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Hi-End audio two-channel operational amplifier
AS402 Hi-End audio two-channel operational amplifier
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AS402 is two channel
bipolar-input Hi-End audio operational amplifier and provide ultra-low
THD+Noise level -130dB (1Khz) and -110dB (40kHz) for Rl= 600 Ohm &
Cl=100 pF. Amplifier drives a 32 Ohm load at 10 mW and 600 Ohm load at
70 mW. AS402 is unity-gain stable and provides excellent dynamic
behavior over a wide range gain and load conditions at a wide supply
range of ±4.5 to ±18 V. AS402 is a hybrid module with DIP8
footprint.
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Customers reviews:
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replacing the operational amplifiers in the post-DAC AK4497 filter.
With MUSES02, the sound can be characterized as bright, sonorous with an average
separation of instruments, scale sounds and dynamics are good, but not
outstanding. With AS402 (ALFA), the sound became more transparent, with a
lot of small nuances and high resolution. Dynamic contrasts are very
expressive and emotional. The low-frequency range is detailed and fundamental.
The music scene has clear spatial outlines with tangible images and the air
between them. For example, the drum kit is very natural, You can clearly
hear which drum or cymbal was hit by drumstick, to the left - to the right,
higher - lower, closer - further. "
TECHNICAL DOCUMENTATION:
AS401-AS402 comparative review in Hi-End Audio-DAC application - by Dmitry
Andronnikov
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