The Well Lit Headphone Amplifier
The TWLHA is a vacuum tube amplifier suitable to drive headphones with impedance between 32 and 600 ohm.
Amplifier type: common cathode triode with output transformer
Output impedance: 32/150/600 ohm
Board size: 254mm x 197mm
Power supply: vacuum tube rectifier and LC filter
Board options: bare board only
Schematic and download