LA90 Discrete Power Amplifer specifications:

Mode:
Stereo:
THD+N @1kHz (A-wt):
THD+N@20-20kHz 90kBw(No-wtw):
SNR @A-wt: 141dB
Dynamic Range @A-wt: 141dB
Frequency Response:
20Hz-40kHz (±0.2dB)
10Hz-100kHz (±0.4dB)
Output Level:
51Vpp @4Ω
58Vpp @80Ω
Noise @A-wt:
Channel Crosstalk @1kHz: -138dB
Input sensitivity:
7.3Vrms @G=L
2.2Vrms @G=H
Gain:
9.4dB @G=L
19.4dB @G=H
Channel Balance: 0.2dB
Output Impedance: 120W X 2 @4Ω THD+N 100W x 2 @4Ω THD+N 66W x 2 @8Ω THD+N 56W x 2 @8Ω THD+N Load Impedance: ≥4Ω

Mode:
Mono:
THD+N @1kHz (A-wt):
THD+N@20-20kHz 90kBw(No-wtw):
SNR @A-wt: 143dB
Dynamic Range @A-wt: 143dB
Frequency Response:
20Hz-40kHz (±0.2dB)
10Hz-100kHz (±0.4dB)
Output Level:
80Vpp @4Ω
106Vpp@8Ω
Noise @A-wt:
Channel Crosstalk @1kHz: -
Input sensitivity:
6.9Vrms@G=L
2.2Vrms@G=H
Gain:
15.4dB @G=L
25.4dB @G=H
Channel Balance: -
Output Impedance: 180W x1 @4Ω THD+N 220W x1 @8Ω THD+N 180W x1 @8Ω THD+N Load Impedance: ≥4Ω