120:

• Type: Mono/Stereo Tuner
• Tuning Bands: FM, MW
• Tuning Scale: Analogue
• FM Tuning Range: 88 to 108 MHz
• MW Tuning Range: 540 to 1605 kHz
• Sensitivity: 2.3uV (FM), 20uV (MW)
• Signal to Noise Ratio: 60dB (FM), 46dB (MW)
• Distortion: 0.3% (FM), 1% (MW)
• Selectivity: 80dB (FM), 26dB (MW)
• Frequency response: 50Hz to 15kHz (FM), 50Hz to 4kHz (MW)
• Dimensions: 15.4 x 5.8 x 11.8 inches

250:

• Power output: 125 watts per channel into 8Ω (stereo)
• Frequency response: 2Hz to 100kHz
• Total harmonic distortion: 0.1%
• Damping factor: 100
• Input sensitivity: 1.5V
• Signal to noise ratio: 106dB
• Dimensions: 15-3/8 x 6-1/8 x 9-1/2 inches
• Weight: 28lbs
• Year: 1974

3300:

• Frequency response 6Hz to 80kHz.
• Total harmonic distortion 0.02%
• Gain 20.8dB (line)
• Channel separation 40dB (line)
• Output 3V (Pre out)
• Dimensions 15-3/8 x 5-3/4 x 10-1/2 inches.
• Weight 14lbs.