Nobsound Mini Bluetooth Power Amplifier Stereo Hi-Fi Digital Amp 2.0 Channel 50W×2 with AUX/USB/Bluetooth Input Wireless Audio Receiver PC Sound Card with Power Supply (Black)

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Nobsound Mini Bluetooth Power Amplifier Stereo Hi-Fi Digital Amp 2.0 Channel 50W×2 with AUX/USB/Bluetooth Input Wireless Audio Receiver PC Sound Card with Power Supply (Black)

Nobsound Mini Bluetooth Power Amplifier Stereo Hi-Fi Digital Amp 2.0 Channel 50W×2 with AUX/USB/Bluetooth Input Wireless Audio Receiver PC Sound Card with Power Supply (Black)

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On topic, I've also heard some excellent sounding Chinese gear like Ming-Da and Line Magnetic (have an LM dac myself) and have built gear using affordable (not cheap) Chinese line transformers, plate chokes etc. Where does the signal on the cathode 6n1p and on the cathode and anode 6p15p comes from, if the signal comes on the 6n1p grid only when tubes are removed? C: An early production unit may have been designed with a swap and a (siltently) revised PCB has been used after the manufacturer found out. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. Just check out Audio Space, Cayin, Prima Luna, Consonance, Mingda, Doge and Line Magnetic are all excellent.

The second picture shows the measured output signal with no speaker load attached while streaming silence. However, in this case it is safe to assume that the actual distortion that occurs inside the speaker will be magnitudes higher than the specs shown on the Nobsound data sheet since it is lacking the output filter. When manufacturers measure amplifier dirtortion they usually measure distortion by adding a low-pass filter after the Class-D amplifier. First of all, every speaker handles high-frequency signals differently since a speaker is designed to be driven with signals at frequencies below 25 kHz.Filterless Class-D amps for the above reasons are usually only used in amplifiers of less than 5 Watts and also designs where the amplifier is mounted directly onto the speaker to avoid EMI issues. One is a passive 2in1 RCA switchbox with volume control which bleeds the two inputs and is thus unusable. Those of us at the coal-face (techs, engineers, etc) have a very healthy disrespect for Chinese made products. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. I have also enclosed a picture of the output waveform with a 4 Ohm load connected to one of the outputs when driving the amplifier with a sine signal.

I can understand them skimping on transformers which are costly devices, but the rest of the chassis is full of circuit boards, so why not just make a proper valve amp out of it to begin with? It warns that not having this output filter could damage the speaker voice coil and also the EMI could have negative impacts on nearby devices. AUX mode has slightly better sound but I find myself connecting mostly with Bluetooth because it's so convenient. The audio is detailed and transparent and quite revealing that my Mordaunt Short MS15 speakers, although lacking a bit of bas. Read more about the condition New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is applicable).Read more My first unit had a problem with the AUX section and the seller sent a new one immediately.

From my experience any decent vintage amp/receiver from 70s is much much better then any Chinese class D amplifier. There was reported that Russian tubes sound much better, and the tubes with golden grids make the best sound.Me and others were not so lucky, I can only conclude there is very little quality checking on these. I would not recommend this product if you want to keep your speakers safe and avoid having massive EMI issues.

These kits have been put together after many hours of listening tests to confirm the valves performance in any given application. Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Antigua and Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan Republic, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, British Virgin Islands, Brunei Darussalam, Bulgaria, Burkina Faso, Burma, Burundi, Cambodia, Cameroon, Canada, Cape Verde Islands, Cayman Islands, Central African Republic, Chad, Chile, China, Colombia, Comoros, Cook Islands, Costa Rica, Cyprus, Czech Republic, Côte d'Ivoire (Ivory Coast), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Ethiopia, Falkland Islands (Islas Malvinas), Fiji, Finland, France, French Guiana, French Polynesia, French Polynesia, Gabon Republic, Gambia, Georgia, Germany, Ghana, Gibraltar, Greece, Greenland, Grenada, Guadeloupe, Guam, Guatemala, Guernsey, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Hong Kong, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jersey, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Macau, Macedonia, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Martinique, Mauritania, Mauritius, Mayotte, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Montserrat, Morocco, Mozambique, Namibia, Nauru, Nepal, Netherlands, Netherlands Antilles, New Caledonia, New Zealand, Nicaragua, Niger, Nigeria, Niue, North Korea, Norway, Oman, Packstation, Pakistan, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Puerto Rico, Qatar, Republic of Croatia, Republic of Cuba, Republic of the Congo, Reunion, Romania, Russian Federation, Rwanda, Saint Helena, Saint Kitts-Nevis, Saint Lucia, Saint Pierre and Miquelon, Saint Vincent and the Grenadines, San Marino, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, Spain, Sri Lanka, Sudan, Suriname, Svalbard and Jan Mayen, Swaziland, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Turks and Caicos Islands, Tuvalu, Uganda, Ukraine, United Arab Emirates, United States, Uruguay, Uzbekistan, Vanuatu, Vatican City State, Venezuela, Vietnam, Virgin Islands (U. Reddit and its partners use cookies and similar technologies to provide you with a better experience.

The fact is that most speakers will exhibit fairly high eddy losses at those switching frequencies used by Class-D amplifiers. When I brought this to their attention, they sent me a new faceplate with "Nobsound" on it but no "E-600.

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