Yamaha A-S1000 Owner's Manual page 22

Specifications
■ Tone control characteristics
+15
+12.5
+10
+7.5
+5
+2.5
0
–2.5
–5
–7.5
–10
–12.5
–15
10 20
■ Total harmonic distortion
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
0.0005
0.0002
0.0001
2
22
En
50 100 200 500
5 10
1k 2k 5k
Frequency (Hz)
1kHz
20
Output (W)
10k 20k 50k 100k
20kHz
20Hz
50 100