Signal to noise ratio: 99dB. Dimensions: 1611.57 cm (including tube height). Power supply: universal DC 19V 4.7A.3 6J2 tube (one spare tube). There is a large probability that the low-quality audio cable causes the static noise. Please make sure the sound source is fine since tube amplifiers will amplify all sound including the noise.
Please check whether the tubes are plugged well on the tube sockets or not. Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
We will be very glad to help you and try our best to make you satisfied. Vacuum tube power amplifier with Bluetooth, 3.5mm jack and Stereo L/R RCA input. Power amplifier uses TPA3116 as the core chip, 1.2MHZ modulation frequency, high-power output distortion of less than 0.1% (10W), up to 50W + 50W dual-channel output power.
Easily switching between different sound sources with its audio input selection. Treble & bass adjustment; Sound is warm and broad; No background noise; Gold-plated for input and output terminals; 6J2 valve tube; Mini size suitable for desktop. This item is in the category "Sound & Vision\Home Audio & HiFi Separates\Amplifiers & Pre-Amps".The seller is "millionaire--smile" and is located in this country: GB. This item can be shipped to United Kingdom, Antigua and Barbuda, Austria, Belgium, Bulgaria, Croatia, Republic of, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Australia, United States, Bahrain, Canada, Brazil, Japan, New Zealand, China, Israel, Hong Kong, Norway, Indonesia, Malaysia, Mexico, Singapore, Korea, South, Switzerland, Taiwan, Thailand, Bangladesh, Belize, Bermuda, Bolivia, Barbados, Brunei Darussalam, Cayman Islands, Dominica, Ecuador, Egypt, Guernsey, Gibraltar, Guadeloupe, Grenada, French Guiana, Iceland, Jersey, Jordan, Cambodia, Saint Kitts-Nevis, Saint Lucia, Liechtenstein, Sri Lanka, Macau, Monaco, Maldives, Montserrat, Martinique, Nicaragua, Oman, Pakistan, Peru, Paraguay, Reunion, Turks and Caicos Islands, Aruba, Saudi Arabia, South Africa, United Arab Emirates, Chile, Bahamas, Colombia, Costa Rica, Dominican Republic, Guatemala, Honduras, Jamaica, Kuwait, Panama, Philippines, Qatar, El Salvador, Trinidad and Tobago, Uruguay, Vietnam.