bass and treble adjustment tube preamplifier

{"cid":"91219651","title":"Audiophile HIFI Tube Preamplifier 6J5 QCC3034 for BT 5.1 Wireless Home Amplifier with Bass and Treble Adjustment Preamp","imgUrl":"https:\/\/img.chinax.com\/nimg\/4e\/f4\/81d65483109c8dd472a5f42282ab-200x200-1.jpg","attrs":{"Minimum Order Quantity":"1","private mold":"Yes","Brand":"Original","Type":"Home Amplifier","Channel":"2 (2.0)","Place of Origin":"Guangdong, China","Material":"Metal"}}

{"cid":"91179284","title":"1987 Grand Style Hand Wired All Tube Guitar Amplifier Head 50W in Black or Brown","imgUrl":"https:\/\/img.chinax.com\/nimg\/95\/b3\/9785eb3a2d7862112cf429088890-200x200-1.jpg","attrs":{"Price":"USD; $600~750; PCS","Brand Name":"Grand","Model Number":"GT-1987HW","Minimum Order Quantity":"1pcs","Delivery Time":"10~15pcs","Certification":"CE, ROHS, FCC","Place of Origin":"China","Payment Terms":"TT, Paypal, Western Union, LC, Money Gram,DA","Supply Ability":"300pcs\/month","Packaging Details":"Double Carton Box","Cabinet Process":"Tenon combined","Cabinet Material":"18mm birch sandwich plate","Circuit Process":"Hand wired soldering point","Channel":"Overdrive(Hi)\/Clean(Low)","Adjust":"Presence, Bass, MID, Treble, High Master-Volume, Pre AMP-Volume","Tubes":"2*12A7\/ECC83; 1*12A7\/ECC83, 2*EL34","Output":"4ohm, 8ohm, 16ohm"}}