I HAVE A FEW OF THESE ALL EXCELLENT AS SHOWN.
eBay
MV / microvolt signal amplifier voltage amplifier AD623/AD620 instrumentation amplifier module
Aliexpress UK
CONTACTUM 63 AMP 30mA DOUBLE POLE RCD TYPE AC 230V B6303/2 BS EN 61008
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3D HD 14 Inch Mobile Screen Amplifier Projector Video Movie Amplifier Desktop Display Stand For All Smartphone Screen Amplifier
Aliexpress UK
BRITISH GENERAL 63 AMP 30mA DOUBLE POLE RCCB RCD TYPE AC CUR6330 BG
eBay
C50L/C100L/ZK-MT21 50Wx2+100W 2.1CH Bluetooth 5.0 Amplifier Board Hifi Subwoofer Audio Stereo Amplifier Board Bass AMP AUX input
Aliexpress UK
Fully working and in great condition as shown in the photos.
eBay
DC24V-36V TDA7294 100W+100W Dual channel High Power Audio AMP Amplifier Board DC24-40V Kits Mini Audio Amplifier DIY Kit Board
Aliexpress UK
MK 7860's 63 Amp 30mA D.P RCD ! All Live Tested ! All in good working order. All taken from fully functional boards.
eBay
10pcs LM324 LM358 LM339 LM386 LM324N LM339N LM358P LM386N LM393P DIP8 Operational Amplifiers - Op Amps Dual Op Amp
Aliexpress UK
2 Pole Residual Current Devices. Provides protection against each fault/leakage current and function of isolation. High breaking current withstands capacity. Automatically disconnect the circuit when earth fault/leakage current occurs and exceeds the rated sensitivity.
eBay
Headphone Amplifier Board MAX4410 Miniature Headphone Amplifier Can Be Used As Power Amplifier Preamplifier Instead Of NE5532
Aliexpress UK
Used conditon
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DLHiFi Amplifiers Audio Amplificador TDA7379 CD7379 Power Amplifier Board 38W X 2 DC Stereo Amp Dual channel high power stereo
Aliexpress UK
Used in working condition Price is for one unit only
eBay
Upgraded 5654 Tube Preamplifier Amplifiers HiFi Tube Preamp Bile Buffer Auido Amp Speaker Sound Amplifier Home Theater DIY
Aliexpress UK