DIY Analog Economical Headphone Amplifier

Thread Starter

danishsajjad

Joined Mar 30, 2017
2
Greetings Enthusiasts,


This project aims to create a simple and economical diy headphone amplifier. The amplifier consists of a tone control which can cut/boost up to 5dB. The amplifier’s gain is set to 3dB to ramp up the volume a bit.


It’s my first project and am looking forward to suggestions, critics and improvements. I have attached the SPICE Simulations results and the final schematic. Some of you might argue I have simulated a TL072 OP Amp instead of the TDA1308 amplifier IC. Well, I couldn’t find a Spice directive for TDA1308 compatible with LTSPICE. I have trouble understanding PSPICE. Given that, a part of this project depends on assumptions which is why am looking forward to your advice before fabrication.


Cheers!!
 

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Thread Starter

danishsajjad

Joined Mar 30, 2017
2
@Alec_t I restricted it to 3dB because most of the signal will be attenuated by the tone control. The TDA1308 IC can only take a maximum of +-4V on its supply. It can not handle intensities higher than 6dB (ideally). If I max the volume and tone controls, it will clip the audio signal resulting in distortion.
 
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