HiFi Fully Discrete OP AMP Module Low Noise Field-effect Transistor Differential Input Large Current Output Single / Dual OP AMP

This product is purely handmade, and its circuit is designed based on the open-loop machine circuit of a well-known foreign brand. It has great analog sound and produces a playback effect that is full, relaxed, thick, mild, and easy to listen to.

The circuit is the same as the Standard Version, and the transistors used have performance close to the original transistor parameters.

This product has two major characteristics:

1. It uses direct-insertion audio-specific transistors. The transistors used in this operational amplifier module are the top-grade audio components from the glorious period of the audio industry, which cannot be compared with the current industrial patch components. Audio enthusiasts understand this!
2. Hand-picked transistors: After hand-picking, the output midpoint voltage level is completely ensured by relying on the consistency of the transistors themselves (senior audiophiles know the importance of this).Instead of the current popular potentiometer regulator artificially changing line parameters to control the output level.

Specifications:

Operating voltage: ±10V——±18V

Output current: 150MA

Output voltage: ±10mV

Input impedance: 1M

Note: A senior audiophile who has used this operational amplifier shared his experience. He said that the REEL TO REEL RECORDER effect is very charming, especially when playing tapes. It produces a full, relaxed, solid, gentle, and pleasant listening effect. The OP AMP uses the redesigned and improved amplification part of the REEL TO REEL RECORDER circuit. The compatibility of the revised circuit is greatly improved, and its frequency response and stability are excellent. When used with his double 1794, it creates a unique thickness and musical charm of tapes, and the clarity is similar to vinyl. Its emotional expression is stronger than CD or digital broadcasting, and it performs much better than general gold-sealed operational amplifiers in terms of sound quality. The sound moves quickly, and the output sound is clean, clear, natural, and accurately restores the audio signal without excessive subjective color. The sound field performance is detailed, delicate, with good separation and layered feeling. The low and medium frequencies sound warm and soft, and contain emotions and expressions.