LS-37 assembled & tested
$95.00
LS-37 assembled & tested
MM/MC RIAA Phono Amp, using 4 pieces of 12AX7,input impedance of mm head is adjusttable, m/c input voltage section connect as ground grid, grounding is “STAR” ground. PP coupling capacitor,metal film and carbon film resistor
(tubes, case and power transformer not included)
You can change the input impedance from 150ohm to 2.7K, 1. input impedance 2.7kΩ： DIP 6 ON all others OFF。 2. input impedance 1.35kΩ： DIP 2、6 ON others OFF。 3. input impedance 900Ω： DIP 3、6 ON others OFF。 4. input impedance 430Ω： DIP 4、6 ON others OFF。 5. input impedance 230Ω： DIP 5、6 ON others OFF。 6. input impedance 150Ω： DIP 2、3、4、5、6 ON others OFF。 7. other input impedance： DIP 6 ON，others OFF，change the resistor 2K7 near DIP 1 to the resistor value of the MC head
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