(x-posting from a few other sites)
EL84 Push-Pull amplifier with premium parts.
I built this amp as an end-game EL84 amp for myself but have power-hungry speakers that require more power so would rather sell it to someone that can enjoy it.
It is built using the Tubelab Simple Push-Pull PCB, with high quality parts such as a Hammond power transformer and choke, and custom made Sowter transformers with 25% UL tap which is optimal for EL84.
Solen PP film and foil coupling caps, Furutech input RCA jacks and Tellurium copper binding jacks.
All tube sockets (6x 9-pin, 1-8 pin for rectifier) are high-cost, Japanese made Amtrans ceramic.
Chassis is 3mm aluminum, CNC milled, powder coated and laser engraved by Landfall systems.
Output power is clean up to 10W.
I measured the amp with ARTA software and it is flat all the way down to 20Hz.
It has switchable 4/8 ohms, but uses full bandwidth of the transformer in both cases due to the 4 secondaries that is standard on the Sowter transformers which leads to great bass.
It has a single input with no volume control so is intended to be used as a power amp with an external preamp.
Asking $1200 + flat $30 shipping, which is below the cost of parts.
NOTE: This amp does not include tubes. I can include a premium, top-of-the line tube set, fully matched with a curve tracer at an additional (reasonable) cost.
EL84 Push-Pull amplifier with premium parts.
I built this amp as an end-game EL84 amp for myself but have power-hungry speakers that require more power so would rather sell it to someone that can enjoy it.
It is built using the Tubelab Simple Push-Pull PCB, with high quality parts such as a Hammond power transformer and choke, and custom made Sowter transformers with 25% UL tap which is optimal for EL84.
Solen PP film and foil coupling caps, Furutech input RCA jacks and Tellurium copper binding jacks.
All tube sockets (6x 9-pin, 1-8 pin for rectifier) are high-cost, Japanese made Amtrans ceramic.
Chassis is 3mm aluminum, CNC milled, powder coated and laser engraved by Landfall systems.
Output power is clean up to 10W.
I measured the amp with ARTA software and it is flat all the way down to 20Hz.
It has switchable 4/8 ohms, but uses full bandwidth of the transformer in both cases due to the 4 secondaries that is standard on the Sowter transformers which leads to great bass.
It has a single input with no volume control so is intended to be used as a power amp with an external preamp.
Asking $1200 + flat $30 shipping, which is below the cost of parts.
NOTE: This amp does not include tubes. I can include a premium, top-of-the line tube set, fully matched with a curve tracer at an additional (reasonable) cost.
