150mV / 40kohm
An Output power/impedance 1.5V/100 ohm
THD 0.005%
Cross modulation distortion 0.003%
Frequency characteristic 20Hz-20kHz±0.2dB (RIAA)
SN ratio (IHF-A) Phono MM:86dB
Phono MC:73dB
High Level:104dB
Dimensions Width 474x height 172x depth of 266mm
Weight 8.5kg