Citation twenty-one stereo control preamplifier
Specifications
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.005%
Input sensitivity: 0.125mV (MC), 2.2mV (MM), 130mV (line)
Signal to noise ratio: 73dB (MC), 78dB (MM), 84dB (line)
Channel separation: 55dB (MM), 54dB (MC), 56dB (line)
Dimensions: 440 x 90 x 345mm

Citation twenty-four high current power ampifier
Specifications
Power output: 100 watts per channel into 8Ω (stereo)
Frequency response: 0.07Hz to 490kHz
Total harmonic distortion: 0.08%
Damping factor: 65
Input sensitivity: 1V
Signal to noise ratio: 95dB
Speaker load impedance: 4Ω (minimum)
Dimensions: 443 x 155 x 398mm
Weight: 15kg

citation twenty three actieve tracking tuner
Specifications
Type: Mono/Stereo Tuner
Tuning Bands: FM, FM
Tuning Scale: Digital
FM Tuning Range: 87.5 to 108 MHz
MW Tuning Range: 520 to 1710k kHz
Sensitivity: 320uV (FM)
Signal to Noise Ratio: 75dB (FM), 55dB (MW)
Distortion: 0.08% (FM)
Selectivity: 76dB (FM), 61dB (MW)
Output: 950mV (FM)
Dimensions: 443 x 70 x 391mm
Weight: 6.8kg