The crown seal is made of copper thick film technology, which has superior heat dissipation. Each product is made with a feverish spirit that is almost pursued. It lays the foundation for a good sound. There is no imitation. The crown uses a copper shell and does not require an additional radiator and other common OP gold seals. If you want to be larger, the dots on the side should be in the direction of the notch seat.
Work heat tens of degrees, fake work has no temperature
The new copper has a high conversion rate and high bandwidth, and the machine is obviously better than the ordinary white version and the square version.
Genuine copper
The crown is fully discrete dual op amp, based on the Marantz crown circuit. The input uses the warm sound field effect tube precision pairing. Because of the large number of components, it can only be used in the discrete front stage. The board is very large. Now it is often carefully designed. , The bottom area is similar to that of dual op amps, and the pins are familiar and compatible with NE5532 MUS02 OPA2604 LME49720HA, MUSES01, LME49720HA, OPA2107AP, etc.
Brand: Crown Discrete Device
Origin: Netherlands
Model: Crown OP HDAM9988SQ/883B Low distortion and low noise audio operational amplifier
Specification: DIP8 double row eight-pin straight plug
Voltage: ±3V~±24 V
Distortion: 0.0001% 1KHz
Speed: 55V/μs
Bandwidth: 100MHz
Low noise dual operational amplifier
The new upgraded version of the crown op amp is fully balanced, clean sound bottom, natural hearing resistance, high analytical power, large dynamics, deep low-frequency diving, full mid-frequency, warm and mellow, sweet and moisturized voice, transparent high-frequency, delicate and supple
The op amp models that can be directly replaced are:
AD823, AD823AN, AD8066, AD8620, AD712, AD827, C4570, JRC4556AD, JRC4580, JRC5532, JRC5532D, JRC5534, LF353, LM4562, LME49860, LM833N, MUSES8920, NE5532, NEC4520, NEC4570, NJM558M2114 NJM4558 NJM4560, NJM5532, NJM4558P, OP275, OPA1612, OPA2277PA, OPA2132, OPA2134, OPA2604, JRC4558, RC4558D, RC4558P, TL052, TL072, MUSES01,, MUSES8820, MUSES8920, MUSES883