S1 Class A Headphone Amplifier A1930/C5171 Audio JRC4580DD/LM4562 Opamp Headphone Amplifier

The S1 headphone amplifier is a self-designed circuit that adopts high-quality double-sided thick gold-plated PCB (2MM substrate, 70U copper foil thickness, performance far exceeds 30U). It features a high-quality 25W encapsulated transformer, powered by brand new Ansemic LM317/337 voltage regulation ICs, headphone protection circuit, integrated design, and a very high signal-to-noise ratio. It is housed in a high-grade all-aluminum case with a solid aluminum knob, providing an aesthetically pleasing and atmospheric appearance.

Version 1: 110V + JRC4580DD op amp +ALPS16 potentiometer

Version 2: 110V + JRC4580DD op amp +ALPS27 potentiometer

Version 3: 220V + JRC4580DD op amp +ALPS16 potentiometer

Version4: 220V + JRC4580DD op amp +ALPS27 potentiometer

Version 5: 110V + LM4562 op amp +ALPS16 potentiometer

Version 6: 110V + LM4562 op amp +ALPS27 potentiometer

Version 7: 220V + LM4562 op amp +ALPS27 potentiometer

Version 8: 220V + LM4562 op amp +ALPS27 potentiometer

Product Details

Adopt advanced double-sided thickened gold-plated PCB (base plate 2MM, copper foil thickness 70U)

High quality 25W potting transformer

New Anson Beauty LM317/337 stabilized IC power supply

High-grade all-aluminum case with solid all-aluminum knobs

Military 718 factory high precision low temperature bleach metal film resistance

Japan original new ELNA Electrolysis

Panasonic MXL Audio Master Electrolysis

Original Toshiba A1930/C5171 Audio Special Pair Tube (static current 30MA per tube)

New original JRC4580DD/LM4562 Op-AMP

Japanese original ALPS16/27 potentiometer

Japan Kokamizawa relay, American CMC RCA, etc.

Product Parameters

Size: 165MM wide, 190MM deep, 75MM high

Weight: about 1.8KG

Output power: 32 Ω 2000MW, 150 Ω 1000MW, 300 Ω 500MW

Packing list

1× S1 Headphone Amplifier （without Power cable）


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