Sugden SDA-1 circuit class A HIFI DIY stereo preamp board Low noise and low distortion

Name: Sugden SDA-1 circuit class A HIFI DIY stereo preamp board Low noise and low distortion
Brand: BRZ-hifi-audio
SKU: SDA-1
Price: 29 USD
Availability: InStock

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Description

Features:

Referring to Sugden SDA-1 full DC circuit design, without coupling or feedback capacitors, Philips NE5534 operational amplifier is used as the core amplifier, and the output terminal adopts a 10mA Class A current design The sound is transparent and pleasant to the ear.
● Using 8 K170 field-effect transistors as inputs
● KOA Audiophile resistor
● 1.6mm thick PCB, 35um thick copper
● ALPHA tin wire welding in the United States
● Integrated design of power supply, amplification, and output protection.
● Class A design
● Each preamp board undergoes rigorous testing before shipment

Parameters:

● Size: 148 * 109mm
● Supply voltage: AC15-18V * 2.
● Input impedance: 220K Ω
● Output effective value: 10V
● Channel gain: 10.6dB 3.42
● Double output noise: 2.363uV super low
● Signal to noise ratio: 131.3dB
● Dynamic range: 131.5dB
● Channel crosstalk: -106.6dB
● THD distortion: 0.000061%
● THD+N distortion: 0.000222%
● Audio bandwidth: ± 0.039dB

List:

1 x Preamplifier board