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Headphone/Headset Circuits
 

Last Updated: December 25, 2017 01:43 PM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

"NuHybrid" headphone amp -  A low-voltage hybrid headphone amp using the Korg Nutube 6P1 __ Designed by Pete Millett

1.5V Headphone Amplifier -  This circuit stabilizes the quiescent voltage across the speaker at the exact level necessary to get the desired maximum available volume at minimum battery draw.  This more than doubles the battery life compared to just connecting a simple resistor betwee __ Designed by Andrew R. Morris

Atmega48/88/168 Development Board -  This is versatile development board for AVR microcontrollers ATmega48/88/168.  It is good for testing and debugging embedded programs.  It has many built-in peripheries connected to microcontroller __ Designed by Radio LocMan

Bluetooth Headset Hack -  DIY streaming stereo project. __ Contact: Jameco Electronics

Build a Stereo Headphone Amplifier -  It's based on a single IC and can be used with RIAA   (turntable) preamp described in our March 2002 issue   (or anything else) __ SiliconChip

CMoy Headphone Amplifier -  CMoy is very simple portable headphone amplifier.  The amplifier was originally posted by Chu Moy on headwize.  com.  The best source of information about this amplifier is article How to Build the CMoy Pocket Amplifier.  If you use Google, you will find many pages and pictures about CMoy.  Few months ago I decided built this amplifier also.  In my post you can find my experience with creating this simple but very good amplifier. 

DoZ Headphone Amplifier -  The DoZ is ideally suited to headphone use.  Revision-A boards now shipping __ Designed by Rod Elliott  ESP

HeadBanger Headphone Amp Construction Kit -  After the euphoria over receiving my new Sony Minidisc bundle had partially subsided, I noticed that the portable unit, the MZ-E40, has a rather weak output.  Measurements showed that it can only manage 80mV rms output and only about 74dB SPL output from the phones.  This is when recording at average level with 8dB of headroom.  In contrast __ Designed by Stephen H. Lafferty

Headphone Adaptor -  A simple adaptor to provide a headphone output to an existing power amplifier __ Designed by Rod Elliott  ESP

Headphone Amplifier -  In the fall of 2001, I have built one of the Stor designs: a single-ended class A headphone amplifier with only three transistors per channel: one BC109 (voltage amplifier with local negative feedback) and two 2N3055s (modulated current source).  At first, I thought that this circuit could hardly sound good.  However, simulations indicated low THD.  Moreover, the harmonic spectrum was nice: mainly second and relatively few and weak higher-order components.  A tube-like spectrum, in my opinion a good thing ! This encouraged me to give the circuit a try __ Designed by Aren van Waarde

Headphone Amplifier -  Can be directly connected to CD players, tuners and tape recorders. __ Contact: Flavio Dellepiane, fladello @ tin.it

Headphone Amplifier -  An amplifier to drive low to medium impedance headphones built using discrete components __ Designed by Andy Collison

Headphone driving for soundcards -  Computer soundcards typically have line level and speaker level outputs.  Neither of those is usually nott very suitable for driving headphones: If you connect the headphones to the line level output you will usally loose tha bass frequencies because of small coupling capacitors.  Line output circuitry might be overloaded because of too low input impedance and this can cause distortion __ Designed by Tomi Engdahl

Headphone Monitor Amp -  Computer soundcards typically have line level and speaker level outputs.  Neither of those is usually nott very suitable for driving headphones: If you connect the headphones to the line level output you will usally loose tha bass frequencies because of small coupling capacitors.  Line output circuitry might be overloaded because of too low input impedance and this can cause distortion __ Designed by John Simonton

Hi-Fi Headphone Amp The intention is to permanently insert the headphone amp between pre and power amps, although it can be used as a stand-alone item.  The input relay is operated by auxiliary contacts on the headphone sockets through a transistor driver (with a small delay) so as to mute the power amp input when listening on headphones __ Designed by Rod Elliott  ESP

Hi-Fi Headphone Amplifier -  The intention is to permanently insert the headphone amp between pre and power amps, although it can be used as a stand-alone item.  The input relay is operated by auxiliary contacts on the headphone sockets through a transistor driver (with a small delay) so as to mute the power amp input when listening on headphones. __ Designed by Richard Crowley

Hi-Fi Headphone Amplifier -  Can be directly connected to CD players, tuners and tape recorders.  * Tested with several headphone models of different impedance: 32, 100, 245, 300, 600 & 2000 Ohm.  * Old 8 Ohm impedance headphones can be also driven, but these obsolete devices are not recommended.  * Schematic shows left channel and power supply (common to both channels).  * Numbers in parentheses show IC1 right channel pin connections.  * A correct grounding is very important to eliminate hum and ground loops.  Connect to the same point the ground sides of J1, P1, C2, C3 & C4.  Then connect separately the input and output grounds to the power supply ground. __ Designed by Richard Crowley

High-Performance Stereo Headphone Amplifier, Pt.1 -  If you can't afford a high-performance amplifier and loudspeakers, you can still have the best possible hifi sound, with this headphone amplifier and a set of high-quality headphones. __ SiliconChip

High-Performance Stereo Headphone Amplifier, Pt.2 -  Last month we introduced our new Hifi Headphone Amplifier which features very low distortion and noise.  It can even drive efficient 8-ohm speakers.  This month, we show you how to build and test it. __ SiliconChip

I.R. Headphone SystE - M -  The 555 forms on oscillator generating pulses at a frequency of about 100kHz.  Pin 5 on the 555 is the "control voltage" pin.  A voltage applied to this pin will vary the frequency of the oscillations.  If the input is an audio frequency alternating voltage, it will modulate the frequency of the oscillator.  We therefore have a frequency modulated (f.  m.) infra-red beam. __ Designed by David Hoult

Infrared Audio Headphone Link for TV -  Do you have trouble understanding what's being said on the TV? Do you need the volume cranked up too loud for everyone else? Do you have a hearing aid as well? If you said yes to any other these questions, here is your answer: an infrared transmitter and receiver to let you listen to the TV sound via headphones.  That way, you can listen as loudly as you like, without disturbing anyone else. __ SiliconChip

Portable Headphone Amp -  Another contributed circuit, this is a complete portable headphone amp that features crossfeed. __ Designed by Rod Elliott  ESP

Portable Headphone Amplifier -  3V Battery powered High Performance unit __ Contact: Flavio Dellepiane, fladello @ tin.it

Portable Headphone Amplifier for MP3 Players -  Fixing Transformer Buzz In The Class-A Amplifier __ SiliconChip

Spatial Distortion Reduction Headphone Amp -  The schematic in Figure IV is a prototype circuit that implements the required frequency and crossfeed contouring.  As a development objective, the low and high frequency contouring and crossfed control elements must not interact-they must be independently adjustable __ Designed by John Conover

Stereo Headphone Amplifier -  This is an improved version of headphone amplifier I've built many years ago.  I wanted so much to share it with you because this simple circuit has done a great service

Studio Series Stereo Headphone Amplifier -  A top-class unit for the audio enthusiast! __ SiliconChip

Telephone FM Transmitter -  This FM transmitter attaches in series to one of your phone lines.  When there is a signal on the line (that is, when you pick up the handset) the circuit will transmit the conversation.  In particular it will radiate from the phone line itself.  It is a passive device, there is __ Designed by Electronics DIY

Telephone Headset Adaptor -  Keep your hands free with this simple low-cost project.  It can be used with any phone that uses RJ11 modular plugs and sockets. __ SiliconChip

Telephone Headset Amplifier -  This circuit goes between a telephone and a headset.  The project has a headset cord and plug (cut from a cheap cell phone headset) on the input and a suitable jack on the output.  The speaker signal passes through this circuit, but the microphone signal is __ Designed by Andrew R. Morris

Two-Way Stereo Headphone Adaptor -  Do you have a stereo amplifier without a headphone socket but want to listen to your music via headphones? If so, this versatile Stereo Headphone Adaptor will do the job.  It connects between your amplifier and loudspeakers, has several operating modes and features two output sockets with individual volume controls. __ SiliconChip

Wireless IR Headphone RX-TX CD4 046 -  Schematic only __ Designed by va3iul


Head Phone/ Head Set Circuits


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