Other Parts Discussed in Post: OPA1622 This post is co-authored by John Caldwell .
In the first post in our “Amp up your cans” blog series , my colleague John Caldwell and I used a nominal value of headphone impedance to calculate the output…
Great point Neil, since most modern headphones are extremely efficient, the amplifier may operate the vast majority of the time in the crossover region, leading to all sorts of high-order harmonics. There seems to be the same perception in headphone amplifiers…
I've been in the hi end audio design business for most of my life. This is a solution to something that ain't broke.
A good quality audio pot worked beautifully for many years and still does. No one complains about the lack of a perfect log response…
One thing that never seems to change is that technology continues to evolve. There is always the next big thing. When I think about traditional TVs, I wonder, what’s next? Everyone wants a big screen TV but when do they become so big that they are not…
Hello George,
Thank you for taking the time to read and comment on this post, and I appreciate your perspective as someone with years of experience in the high-end audio industry.
You may be correct that "no one complains about the lack of a perfect log…
Other Parts Discussed in Post: INA134 Monolithic difference amplifiers are integrated circuits that incorporate an operational amplifier (op amp) and four or more precision resistors in the same package. They are incredibly useful building blocks for analog…
“Hey! Turn it down!”
You’ve probably heard these words at some point, especially if you’re like me and enjoy listening to music LOUD ! If you decide to oblige and actually “turn it down” then what must you do? Reach for the volume…
Other Parts Discussed in Post: OPA1688 , OPA1622 This post is co-authored by Bharath Vasan .
In part three of this five-part blog series , we introduced a simple control-loop model for distortion in an operational amplifier (op amp), repeated here in Figure…
I think it is important to clarify at which frequencies this effect matters. I know it is important for high frequency circuits (e.g. radio circuits and high speed data buses) and when considering electromagnetic emissions (for CE/FCC compatibility tests…
Thank you for this article. I never wasted a thought on how R/R is accomplished. And on large signal, it usually is a don't care anyway. But for audio use, teh dual input stage can create even audible artifacts, depending on signal composition. On my…