Upgraded 6K4 Tube Preamplifier Amplifiers HiFi Tube Preamp w Power Supply; Compatible with AIYIMA

Upgraded 6K4 Tube Preamplifier Amplifiers HiFi Tube Preamp with Power Supply; Compatible with AIYIMA Product support replace tube: 6J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5 6AK5 6AU6 6BA6 6BD6 EF93 6K7 GE5654 etc. ***Tube: 6K4/6A2/6J3（The tube is disassembled)*** Size: 87*75MM ***This product is a tube pre-amplifier and needs to be connected to an active speaker or power amplifier. It cannot directly connect speakers and passive speakers, headphones, phono amplifiers, cars.*** Pre-stage magnification: voltage magnification 5 times Pre-stage frequency response: 5HZ-500KHZ Pre-level sensitivity: 3V Power supply: DC12-16V, current 1A or more. Power socket: DC3.5/5.5*2.1 Audio input: low-level signal input such as mobile phone, CD, computer, TV, MP3, etc. Audio output: connect to power amplifier or active speakers Package Includes One Amplifier per Order

• Compatible with AIYIMA
• Upgraded 6K4 Tube Preamplifier. Amplifiers HiFi Tube Preamp Includes Power Supply
• Product support replace tube: 6J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5 6AK5 6AU6 6BA6 6BD6 EF93 6K7 GE5654 etc.
• ***Tube: 6K4/6A2/6J3（The tube is disassembled)*** Size: 87*75MM
• ***This product is a tube pre-amplifier and needs to be connected to an active speaker or power amplifier. It cannot directly connect speakers and passive speakers, headphones, phono amplifiers, cars.***