SPECIFICATIONS

Ha4212 discrete dual operational amplifier. Rubbing it myself. Beyond ss36028620br, welcome to compare


Withstand voltage+-10v~± 18v, actually the upper limit can reach 20v
Mondofu soldering, 3u gold-plated pins, balanced tuning. If using XD05CP, you can only plug in the left single terminal and only need one. However, a customized ultra short version is required, and the machine needs to modify the operational amplifier decoupling capacitor to be horizontal


High frequency performance: Excellent high-frequency resolution, relaxed and lively sound, suitable for string instruments such as violin, guitar, and harp
In terms of performance, transient control is excellent. Under better device driving, its dynamics and density perform better.
Mid frequency performance: The vocal performance is relatively full, with good analytical and imaging power, and the sound is smooth
The presentation details are natural, the hierarchy is clear, and the sound is clean.
Low frequency performance: Low frequency is sturdy, powerful, and faster, clean.
Note: The overall sound quality and style are generally similar, but there may be differences among different devices. Some R2R machines may have a blurry listening experience, so be cautious when shooting. To crack the R2R's blur, it is necessary to use the front end of 4212, such as LPF, in conjunction with 4631


This dual operational amplifier is made of fully discrete components, with original imported 14 pairs of twin transistors, 4 pairs of transistors, and 2 pairs of transistors
Amplify the current of the transistor with medium power. The upper and lower layers are manually paired and made in pairs to achieve better one-to-one compatibility.
Class A output (CL.ASS A OUTPUT) is 15MA, with a maximum output of 65MA.
As a result, the overall sound quality is wide and full, the scene is grand, the layers are distinct, the mid-range is bright and clear, and the sound is dense
High frequency, deep and elastic low-frequency diving, overall tuning and balance, high frequency brilliance


THD+N: 0.0003%(1KHZ)
Power supply voltage: ± 10V to ± 20V
Low noise: 3.6nV/VHz at 10KHZ
·Class A output current 15mA
Open loop gain: 145dB
Maximum output current 65mA