JapanEsotericErsao F-03A pure Class A combined power amplifier [New Licensed Warranty]
Both of the amplifiers are designed with a balanced design, and the power supply is not sloppy. A large 940VA EI transformer is used, and each channel is equipped with 10,000.μF×4 powerful capacitor arrays, set up in parallel dual mono mode. At the same time, three bipolar LAPT transistors are used for parallel push-pull configuration. In terms of output, the F-03A of pure class A is 30W×2 channels(8Ω)/60W×Channel 2(4Ω), And the F-05 driving force is 120W×2 channels(8Ω)/240W×2 channels(4Ω)Etc.
In other respects, F-05 and F-03A have many things in common. For example, the basic structure of both adopts a fully balanced preamplifier and dual mono setting mode, as well as the exclusive technology ESOTERIC-QVCS volume control system. The left and right channels adopt 4 sets of independent resistance ladder switching circuits for positive and negative. The volume knob also uses Grandioso''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s technology. Dual mono phono amplifier with built-in separate circuit(Support MM/MC), And using TI''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s "TPA6120A2" headphone amplifier. In terms of appearance and chassis, F-05 and F-03A also use heavy aluminum materials, and use high-quality steel insulated feet to support them in a 4-point manner. High rigidity can effectively suppress vibration.