Pioneer SC-70
¥ 19,800 (around 1969)
Commentary
Compact stereo preamplifier.
The equalizer amplifier is a 3-stage direct connection EE feedback type using silicon transistors.
In addition, an FET is used for the tone control circuit, so that there is no fluctuation in the mid-range level due to tone adjustment and the tone is stable.
Equipped with two Phono inputs and AUX inputs.
Accessories such as audio muting switch and headphone output are mounted.
Model Rating
Type | Stereo preamplifier |
Output voltage | 4V |
Harmonic distortion factor | Not more than 0.1% 0.05% or Less (at 2 v Output) |
Frequency characteristic | 10 Hz to 60 kHz |
Input Sensitivity / Impedance | Phono 1, 2 : 4mV/50k Ω Tuner, AUX1, 2, Tape Mon : 250mV/220k Ω |
Recorded output | Tape Rec (pin-jack) : 250 mv |
Tone control (3 dB step) |
Bass : 100 Hz, -9dB to + 12 dB Treble : 10 kHz, -12dB to + 9 dB |
Muting | -20dB |
Hum, noise | Phono : 80 dB or more AUX : 100 dB or more |
Power consumption | Maximum : 5W |
External dimensions | Width 300x Height 115x Depth 254 mm |
Weight | 4.1kg |