What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Pioneer SA-6200

 SA-6200 - Pioneer's medium-powered,versatile stereo integrated amplifier.
Equalizer amplifier section with extra-wide dynamic range signal acceptability
Extended frequency response and wide power bandwith with low distortion
Complementary SEPP circuit design employing differential amplifier at the first stage.
It handles up to 2 pairs of speaker systems, 2 turntables, 2 tape decks, as well as 2 auxiliary sound sources and microphone.
Pre-and power amp sections may be separated and used independently
Continuous Power (both channel driven at 1 kHz): 
22 W + 22 W at 4 Ω
18 W + 18 W at 8 Ω
Power Output (in 20-20,000 Hz both channel driven):
15 W + 15 W at 4 Ω
15 W + 15 W at 8 Ω
Total Harmonic Distortion (at rated output power):  less than 0,5%
Intermodulation Distortion (at rated output power):  less than 0,5%
Power Bandwidth (both channel driven IHF):  10 Hz - 70 kHz (THD 0,5%)
Frequency Response:  15 Hz - 80 kHz (+0 dB, -1 dB)
Damping Factor (1 kHz, 8 Ω):  better than 30
Hum and Noise:  better than 90 dB
Residual Hum and Noise (8 Ω pre-and power amp):  less than 1 mV (0,13 µW)
Input Sensitivity/Impedance:
Phono Mag :  2,5 mV/50 k Ω
Microphone :  7,5 mV/ 50 k Ω
Tape Monitor:  150 mV / 100 k Ω
Aux                  :  150 mV/100 k Ω
Tuner :  150 mV/100 k Ω
Bass Control:  ±10,5 dB at 100 Hz
Treble Control:  ±10,5 dB at 10 kHz
High Filter:  4 kHz (6 dB/oct)
Loudness Contour (-40 dB position):  +10 dB at 100 Hz ; +6 dB at 10 kHz
Power Consumption:  15 W max
Dimensions (W x H x D):  415 x 132 x 328 mm
Weight:  9,4 kg

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