Yamaha - AX-400 & TX-400 Stereo set - Multiple models

The Yamaha AX-400 stereo amplifier and TX-400 AM/FM tuner form a matching audio set from Yamaha's Natural Sound series (circa late 1980s), both finished in silver.
The AX-400 is known for Yamaha's characteristic Natural Sound philosophy: a neutral, uncolored presentation with an open sound character. The amplifier features a variable Loudness control (which allows you to adjust the contour precisely to the listening volume), a CD Direct switch to bypass unnecessary tone circuits, and a built-in phono stage that is switchable for both MM and MC cartridges. The matching TX-400 tuner is known for stable digital tuning and clear reception on both FM and AM with memory for preferred stations.
The set is sold together as amplifier and tuner.
In terms of condition, both units are in decent shape with normal signs of use appropriate to their age. Both units have been tested and are working.
Specifications
Yamaha AX-400 (Amplifier)
Type: integrated stereo amplifier
Power (RMS): 2 x 55 Watts at 8 Ohms / 2 x 85 Watts at 4 Ohms
Frequency response: 20 Hz – 20,000 Hz
Inputs: Phono (MM/MC switchable), CD, Tuner, Aux/Tape 1, Tape 2
Functions: CD Direct, continuously variable Loudness, Bass, Treble, Balance
Speaker outputs: A / B / A+B
Dimensions (W x H x D): 43.5 x 13.4 x 33.2 cm
Weight: approx. 6.2 kg
Yamaha TX-400 (Tuner)
Type: AM/FM stereo synthesizer tuner
Frequency bands: FM (87.5 – 108 MHz), AM (522 – 1611 kHz)
Memory: 16 programmable preset stations
Outputs: analog stereo RCA (L/R)
Dimensions (W x H x D): 43.5 x 9.2 x 28.4 cm
Weight: approx. 2.7 kg