All will have a mounting bracket that fits a Nad 3020 and is included. These have M3 threaded mounting holes 20mm apart. 5A Continuous & 80A for temporary inrush current when switch powered on. Sanyo JCX-2600K, JCX-2900K.
eBay
XY-HT21MAX 2.1 Channel TPA3223 200W*2+400W Bluetooth Digital Audio Power Amplifier Module High And Low Tone Subwoofer Sound AMP
Aliexpress UK
A good idea is to replace all the electrolytic capacitors with new ones. They also have a low ESR. You can also get the factory service manual to the NAD 306 as an addition. I will send it in PDF format.
eBay
Paulkitson Fp14000 Power Amplifier 2Channel Amplifier 4Ω 2x4400watt Dj Subwoofer Stage Line Array Speaker Professional Amplifie
Aliexpress UK
A good idea is to replace all the electrolytic capacitors with new ones. They also have a low ESR. You can also get the factory service manual to the NAD C315BEE as an addition. I will send it in PDF format.
eBay
FUHAM CA-108S Digital High-Power 1U Amplifier 700W 2-Channel Audio, for Stage, Outdoor Concerts, Subwoofer Digital Amplifier
Aliexpress UK
5A Continuous & 80A for temporary inrush current when switch powered on. Sanyo JCX-2600K, JCX-2900K. Dual Pole Dual Throw DPDT with 2x (DPDT) switches in one unit.
eBay
FUHAM UR804 Digital Power Amplifier 1000W 4-Channel 8-Ohm Audio, for Disco, Subwoofer Speakers, Stage, Digital Amplifier
Aliexpress UK
Made in Japan. You are getting 1 kit with 4 large Power Capacitors Included. Once you order and item send there will be no cancellation on this kit simple. Power capacitors are made in Australia Hi-End with 10yrs Warranty.
eBay
2PCS LM6172IN DIP8 LM6172 High speed operational amplifier Dual High Speed, Low Pwr Amp new
Aliexpress UK
A good idea is to replace all the electrolytic capacitors with new ones. They also have a low ESR. You can also get the factory service manual to the NAD 3020B as an addition. I will send it in PDF format.
eBay
HiFi Sound Amplifier Digital 600W Peak Power 2 Channel Digital Audio Bluetooth Karaoke Amplifier FM Radio Support Remote Control
Aliexpress UK
A good idea is to replace all the electrolytic capacitors with new ones. They also have a low ESR. You can also get the factory service manual to the NAD 3300 as an addition. I will send it in PDF format.
eBay
shennDare PLA750+CQ190 Active Speaker Amplifier Module with DSP 400W+100W 2-Channel DJ Subwoofer Power Amplifier Board 650W+100W
Aliexpress UK
Made in Japan. You are getting 1 kit with 4 large Power Capacitors Included. Once you order and item send there will be no cancellation on this kit simple. Power capacitors are made in Australia Hi-End with 10yrs Warranty.
eBay
NEW JLH Hood 1969 Hi-End 20W HiFi Stereo 2.0 Channel Class A Power Amplifier Audio Speaker Amp
Aliexpress UK