YAMAXA Natural Sound AX-500 / KX-500 / TX-500, stare foarte buna, specificatii:

Yamaha Natural Sound AX-500
Stereo Integrated Amplifier (1987-89)
Power output: 85 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.01%
Damping factor: 50
Input sensitivity: 0.16mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 73dB (MC), 90dB (MM), 100dB (line)
Channel separation: 50dB (MM), 50dB (line)
Output: 150mV (line)
Dimensions: 435 x 139 x 332mm
Weight: 7.7kg
5 din 5 conform : audioreview.com/product/amplification/integrated-amplifiers/yamaha/ax-500.html

Yamaha Natural Sound KX-500
Stereo Cassette Deck (1988-90)
Type: 2-head, single compact cassette deck
Track System: 4-track, 2-channel stereo
Tape Speed: 4.76 cm/s
Heads: 1 x record/playback, 1 x erase
Motor: 1 x reel, 1 x capstan, 1 x assist
Tape Type: type I, CrO2, Metal
Noise Reduction: B, C
Headroom Extension: HX Pro
Frequency Response: 20Hz to 20kHz (Metal tape)
Signal to Noise Ratio: 76dB (dolby C)
Wow and Flutter: 0.05%
Total Harmonic Distortion: 1.0%
Input: 50mV (line)
Output: 0.36V (line)
Dimensions: 435 x 117 x 273mm
Weight: 4.5kg

Yamaha Natural Sound TX-500
AM/FM Stereo Tuner (1986-89)
Specifications
Type: Mono/Stereo Tuner
Tuning Bands: FM, MW
Tuning Scale: Digital
Sensitivity: 1.55uV (FM)
Signal to Noise Ratio: 76dB (FM)
Distortion: 0.05% (FM)
Frequency response: 20Hz to 15kHz (FM)
Dimensions: 435 x 92.5 x 283.5mm
Weight: 3.1kg