Member Blog Posts: amplifier, headphone

Headphone Amplifier

Posted Apr 24, 2013 By Extreme Circuits

Parts:

P1 = 22K
R1 = 560R
R2 = 10K
R3 = 10K
R4 = 12K
R5 = 2.2R
R6 = 2.2R
R7 = 22R-1/2W
Q1 = BC337
Q2 = BC327
Q3 = BC337
Q4 = BC327
C1 =…

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Portable 9v Headphone Amplifier

Posted Apr 23, 2013 By Extreme Circuits

After several requests by correspondents, the decision of designing a 9V powered Headphone Amplifier was finally taken. The main requirement was to…

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Pure Class-A Headphone Amplifier

Posted Apr 22, 2013 By Extreme Circuits

400mW RMS into 32 Ohm load, Single-rail Supply – Optional Tilt Control

This design is derived from the Portable Headphone Amplifier featuring an…

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Modular Headphone Amplifier

Posted Apr 22, 2013 By Extreme Circuits

140mW into 32 Ohm loads, Ultra-low Distortion

Those wanting private listening to their music program should add this Headphone Amplifier to the…

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Headphone Amplifier Using Discrete Components

Posted Apr 21, 2013 By Extreme Circuits

An amplifier to drive low to medium impedance headphones built using discrete components.

Both halves of the circuit are identical. Both inputs…

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A Hiqh Quality Headphone Amplifier

Posted Apr 21, 2013 By Extreme Circuits

Low distortion Class-B circuitry, 6V Battery Operated

Some lovers of High Fidelity headphone listening prefer the use of battery powered…

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Portable Headphone Amplifier

Posted Apr 19, 2013 By Extreme Circuits

3V Battery powered, High Performance unit

This amplifier can be directly connected to CD players, tuners and tape recorders. It is tested with…

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Class A-Based Headphone Amplifier

Posted Feb 09, 2012 By Circuit Projects

The design of the circuit is based on the operation of a class A amplifier for the purpose of driving a pair of headphones using a mini…

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Headphone Amplifier Using IRF510 MOSFET/12AU7 Tube

Posted Feb 09, 2012 By Circuit Projects

The project is known as NP-100v12 which refers to a simple headphone amplifier built around the 12AU7 vacuum tube.

The 12AU7 is also known…

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Efficient Pocket Headphone Amplifier by OPA2227P

Posted Feb 08, 2012 By Circuit Projects

Here is a basic but really efficient pocket headphone amplifier circuit based on OPA2227P high precision and low noise operational…

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Two-Stage Hybrid MOSFET Headphone Amplifier

Posted Feb 07, 2012 By Circuit Projects

The objective of the project is to create a 2-stage hybrid headphone amplifier where the voltage stage uses a vacuum tube that feeds a…

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Headphone Amplifier Based on RC4560

Posted Feb 06, 2012 By Circuit Projects

The project is utilizing dual op-amp chip TI RC4560 along with salt water-etched PCB, while using this SMD op-amp for headphone…

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Headphone Amplifier Enclosed in CDROM Case

Posted Jan 31, 2012 By Circuit Projects

The concept of the headphone amplifier is based on a typical single-ended Class A circuit where an active constant current source (CCS) is…

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Headphone Amplifier with Optional Tilt Control

Posted Jan 31, 2012 By Circuit Projects

This circuit is a pure Class-A headphone amplifier featuring an NPN/PNP transistor pair emitter follower output stage. This push-pull…

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Battery Powered Portable Amplifier for Headphone Use

Posted Jan 31, 2012 By Circuit Projects

Part List
The circuit was…

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Portable Headphone Amplifier Known as CMoy

Posted Jan 31, 2012 By Circuit Projects

The CMoy portable headphone amplifier was designed for testing purposes while using a single OPA134 op-amp in a non-inverting…

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Simple Headphone Amplifier by BC549C

Posted Jan 26, 2012 By Circuit Projects

This headphone amplifier provides a gain of less than 10 by a single stage common emitter amplifier and then via a direct coupled emitter…

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Headphone Amplifier with IR Communication

Posted Jan 25, 2012 By Circuit Projects

This low cost project can be used to reproduce an audio from TV without creating any disturbance from other people.

No wire will be used…

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Class A-Designed Headphone Amplifier Using BC308 Transistor

Posted Jan 21, 2012 By Circuit Projects
The circuit was constructed around the functionality of a Class A amplifier to create a headphone circuit.
- BC308 – an epitaxial planar…
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TDA2004 Based Headphone Amplifier

Posted Jan 17, 2012 By Circuit Projects

The circuit aims to produce a headphone amplifier that would use a single integrated circuit TDA2004 to perform all the necessary…

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