Music Technology
RC4560-based headphone amplifier

rc4560Amp.jpg
This SMD op-amp project uses the TI RC-4560 dual op-amp chip and a salt water-etched PCB. The builder got the op-amp as a free sample from Texas Instruments and scavenged all of the SMD resistors from old hard drive electronics. The results are not pretty, but they’re functional. The circuit used (with some changes) is the Chu Moy design found here. The CMoy circuit is not SMD.

Op-amp headphone amplifier – Link

Related:

  • In-line headphone amp – Link
  • MAX – headphone amp – Link
  • Altoids headphone amp – Link.
  • AVR based headphone amp – Link
  • Altoids and tin cases Archives – Link

From the pages of MAKE:
Make 656

Mint-Tin Amp. MAKE 04 page 131. Pocket amplifier punches up headphones. Subscribers–read this article now in your digital edition or get MAKE 04 @ the Maker store.

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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

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