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Sparkos Labs, Inc. Discrete op amps for amplifying audio ...
https://sparkoslabs.com/discrete-op-amps/
The SS3601 / SS3602 discrete op amps will outperform virtually all audio grade monolithic IC op amps in open loop gain, noise performance, output current, and magnitude of class A bias current. Even the coveted OPA627 monolithic op amp, with a price tag of over 25 dollars, has 30dB less gain and around twice the noise of these discrete op amps.
Discrete Opamp - Burson Audio
https://www.bursonaudio.com/about-us/discrete-circuits/
Discrete circuits are custom built by Burson for specific applications rather than an op-amp’s jack-of-all-trades-master-of-none specifications. The art of circuit design yields superior sound in every way in comparison to simple plug-a-chip engineering. A system can only sound as good as its weakest link.
Discrete Opamp - Staccato Audio
https://staccatoaudio.com/
Discrete OpAmp OSH from Staccato Audio is a new way of designing audio products. Every Operational Amplifier is treated individually. OSH was made as a replacement for most of IC's Opamp in the market. DIP8 socket is easy to plug&play for traditional opamp
Op Amps - Purple Audio
http://www.purpleaudio.com/discrete-opamps/
Discrete Op amps. Used in all of our equipment and available to upgrade other equipment. None of our op amps are potted, you should never have to trash one of these. We offer long and short pin on KDJ3 & KDJ4. We have had clients purchase 100 and replace all of the op amps in their console. Bulk pricing available. The KDJ 6. Class A input stage.
Supreme Sound Opamp V4 - Burson Audio
https://www.bursonaudio.com/products/ss-discrete-opamp-v4/
The only way to overcome IC op-amp problems is to replace them with well-designed discrete circuitry. The foundation of the Supreme Sound Op-Amp is a sophisticated voltage differential amplification network. The entire discrete op-amp is constructed with audio-grade transistors and resistors that ensure minimal coloration and maximum dynamics.
Playing at Discrete Op-Amp Design | diyAudio
https://www.diyaudio.com/community/threads/playing-at-discrete-op-amp-design.379437/
Playing at Discrete Op-Amp Design. The OP and at least one participant of this cool thread asked for details on some of my discrete op-amp designs. So a little context, these were designed for my tape amplifier project. There are 4 variants; one is yet untested, and I will share the one I am currently using in the front end in this post.
Audio Op Amps - It's The Loop Gain You Seek, Not The ...
https://sparkoslabs.com/discrete-op-amps/audio-op-amps-gain-seek-bandwidth/
A Realization: Since IC op amps use single pole compensation and therefore have a 6dB / octave gain roll off, it is possible to plot the maximum theoretical gain that could ever exist at any frequency, knowing only the bandwidth. We simply draw a line up from the unity gain bandwidth point at a 6db/octave slope, and we can see right away how much loop gain is possible at any …
Discrete OpAmps - Analog Circuit Design · Samuel Groner
http://www.nanovolt.ch/resources/discrete_opamps/
Discrete OpAmps. Designing and building discrete operational amplifiers is a fascinating business for me. Although IC technology is mature, there are still situations where discrete design beats ICs—typical advantages of discrete amplifiers are potentially high supply voltages, high maximum dissipation, much extended options with respect to choice of passive components …
Discrete Operational Amplifier - The Audio Pages (Main Index)
https://www.sound-au.com/project07.htm
Opamps such as the LM4562 are almost impossible to beat with any discrete circuit. There is nothing to indicate that an IC opamp with distortion below 0.001% will sound 'worse' than a discrete circuit. The many claims of opamp 'sound' are generally due to non-blind test methods and are mostly (but not always) false.
DIY Op Amps
https://www.passdiy.com/pdf/diyopamp.pdf
audio applications. How Op Amps Work First, a little tutorial on how op amps work. Fig. 1 shows an op amp, which has five connections to the outside world. Two of these are power supply rail pins, +V and -V, which for monolithic op amps usually want to be attached to supply voltages in the range of about 5 to 15 volts each for commercially ...
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