Cheapo fleabay gainclone kits?

[phase]

I've been wondering about this one;
Assembled LM3886 LME49720 Amplifier Board with Speaker Protection Upgrated HiFi | eBay

 

[terranigma]

This is an interesting LM3875 mono design. Components very closely placed around 3875's legs.

GainCard LM3875 Mono 50W design by 47LAB+Omron speaker protection-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

 

[djduck]

This is an interesting LM3875 mono design. Components very closely placed around 3875's legs.

GainCard LM3875 Mono 50W design by 47LAB+Omron speaker protection-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

That's indeed an interesting take on the LM3875 design. Should be super stable and reliable. However, this is the price for one board only, without the IC. But if you have a little extra to spend, it's definitely worth trying.

As for the LM3886 with the pre-amp and protection, etc... on-board, you'd have to get some extra filtering in there, close to the chips.

As for me, I just couldn't resist the temptation and went for the JLH1969. Should arrive sometime by the end of this month is everything goes well. Cant wait to build it and try it out

 

[motosapien]

That's indeed an interesting take on the LM3875 design. Should be super stable and reliable. However, this is the price for one board only, without the IC. But if you have a little extra to spend, it's definitely worth trying.

As for the LM3886 with the pre-amp and protection, etc... on-board, you'd have to get some extra filtering in there, close to the chips.

As for me, I just couldn't resist the temptation and went for the JLH1969. Should arrive sometime by the end of this month is everything goes well. Cant wait to build it and try it out

Be sure to let us know how you're jlh project goes. It seems to be one of the more attainable class a builds.

 

[terranigma]

As for me, I just couldn't resist the temptation and went for the JLH1969. Should arrive sometime by the end of this month is everything goes well. Cant wait to build it and try it out

Good decision for primarily music listenings..take care of authenticity of parts especially of output transistors. Class A efficiency is something to consider in prolonged daily usage, as you might already aware of.

Regards.

 

[thegag]

LM3886+NE5532 DC Servo 2x68W Current Dynamic Feedback

hey guys,

what do you think about this one LM3886+NE5532 DC Servo 2x68W Current Dynamic Feedback amplifier Board Verstärker | eBay ?

 

[djonesii]

I've built this, and really like the sound. LJM is on this board.

LM3875 50W+50w 8R Amplifier Kit two channel Speaker Protective circuit-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

 

[CharlieLaub]

hey guys,

what do you think about this one LM3886+NE5532 DC Servo 2x68W Current Dynamic Feedback amplifier Board Verstärker | eBay ?

That is about the WORST op-amp for a servo because of high DC offset from input bias current. I highly doubt that much design care was put into this board, so avoid it. Typically a FET input op-amp is used for this reason.

 

[thegag]

That is about the WORST op-amp for a servo because of high DC offset from input bias current. I highly doubt that much design care was put into this board, so avoid it. Typically a FET input op-amp is used for this reason.

Thank you for your answer Charlie. I'm quite new to this topic.
So what could you suggest else? I thought of a cheap board with speaker protection but I don't know if I need the protection function at all. Speakers have 8 Ohm impedance( http://www.referenzboxen.de/hifi/picolino2.htm]Strassacker, Komponenten: Lautsprecher, Frequenzweichen, Bauelemente[/url] ).