Pioneer - SX-450 Solid state stereo receiver

The Pioneer SX-450 is a 15-watt-per-channel FM/MW stereo receiver with FM muting, tape monitor switch and provision for 2 pairs of speakers. The unit uses a direct-coupled OCL circuit in the power amplifier with a first-stage differential amplifier. The high FM sensitivity is ensured by a low-noise FET in the front end with a 3-gang linear-t frequency variable capacitor. The SX-450 is equipped with numerous manual controls, including tone controls for bass and treble.
The build quality is very solid. Given its age, this SX-450 looks excellent, helped by the two side panels that have been refurbished. The original sale price of the SX-450 was $200 in 1976, the year of production. By Pioneer Audio’s own admission, the SX-450 was an entry-level stereo receiver; they even stated this in their advertising campaigns.
From a sonic point of view, the SX-450 is impressive. It has a generally very pleasant timbre, which pairs well with a wide variety of loudspeakers. The Pioneer SX-450 will be meticulously packed and shipped insured. Please study the photos carefully to avoid any misunderstandings.
Technical specifications
Tuning range: FM, MW
Output power: 15 watts per channel into 8Ω (stereo)
Frequency response: 20 Hz to 60 kHz
Total harmonic distortion: 0.5%
Damping factor: 25
Input sensitivity: 7.5 mV (microphone), 2.5 mV (MM), 150 mV (line)
Signal-to-noise ratio: 70 dB (MM), 90 dB (line)
Output: 150 mV (line), 30 mV (DIN)
Speaker load impedance: 4 Ω (minimum)
Semiconductors: 1 x FET, 3 x IC, 28 x transistors, 15 x diodes
Dimensions: 448 x 141 x 307 mm
Weight: 8.6 kg
Accessories: FM antenna of Type T
Year: 1976