AMPTATA AUDIO AMPTATA company has been engaged in the audio amplifier industry for 25 years in china We have chosen to open a store on eBay for six years Our company is engaged in the vacuum tube power amplifier and the tube socker adapter/converter's design research and development and sales If you need a large number of goods.Please contact us. We accept customer's own designs and OEM design orders Thanks for your support and cooperation We will continue to improve service quality and enhance product quality