AVT1024 A

Description

Listening to music through headphones can be a source of many great aesthetic experiences, provided, however, that the amplifier is of sufficient quality. Therefore, we propose to make a headphone amplifier characterized by very good parameters despite the uncomplicated construction. The two-channel power amplifier bases its construction on the TDA7233 amplifier. For the correct operation, a minimum number of elements is required, which makes the project very simple. To the stereo minijack output connector we connect magnetodynamic headphones with an impedance greater than 2 ohms. The best results are achieved with headphones with impedance of 32 ohms / channel.

Recommendations: the device is especially recommended for enthusiasts of good sound, music lovers and musicians

Selected parameters:

• Power amplifier operating class: AB
• Output power (Rl = 32 ohms, Ucc = 12V): 800 mW
• Nonlinear distortion: less than 0.3%
• Frequency response 17 Hz ... 23 kHz
• Input impedance: 90 cells
• Permissible voltage range: 1.8 ... 15V AC or DC
• Power consumption at rest (per channel): approx. 6 mA
• The printed circuit board and documentation are included
  A version with a set of components for self-assembly is available
  A detailed description in EP 10/94