Reisong tube amplifier Boyuurange audio

BoyuuRange A-50 MKIII 300B Single-ended Class A Vacuum Tube Intergrated Amplifier Factory add an Inductance transformer and Bipolar filter circuit to get the nicer sound for the MKIII. The Prices of raw materials copper, iron and aluminum increase by 20% to 60% these months in 2020. The USD to RMB exchange rate get bad too. We list this price $526.59 USD on May 20, 1 USD= 7.1 USD on May 20, Now 1 USD=6.5 RMB about. We want to sell the lowest price, but the Prices of raw materials is crazy. The Prices of raw materials copper, iron and aluminum increase by 20% to 60% in these months in 2020....

Boyuu A10 EL34B tube amp Single-end Class A HiFi audio amplifier tube 5Z4P Rectified Brand New Opened box&Ship to USA only(returned goods checked like new) is ONLY for Version: Ver B: welding by hand upgrade version Come with Tube cage cover 115V and Power tubes EL34 brand PSVANE or Shuguang random. The Prices of raw materials copper, iron and aluminum increase by 20% to 60% these months in 2020. The USD to RMB exchange rate get bad too. We want to sell the lowest price, but the Prices of raw materials is crazy. Factory get no gross margin for this price, if Calculation of net profit, Factroy...

Boyuu A30 2A3 Tube Singel-end Class A Integrated Amplifier Hi-fi audio Brand New This item have a very loud humming when it don't play music.You can hear the humming 3 meters far away.But some senior audiophile can accept it becuase the sound is nice when play music.Why so loud humming? because it is AC for filament-type.The DC for filament-type will get less humming, but the sound is not good enough, Factroy don't use DC for this version . Usually, the new tube members are not easy to understand and accept so loud humming. Declaration Specification: Power Transformer: New imported...

BPrice difference for the order sometimes, the order need to add some thing or change something, just need to make an new order here Like add $14 USD, it need to make an order 14 items. If the pirce mantissa is less than $0.79 USD, don't need to pay for the mantissa, like $14.79 USD, just need to pay for $14 USD. If the pirce mantissa is more than $0.80 USD, it needs to make the mantissa to $1 USD, like $14.80 USD, it needs to pay for $15 USD. Declaration

Boyuu REISONG 1:2 passive Audio input transformer for Phone/PC/MP3 Player to get hifi sound 100% Brand new Declaration Boyuu REISONG 1:2 passive Audio input transformerS Feature: REISONG 1:2 step-up transformer is a passive step-up transformer developed to compensate for the low output of audio signals from computers, mobile phones and MP3 players in the existing market. When using a computer, mobile phone and MP3 PLAYER to listen to music with hifi amplifier, generally find the sound is small, less details, dynamic and thin. Without a CD player, the decoder sounds full, because...

Boyuurgang Reisong A2 Class A Single-ended EL84/6P14 vacuum tube integrated amplifier Hi-Fi 100% Brand new Declaration Specifications Input sensitivity: 550mV Output power: 2 * 2.5 W Signal to noise ratio: 84dB Input impedance: 100KΩ Output impedance: 4,8 ohm Input voltage: 220V / 50Hz Power consumption: 45 W Frequency response: 38Hz-36KHz Vacuum tube: 12AX7x1, 6P14 / EL84x2 Dimension: 220W x 188D x 136H mm Net weight: 3.6 KG Packaging Dimension: 330L x 278W x 225H Package weight: 4.5KG Power supply: 100V-240V 50Hz/60Hz Input jack: CD / PC Features:  High-quality wide-frequency s...

Boyuu A9 EL34 Single-ended Pure Class A Finished tube amplifier or Hi-Fi DIY Kit This is kit and need you solder it by yourself, it's very suitable for love DIY hifi friends. You must be good at DIY tube amp. If you are an entry-level DIYer, please don't buy the KIT. The KIT's price is included the KIT and a circuit diagram only. The service charge is not included, service charge cost very very high because we are not good at DIY, sorry for this. Some of my buyers ask a DIY KIT, so, we list one to test. If you need a DIY KIT, choose Ver A. If you want the finished tube amplifier, choose Ver...