Get started learning to build your own electronics by following our FREE online courses below!
Learn More »
Categories
- analog (113)
- animatronics (12)
- apple (11)
- arduino (179)
- art (41)
- articles (121)
- artificial intelligence (11)
- automation (421)
- avr (205)
- bitcoin (3)
- breadboard (9)
- cameras (57)
- cars (26)
- cell phones (28)
- clothing mods (21)
- console mods (26)
- dangerous (94)
- desktop mods (24)
- embedded (5)
- flying things (54)
- fpga (22)
- gaming creations (108)
- interface (225)
- internet (17)
- laptop mods (6)
- lasers (22)
- linux (7)
- magnetic (3)
- medical (12)
- microcontrollers (51)
- misc projects (152)
- msp (12)
- music (124)
- pic (90)
- projects (23)
- pyroedu (76)
- raspberry pi (26)
- robots (312)
- security (36)
- sensors (307)
- software (200)
- solar (19)
- stamp (9)
- tools (149)
- tutorials (98)
- Uncategorized (12)
- usb (44)
- wireless (256)
Sponsors
Build Like A Pyro!
Find many of the parts used on this site at our favorite online electronics shop
Real vs. Fake Audiophile Op-Amps: OPA627
Posted January 29, 2018 by Chris
"Walking around ebay I noticed insanely cheap OPA627’s. It’s rather old, popular and high-quality opamps, often used in audiophile gear. Manufacturer (Texas Instruments / Burr Brown) sells them 16-80$ each while on ebay it’s cost was 2.7$, shipping included. Obviously, something fishy was going on. I ordered one, and for comparison – older one in metal can package, apparently desoldered from some equipment. Let’s see if there is any difference."
3 Responses to “Real vs. Fake Audiophile Op-Amps: OPA627”
Leave a Reply
Currently Hot
Arduino Servo Motor Controller
control a servo motor using an arduino uno
An Arduino Outputting VGA Signals
output some basic vga using an arduino uno
Super Simple Arduino Tachometer
build an arduino tachometer and measure rpms
Arduino 16×2 LCD Interface
display characters on an lcd using your arduino
DE0-Nano FPGA Tilt Sensing
use the de0-nano board to sense tilt and acceleration
Animatronics
Recent Articles
Arduino DDS Shield
build your own arduino based analog signal generator
A Digital Multimeter In Review (Tenma 72-7735)
learn about your typical digital multimeter in review
The PIC Annoy PCB
build something to annoy your co-workers
Automate Your Life With Cron
learn how to use cron for computer automation
Web Scraping For Weather Updates
learn how to use php to scrape the web
Creating A Web Server In Linux
learn how to make a lamp web server in linux
Stepper Motor Control With A stepRocker TMCM-1110
learn how a commercial stepper motor controller works
Arduino To PIC Wireless Proximity Motor Control
control a motor with a distance sensor wirelessly
PIC to Arduino Wireless Communication via XBee
use xbee to make a pic wirelessly talk to an arduino
Motor Control via Infrared Distance Sensor
control a motor simply by waving your hand
June 28th, 2018 at 8:58 am
thanks you admin 🙂
August 2nd, 2019 at 2:38 am
In-depth articles, I understand it’s harder but I have a lot of research
October 20th, 2019 at 7:41 pm
Thank you for sharing this great post, I am very impressed with your post, the information given is very meticulous and understandable. I will regularly follow your next post.