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Ultra-low Distortion Class-A Amplifier
https://www.sound-au.com/tcaas/nj10w.pdf
Ultra-low Distortion Class-A Amplifier A design using feedback to control the gain and the levels of voltage and current in the output stage By L. Nelson-Jones, M.I.E.R.E. There is in the design to be described nothing very revolutionary, but rather an attempt to get a little nearer to perfection, in the power amplifier section of an audio system.
Ultralow Distortion Audio Panpot Amplifier | Analog Devices
https://www.analog.com/en/analog-dialogue/articles/ultralow-distortion-panpot-amplifier.html
Low cost and low distortion are important considerations for audio circuits. The AD8273 1 dual low-distortion difference amplifier uses internal gain setting resistors to ensure excellent matching between the two channels. With no external components, each channel is configured as two high-performance amplifiers with a gain of 3. In the audio frequency range, the total …
Ultra low distortion composite amplifier kits TDA7293 TDA794
https://www.kaltecs.com/tda7293-composite-amplifier/
To ensure low distortion and low noise floor U1 needs to be a high performance op amp. Figure 3 shows THD + noise plots vs output power. The PSU is identical to that used with LM1875 composite amplifier but the output voltage is ±33.5V. TDA7293 TDA7294 composite amplifier distortion vs output power
Ultra Low Distortion Audio Composite Amplifier Kit LM1875
https://www.kaltecs.com/lm1875-composite-amplifier/
Ultra Low Distortion Composite amplifiers based on LM1875. LM1875 is a little nice chip amp capable of providing 25W output power. If properly implemented it provides surprisingly good sound. The simplicity of the circuit and its sound quality have ranked that IC chip among the most popular among DIY enthusiasts.
OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, …
https://www.ti.com/lit/ds/symlink/opa1656.pdf
OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers 1 Features • Ultra-low noise: – Voltage noise: 2.9 nV/√Hz at 10 kHz – Current noise: 6 fA/√Hz at 1 kHz • Low distortion: – 0.000029% (–131 dB) at 1 kHz – 0.000035% (–129 dB) at 20 kHz • High open-loop gain: 150 dB • High output current: 100 mA • Low input bias current: 10 pA
4QD-TEC: Low distortion Audio amplifier
https://www.4qdtec.com/pwramp.html
Low distortion audio amplifier This is an unusual circuit for an ultra-low distortion power amp. According to my original notes the circuit is dated January 1977 so the circuit is not exactly modern but it is still sufficiently different to be interesting.
Ultra Low Distortion Composite Amplifiers Based on TDA7293 ...
https://www.diyaudio.com/community/threads/ultra-low-distortion-composite-amplifiers-based-on-tda7293-94.379506/
Ultra Low Distortion Composite amplifiers based on TDA7293/94 Q: Can I draw more power from the composite amp? A:TDA7293 is a very versatile IC chip. According to the data sheet it is able to provide 100W output power and the supply voltage can be as high as ±50.0V. I never pushed the chip till such extremes.
Ultra low distortion amp | diyAudio
https://www.diyaudio.com/community/threads/ultra-low-distortion-amp.116881/
Along with blueprints and cross-over's for some awesome ultra-linear speakers. Never heard anything like 'em. Now I need an amplifier to match the speakers. Anything else would be a shame I've been searching mostly for ultra-low distortion schematic's, regardless of the output power (though about 100W would be the preffered amount.)
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