Yamaha R-S300 Stereo Receiver Teardown

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Yamaha R-S300:
https://europe.yamaha.com/en/products...

Specifications:

Maximum Power (4 ohms, 1kHz, 0.7% THD, for Europe) 55 W + 55 W
Minimum RMS Output Power (8 ohms, 20 Hz-20 kHz) 50 W + 50 W (0.04% THD)
High Dynamic Power/Channel (8/6/4/2 ohms) 70/77/89/100 W
Total Harmonic Distortion (CD to Sp Out, 20 Hz-20 kHz) 0.015% (25 W/ 8ohms)
Frequency Response 10 Hz-100 kHz ±1 dB
Power Management (Auto Power Standby) Yes (4/6/12 hours)
Signal-to-Noise Ratio (CD) 100 dB (Pure Direct On, 200 mV)
Audio In / Out 5 / 2
Subwoofer Out Yes
FM Signal-to-Noise Ratio (Mono/Stereo) 74 dB / 70 dB
FM 50dB Quieting Sensitivity (IHF, 1 kHz, 100% Mod., Mono) 3 µV (20.8 dBf)
Pure Direct Yes
Standby Power Consumption 0.5 W
Dimensions (W x H x D) 435 x 151 x 387 mm
Weight 8.8 kg

Affordable model with advanced features.

55W x 2 (max), 50W x 2 (RMS) high power output
ART base chassis to minimise noise and vibration
Pure Direct for short and direct signal path
Aluminium-extruded front panel
Continuous Variable Loudness Control
iPhone/iPod/Bluetooth® compatibility
Subwoofer out
Speaker A, B or A+B selection
40-station FM/AM preset tuning