AC 12V 1A 6J1 Value Preamp Tube Preamp Amplifier Board PreAmplifier Module Pre-Amp Headphone Preamp Bile Buffer DIY Kits Stereo Bass HIFI X10-D

Features: 1. Type: 6j1 tube 2. Power input : AC 12V 1A, 5.5*2.5 plug 3. Channle :2.0 / stereo 4. Potentiometer Role: Volume adjustment + Power Switch 5. Size: 77 x 75 x 52mm Note: This is DIY Kits, an