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30 sty 2004 · The LME49720 output stage is optimized for supply voltages under +-17 volts. The LME49860 is optimized for +-14.5 to 22 volts. The LM4562 is similar to the LME49720 except it's in a metal case and has better heat dissipation and drives 600 ohms effortlessly.
19 maj 2017 · By most standards the LM4562 is a superior op-amp to the NE5532. I'm still (perhaps irrationally) fond of the OPA604, maybe because some equipment I really like used it. That's a FET input op-amp though.
23 lut 2019 · pma said: AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option. I received my A07 yesterday, on January 6, 2021, shipped from Italy. Purchased at Amazon.de and as stated on their website, it arrived without a power supply. I am testing the A07 with 2 different power supplies.
28 lut 2021 · It is fitted with Genuine OPA2134 first stage and LM4562 second. I would like to try some alternatives as suggested but to pose a thought. I wonder how differing capacitor quality and dielectric affect the sound as well. Obviously op amp change in a given circuit can privide side by side comparison.
7 sty 2021 · We have now SINAD = 88dB at 5W/4ohm/1kHz and @24kHz BW. So considering NE5532, LM4562 and OPA2134, OPA2134 gives best measured results in AIYIMA A07. And it is a JFET opamp, which is always preferred by myself in the positions where slightly higher voltage noise of the opamp is negligible, like here.
3 sty 2023 · I rolled the T6 Pro with the Oracle 02 op amps in the preamp output stage and the opa1622 in the A07. A more refined sound all round than the 2604/4562 combo. Todays opa combo gave tighter bass, clearer vocals, more organic, better instrument separation across the board and more air in the highs.
8 gru 2018 · The LM4562 is a completely unsuitable replacement for a J-FET op-amp. It's a BJT input op-amp with a high bias current of 72nA, compared to, 65pA typical, 20nA worst case, for a J-FET op-amp such the old TL072 and a 55MHz of GBWP could be far too fast for a circuit and layout designed for one with a GBWP of 3MHz.
