The Pioneer SX-1000TW is a solid-state AM/FM stereo receiver from the early 1970s, specifically around 1971. It was part of Pioneer's early efforts in the hi-fi audio market and helped pave the way for more advanced models1.
Power Output: 50 watts per channel into 8 ohms
Frequency Response: 20Hz to 50kHz
Total Harmonic Distortion: Less than 0.5%
Damping Factor: 25
Input Sensitivity: 2.4mV (MM), 51mV (ceramic), 200mV (DIN), 200mV (line)
Signal to Noise Ratio: 80dB (MM), 90dB (line)
Speaker Load Impedance: 4 ohms to 16 ohms
Semiconductors: 4 ICs, 1 FET, 42 transistors, 34 diodes
Dimensions: 405 x 137 x 350mm
Weight: 10.6 kg
The SX-1000TW features a capacitor-coupled push-pull "quasi-complementary" design using four identical NPN transistors for the outputs, which gives it a warm sound. It's known for its great bass and overall warm sound.
Released in the early 1970s, the SX-1000TW represents the solid-state era of audio equipment, marking a transition from vacuum tube-based designs to more reliable and efficient solid-state technology.