1. EL34 SE Tube Amplifier Kit (Stereo)
2. HV400D BJT Variable HV Regulator Kit
3. Assembly Manual
INTRODUCTION
This EL34 SE V amplifier employs common pentode EL34 vacuum tubes for the class A amplification with 6SN7 / 6SL7 as the input stage. The 6SN7 tubes are configured as two cascading stages, the common-cathode and cathode follower, respectively. The output power can reach 10W for each channel. The B+ power and two filament voltages are supplied by the HV400D variable BJT voltage regulator kit that produce clean and fast driving current to the amplifier.
FEATURES
· Tubes: EL34 x2 and 6SN7 / 6SL7 x2.
· Input sensitivity: 1.4V@10W
· Input impedance: 270K Ohms
· Output impedance: 4, 8 Ohms
· Output power can reach 10W for each channel.
· Use with the HV400D voltage regulator board with built-in rectifier and LC noise filtering circuitry.
· Symmetrical layout design in signal paths for both channels.
· Dedicated ground and power rails layout design.
· Two large reservoir decoupling capacitors for power rails.
· Power requirements: two 280V AC (100mA) and two 6.3V AC (1.5A)
· PCB dimension: 130mm (W) x 165mm (L)
· PCB thickness: 2.4mm, double layer, 2oz copper.