Tubelab SPP board for sale.
Assembled, tested and working as both EL84/6BQ5 and EL86/6CW5 amps.
Complete with these exceptions:
--NO V-1 octal rectifier socket installed. I used an external regulated power supply. [And NO diodes were ever soldered to the circuit board.]
--T-1 RED 3-pin connector & T-1 YEL 2-pin connector not installed. With no rectifier installed these connectors have no use. I used the L1-2 connector to bring B+ directly into the board.
--NO R1 installed. Note the 2 high voltage wires. These go to an external high wattage resistor whose value depends on which tube set is used.
--NO C101 & C201 the optional feedback capacitors - These were never soldered in place.
NO TUBES - NO TRANSFORMER - NOTHING other than what is in the pictures.
$40 USD & shipping cost - U.S.A. priority medium flat rate box is $13.
Option to include General Electric EL86/6CW5 tubes. Set of 4 for $8 extra.
The design can be found here:
Tubelab SPP | Tubelab
Thanks for looking.
Assembled, tested and working as both EL84/6BQ5 and EL86/6CW5 amps.
Complete with these exceptions:
--NO V-1 octal rectifier socket installed. I used an external regulated power supply. [And NO diodes were ever soldered to the circuit board.]
--T-1 RED 3-pin connector & T-1 YEL 2-pin connector not installed. With no rectifier installed these connectors have no use. I used the L1-2 connector to bring B+ directly into the board.
--NO R1 installed. Note the 2 high voltage wires. These go to an external high wattage resistor whose value depends on which tube set is used.
--NO C101 & C201 the optional feedback capacitors - These were never soldered in place.
NO TUBES - NO TRANSFORMER - NOTHING other than what is in the pictures.
$40 USD & shipping cost - U.S.A. priority medium flat rate box is $13.
Option to include General Electric EL86/6CW5 tubes. Set of 4 for $8 extra.
The design can be found here:
Tubelab SPP | Tubelab




Thanks for looking.