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Marantz HI-end Preamp Finished Board HDAM-SA3 Current Feedback Circuit 15V-22V
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Line Characteristics
Current feedback circuit
Marantz HDAM-SA3 core module circuitry
High resolution, high conversion speed, low distortion, low noise, and flat bandwidth
The high notes are broad and delicate, while the low notes are clean and powerful.
Stereo design
Ingredients for production
30 pairs of high-performance and highly stable through-hole transistors
KOA high-precision and high-stability audiophile resistor
ELNA high-temperature coupling capacitor
Panasonic power supply decoupling electrolytic capacitor
The thickness of the printed circuit board is 1.6mm and the thickness of the copper is 35um.
Welding is done using American ALPHA solder wire.
Specification Parameters
Plate size: 116*91mm height: 20mm
Power supply voltage: ±15 - 22V
Volume potentiometer: 20k
Outstanding AP test data. Test power supply: ±20V.
Distortion-free output: 14.90V
Magnification: 4.96 times
Residual noise: 4.4 μV
Signal-to-noise ratio: 130.3 dB
Dynamic range: 130.6 dB
THD Distortion: 0.000083%
THD+N Distortion: 0.000246%
Intermodulation Distortion: 0.000251%
Frequency response bandwidth: ±0.035 dB
Each finished board is tested for distortion, noise, midpoint, amplification factor, etc. before shipment. Only after passing the tests will it be dispatched, and all have photos taken for record.
The AP test of this board
Test equipment: APX525B
Test power supply: Our store is connected to a parallel voltage stabilizing power board for ±20V power supply
Gain
Amplification factor: Input 1V and output 4.96V
Maximum undistorted output value
Input-output linearity
Level/THD relationship
Frequency/THD relationship
Minimum distortion
Intermodulation distortion
Residual noise, signal-to-noise ratio, dynamic range
Bandwidth, attenuation
Channel crosstalk and phase difference
High-End Preamp Board for Audiophiles The Marantz HI-end Preamp Finished Board HDAM-SA3 features a current feedback circuit designed for superior audio performance and precision in high-fidelity systems.
Optimized Voltage Range for Stability Engineered to operate within 15V–22V, this board ensures stable and consistent signal processing, ideal for demanding amplifier applications.
Compact Dimensions for Easy Integration Measuring 115 x 90 x 25 mm, the board fits seamlessly into compact amplifier enclosures while maintaining optimal internal layout and heat dissipation.
Lightweight and Efficient Design Weighing only 105g, the HDAM-SA3 offers a lightweight solution without compromising on build quality or performance in high-end audio systems.
Single-Piece Packaging for Precision Use Sold as 1 piece per pack, this board is ideal for targeted upgrades or replacements, ensuring accuracy and ease in installation.
