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JFETs: The New Frontier, Part 1 | audioXpress
https://audioxpress.com/article/JFETs-The-New-Frontier-Part-1
The basic circuits on which Erno Borbely based most of his projects are described in “JFETs: The New Frontiers, Part I and II,” published in Audio Electronics AE 5/99 and 6/99. Referring to these articles frequently, the author admits, these were the “building blocks” on which many - if not all - of his amplifiers are based. This article is the first part, as originally published …
Simple JFET Audio Preamps - Ciphers By Ritter
http://www.ciphersbyritter.com/RADELECT/PREJFET/JFETPRE.HTM
The N-JFET Audio Preamp Schematic. The input transistor Q2 is an N-channel JFET. Each particular JFET sets a particular output bias voltage, so the JFET must be selected from among multiple devices for the desired bias value. Fortunately, due to the low current involved, desirable devices can come from a wide range of device types.
Audio Amplifiers - JFET - InterFET
https://www.interfet.com/audio-amplifiers/
JFETs and MOSFETs - sound-au.com
https://www.sound-au.com/articles/fet-applications.htm
However, MOSFETs can make very good audio switches if configured properly. Unfortunately, the range of available JFETs has shrunk alarmingly in the last few years. Most of the devices that were used for very low noise circuitry are no longer available, and those you can still get from major suppliers are far less useful than the 2SK170 and its ilk.
An All-JFET Amplifier: Exploring Modern JFETs Circuits ...
https://audioxpress.com/article/an-all-jfet-amplifier-exploring-modern-jfets-circuits
So, the all-JFET amplifier can be used for various audio applications. Toshiba Semiconductors manufactured many junction field-effect transistors (JFETs) for audio applications: the 2SJ74/2SK170, the 2SJ103/2SK246, and the 2SJ104/2SK364 to name a few.
Low-Noise JFETs Ð Superior Performance to Bipolars
https://www.vishay.com/docs/70599/70599.pdf
the best bipolar transistors on low-frequency noise at source impedances as low as 5 k . With higher source impedances, common in sensitive transducers, the JFET amplifiers exhibit dramatically lower noise figures. A close examination of bipolar and JFET specification and typical curves, along with circuit breadboarding, will startle most ...
Best available transistor for jfet audio switch? - Music ...
https://music-electronics-forum.com/forum/music-electronics/41946-best-available-transistor-for-jfet-audio-switch
What would the best jfet in regards to getting maximum headroom when "on" and minimum leakage when "off" be? One that is available at for example Mouser Electronics - Distributör av elektroniska komponenter The type of switch im talking about is this. Control voltage 9V, bias voltage 4.5V
Best transistor to use for audio amplifier - Electrical ...
https://electronics.stackexchange.com/questions/97827/best-transistor-to-use-for-audio-amplifier
Anyway, I would like to have an idea this early so I can plan on what transistor to use for best audio amplification. I have read some threads how the other transistor (BJT/FET) is better, but other forums say that the performance relies not on the component but on how the transistor is properly biased and how the circuit is properly designed.
OK audio gurus: What are the highly regarded FET-input …
https://www.eevblog.com/forum/projects/ok-audio-gurus-what-are-the-highly-regarded-fet-input-op-amps-these-days/
The OPA627 is mainly good for very low input bias - usually no need for this with audio. Noise and distortion wise OPA1641 or OPA827 perform better. It depends very much on the circuit if a faster OP can be used. If there are more complicated parts (especially active parts) in the FB path, a faster OP can be a problem.
Best sounding transistors - High-End Audio Discussion Forum
https://forum.audiogon.com/discussions/best-sounding-transistors
Generally speaking, a FET type transistor (like JFET or MOSFET) will typically have more of a warm/rich character. FET transistor are usually not precise and require a resistor or pot to balance for DC offset (when used in an input stage). A bipolar transistor will, typically, sound more clean and will generally have lower distortion.
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