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Singxer

Singxer SA-1 V2 Fully Balanced Class A Headphone Amplifier

Singxer SA-1 V2 Fully Balanced Class A Headphone Amplifier

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通常価格 ¥91,700 JPY
通常価格 ¥91,700 JPY セール価格 ¥91,700 JPY
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SINGXER SA-1 V2 Balanced Headphone Amplifier Class A

Description

The Singxer SA-1 V2 is a high-performance headphone amplifier and preamplifier based on a Class A architecture with fully balanced discrete circuits. This updated version features an optimized circuit design for lower output impedance and increased thrust, providing an exceptional audio experience for audiophiles.

Features

  • Full Analog Amplifier: The SA-1 V2 is completely analog, avoiding EMI interference caused by digital control, ensuring pure audio signal transmission.
  • ROHM Input Transistors: Ensures very low noise and excellent performance, with an output stage utilizing multi-stage current amplification similar to high-power amplifiers.
  • High-Power Output: Each channel incorporates 2 pairs of ON Semiconductor 4A transistors for low internal resistance and high output power, with comprehensive protection against overcurrent, overload, short-circuit, and more.
  • Versatile Connectivity: The SA-1 V2 offers various inputs and outputs, including balanced XLR and unbalanced RCA inputs, as well as balanced 4.4mm jack, 4-pole XLR, and unbalanced 6.35mm jack headphone outputs. Additionally, it features unbalanced RCA and balanced XLR preamplifier outputs.
  • Impedance Selection: The front panel includes switches for selecting input source (RCA or XLR) and impedance mode (LOW-Z or HI-Z) to accommodate high-sensitivity or high-impedance headphones.
  • Optimized Circuit Design: The V2 version features an optimized PCB routing and DC bias design, enhancing DC performance and output capacity.

Technical Specifications

  • Product Type: Headphone amplifier, Preamplifier
  • Amplification Type: Class A
  • Inputs: 1x Balanced XLR, 1x Unbalanced RCA
  • Outputs:
    • 1x Balanced XLR (Preamplifier)
    • 1x Unbalanced RCA (Preamplifier)
    • 1x Balanced 4.4mm jack (Headphone)
    • 1x Balanced XLR 4-pole (Headphone)
    • 1x Unbalanced 6.35mm jack (Headphone)
  • THD+N:
    • -120dB @ 1kHz, A-Weighting, 20Hz – 22kHz
    • -96dB @ low gain, 1kHz, A-Weighting, 20Hz-22kHz
  • Noise Level:
    • 0.66µV @ Max Output, SNR/DNR 147dB
    • 300nV RMS @ Low Gain, A-Weighting, 20Hz-22kHz
  • SNR: 147dB
  • Headphone Output Power:
    • Balanced output: 10000mW @ 16Ω
    • Balanced output: 5500mW @ 32Ω
    • Balanced output: 3100mW @ 68Ω
    • Balanced output: 2000mW @ 120Ω
    • Balanced output: 380mW @ 600Ω
    • Unbalanced output: 500mW @ 16Ω
    • Unbalanced output: 1375mW @ 32Ω
    • Unbalanced output: 775mW @ 68Ω
    • Unbalanced output: 500mW @ 120Ω
    • Unbalanced output: 95mW @ 600Ω
  • Gain Levels:
    • Unbalanced input, unbalanced output: low gain 0db, high gain 11db
    • Unbalanced input, balanced output: low gain 6 dB, high gain 17 dB
    • Balanced input, unbalanced output: low gain -6db, high gain 5db
    • Balanced input, balanced output: low gain 0db, high gain 11db
  • Output Impedance Levels:
    • Low-impedance output: 1.4 ohms (balanced) and 0.7 ohms (unbalanced)
    • High-impedance output: 11.4 ohms (balanced) and 10.7 ohms (unbalanced)
  • Power Supply: 100-240V AC, 50/60Hz
  • Dimensions: 234 x 170 x 46mm
  • Chassis Material: Aluminum
  • Color: Black
  • Weight: 1.8kg
  • Package Contents:
    • 1x Singxer SA-1 V2
    • 1x Power cable


Ultra-low distortion, the following figure shows the performance of APX555 test prototype:

 

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