| производитель | номер детали | датащи | подробное описание детали |
 National Semiconductor ... | LM4922 |  1Mb/21P | Ground-Referenced, Ultra Low Noise, Fixed Gain, 80mW Stereo Headphone Amplifier |
| LM4922TL |  1Mb/21P | Ground-Referenced, Ultra Low Noise, Fixed Gain, 80mW Stereo Headphone Amplifier |
 National Semiconductor ... | LM4920 |  1Mb/17P | Ground-Referenced, Ultra Low Noise, Fixed Gain, 80mW Stereo Headphone Amplifier |
| LM49200 |  960Kb/26P | Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier |
 National Semiconductor ... | LM49200TL |  960Kb/26P | Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier |
 National Semiconductor ... | LM49200TLX |  960Kb/26P | Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier |
 National Semiconductor ... | LM4921 |  849Kb/18P | Low Voltage I2S 16-Bit Stereo DAC with Stereo Headphone Power Amplifiers and Volume Control |