Comparing Pionner vs Marantz

Comparing the sound of two little hifi amplifiers:
- Marantz 1040
- Pioneer sa-7300
With Bowers & Wilkins dm-6 speakers
Streamer Raspeberry Pi + Allo Minidac
Volumio + TIDAL Hifi
Marantz Specifications
Power output: 20 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.3%
Input sensitivity: 2.1mV (MM)
Dimensions: 360 x 120 x 280mm
Weight: 7.5kg
Year: 1974-78
Pionner Specifications
Power output: 35 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 50kHz
Total harmonic distortion: 0.3%
Damping factor: 25
Input sensitivity: 2.5mV (MM), 150mV (line)
Signal to noise ratio: 70dB (MM), 90dB (line)
Output: 150mV (line), 30mV (DIN)
Semiconductors: 4 x IC, 20 x transistors, 16 x diodes
Dimensions: 350 x 125 x 282mm
Weight: 7.5kg
Year: 1976