The Technics SU-5A ST-8L RS1W Vintage Mini HiFi System specific technical specifications:

1. Power Output: The power output of the amplifier (SU-5A) is typically measured in watts per channel (WPC) into a specified impedance, like 8 ohms. For example, it could be around 10 watts per channel.

2. Frequency Response: This specification indicates the range of frequencies the system can reproduce accurately. For instance, it might be something like 20 Hz to 20 kHz, indicating it covers the full range of human hearing.

3. Total Harmonic Distortion (THD): THD measures the level of distortion in the audio signal. A lower percentage is generally better, such as less than 0.1% THD.

4. Signal-to-Noise Ratio (SNR): SNR measures the ratio of the audio signal level to the background noise level. Higher SNR values indicate cleaner audio output. It could be around 80 dB or higher.

5. Input Impedance: This specification refers to the impedance (resistance) seen by the input signal sources. It might be something like 47 kohms.

6. Output Impedance: The output impedance of the amplifier is crucial for matching with speakers. It could be around 4 ohms or 8 ohms.

7. Tuner Sensitivity: For the ST-8L tuner, sensitivity measures how well it can pick up radio signals. It might be expressed in microvolts (µV) or dBf (decibels referred to femtowatts).

8. Tuner Frequency Range: This specification indicates the range of frequencies the tuner can receive. It typically covers AM (Amplitude Modulation) and FM (Frequency Modulation) bands.

9. Cassette Deck Specifications: If the RS1W includes a cassette deck, specifications might include features like playback and recording capability, wow and flutter values, and signal-to-noise ratios.

10. Dimensions and Weight: These specifications are essential for understanding the physical size and portability of the system. It might include dimensions in inches or centimeters and weight in pounds or kilograms.