An excellent pre-amplifier of good quality I've already tested on audio and I'm satisfied, it already has everything and even the power supply stabilized with IC. You just have to turn on the 3-wire transformer to the proper voltage. It arrived very quickly and in perfect condition. Already well-assembled and with excellent components and good welds. I recommend this article and give a 10 note. I will order more. Look at the pictures! Thank you Banggood

Um excelente pré-amplificador de boa qualidade já testei no áudio e fiquei satisfeito, ele já tem tudo e até a fonte de alimentação estabilizada com CI. Você só tem que ligar o transformador de 3 fios com a voltagem adequada. Chegou bem rapidinho e em perfeitas condições. Já bem montadinho e com excelentes componentes e boas soldaduras. Recomento este artigo e dou nota 10. Vou encomendar mais. Vejam as fotos! Obrigado Banggood

An excellent pre-amplifier of good quality I've already tested on audio and I'm satisfied, it already has everything and even the power supply stabilized with IC. You just have to turn on the 3-wire transformer to the proper voltage. It arrived very quickly and in perfect condition. Already well-assembled and with excellent components and good welds. I recommend this article and give a 10 note. I will order more. Look at the pictures! Thank you Banggood

Great purchases, order placed and delivered 15 days later at the Post Office, congratulations to the BG team for the good work. It arrived in a simple package with padding protecting some assorted items, and in perfect condition. After opening and photography, it touch me a lot of small items in one purchase and I did not have much time available, however, I did some tests and observations. The product that was missing from my BPA project with 4 LM3886 per channel, the modules with LM3886 I have, only the preamplifier was missing. Unfortunately one channel has no sound, the other is working very well, I did a visual examination on the tracks and welding points, and also on the components with a 30x magnifier and good direct lighting and backlight. The assembly plate and the loose knobs, nuts and washers came packaged well, so I examined the components, I also removed the NE5532 and moved them, and the problem continues. When I have more free time, I will use the multimeter and the sign finder to find out where the problem is. Great acquisitions, request made and delivered 15 days later at the Post Office, compliments to the BG team for the good work. It arrived in a simple packaging with padded protecting some assorted items, and in perfect condition. After opening and photographing, it took me as it was a lot of small items in a purchase and I didn't have much time available, however, I did some tests and observations. The product that was missing in my BPA project with 4 LM3886 per channel, the modules with LM3886 I have, was missing only the preamplier. Unfortunately one channel has no sound, the other is working very well, I did a visual examination on the trails and weld points, and also on the components with a 30x Lupa and good direct lighting and retro lighting. It came well packed the mounted board and the loose knobs, nuts and washers, so I examined the components, I also removed the NE5532 and switched places, and the problem continues. When I have more time on my hands, I will use

Great purchases, order placed and delivered 15 days later at the Post Office, congratulations to the BG team for the good work. It arrived in a simple package with padding protecting some assorted items, and in perfect condition. After opening and photographing, it took me a lot of small items in one purchase and I didn't have much time available, however, I did some tests and observations. The product that was missing from my BPA project with 4 LM3886 per channel, the modules with LM3886 I have, only the preamplifier was missing. Unfortunately one channel has no sound, the other is working very well, I did a visual examination on the tracks and welding points, and also on the components with a 30x magnifier and good direct lighting and backlight. The assembled plate and the loose knobs, nuts and washers came packaged well, so I examined the components, I also removed the NE5532 and moved them, and the problem continues. When I have more free time, I will use the multimeter and the signal finder to find out where the problem is. Ótimas aquisições, pedido feito e entregue 15 dias depois na agência dos Correios, congratulações ao time da BG pelo bom trabalho. Chegou em uma embalagem simples com acolchoado protegendo alguns itens sortidos, e em perfeito estado. Após abrir e fotografar, demorei pois foram muitos pequenos itens em uma compra e não tive muito tempo disponível, porem, fiz alguns testes e observações. O produto que faltava no meu projeto do BPA com 4 LM3886 por canal, os modulos com LM3886 eu tenho, faltava apenas o preamplicador. Infelizmente um canal não tem som, o outro está funcionando muito bem, fiz um exame visual nas trilhas e pontos de solda, e também nos componentes com uma Lupa 30x e boa iluminação direta e retro iluminação. Veio bem embalada a placa montada e os knobs, porcas e arruelas soltos, por este motivo examinei os componentes, eu também removi os NE5532 e os troquei de lugar, e o problema continua. Quando tiver mais tempo livre, vou usar

Great purchases, order placed and delivered 15 days later at the Post Office, congratulations to the BG team for the good work. It arrived in a simple package with padding protecting some assorted items, and in perfect condition. After opening and photography, it touch me a lot of small items in one purchase and I did not have much time available, however, I did some tests and observations. The product that was missing from my BPA project with 4 LM3886 per channel, the modules with LM3886 I have, only the preamplifier was missing. Unfortunately one channel has no sound, the other is working very well, I did a visual examination on the tracks and welding points, and also on the components with a 30x magnifier and good direct lighting and backlight. The assembly plate and the loose knobs, nuts and washers came packaged well, so I examined the components, I also removed the NE5532 and moved them, and the problem continues. When I have more free time, I will use the multimeter and the sign finder to find out where the problem is. Great acquisitions, request made and delivered 15 days later at the Post Office, compliments to the BG team for the good work. It arrived in a simple packaging with padded protecting some assorted items, and in perfect condition. After opening and photographing, it took me as it was a lot of small items in a purchase and I didn't have much time available, however, I did some tests and observations. The product that was missing in my BPA project with 4 LM3886 per channel, the modules with LM3886 I have, was missing only the preamplier. Unfortunately one channel has no sound, the other is working very well, I did a visual examination on the trails and weld points, and also on the components with a 30x Lupa and good direct lighting and retro lighting. It came well packed the mounted board and the loose knobs, nuts and washers, so I examined the components, I also removed the NE5532 and switched places, and the problem continues. When I have more time on my hands, I will use