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Reviewed in the United States on September 2, 2023
These are definitely not TL074s. TL07xs should have a slew rate of 13v/μs, these measured with my oscilloscope to be around 0.8v/μs. That's a bit faster than spec for an LM324, which is what I suspect these actually are.They're fast enough for a lot of applications, but they will start introducing audible distortion within the audio spectrum if used for eurorack applications where they might be used over a full 24v peak-to-peak range. In quieter applications like a headphone amplifier, the slew rate is probably okay.But still, it is deceptive to label these as TL074s. They are not.
lee T.
Reviewed in the United States on July 24, 2023
Only used 1 so far, works fine
Michael G.
Reviewed in the United States on March 27, 2023
These are some sort of opamp, but they are not genuine TL074, they do not behave according to specifications. They should be pulled from the site as they can cause issues and potential damage in circuits.
eleneasy
Reviewed in the United States on November 14, 2023
The bach I received has a fake Texas Instrument logo on them. They seem to perform fine, until you use them in circuits very sensitive to the input impedance. I measured about 8Mohms, very low indeed, considering that these op-amps have JFET inputs. Furthermore, this resistance seems to be between the non-inverting input and the positive power supply pin. I guess I will continue use these components for minor experiments, in place of the 741 op-amp, maybe. But they are definitively not worth the money.
SevPay
Reviewed in the United States on October 6, 2022
They literally just don't work. Unless you want a fireworks show, one of them exploded!
Customer
Reviewed in the United States on August 18, 2021
out of 20 of these, 18 were defective showing significant voltage drop on the output. I thought I designed my circuits incorrectly until I swapped these for Texas Instruments TL074s and everything worked perfectly. I’m not sure what exactly is wrong with them but even the most simple buffer circuits output roughly 60% of their input voltage
NB
Reviewed in the United States on June 22, 2021
Most or all of these performed differently than the other TL074s on my bench. Maybe a bad batch?
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