Description
The power supply voltage regulator adopts LM317 and LM337, and the voltage stabilizing effect is better than the 78 series, and the regulated current is larger.
The op amp IC uses TI Texas Instruments NE5532, an extremely cost-effective op amp. (It can also be directly replaced by OPA2604, 4558, AD827, etc.)
Actual audition: All frequency points play well, transparent, powerful bass without chaos, listening resistance, may be due to the addition of large-capacity filter capacitors and TE coupling capacitors, do n’t say too much, you can do it yourself Go feel it
The toroidal transformer uses A1 grade Japanese iron core with no breaks, no heat and no shock. Thanks to the excellent performance of each component, the signal-to-noise ratio of the whole machine reaches 100DB.
Board size: 106MM * 148MM
Input voltage: AC 15V-0-15V
Applicable headphone impedance: 32Ω-600Ω
Frequency response: 20HZ-30KHZ
Size: 30CM deep * 20CM wide * 6CM high
Weight: 3 kg
Specification
Coil Number : Autotransformer
