Topping Aa50s - Bộ Preamplifier Công Nghệ NFCA Dùng Cho Headphone Single-End Cổng 6.35mm SE và 4.4mm - Hàng Chính Hãng

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Topping Aa50s - Bộ Preamplifier Công Nghệ NFCA Dùng Cho Headphone Single-End Cổng 6.35mm SE và 4.4mm - Hàng Chính Hãng Với A50s, Topping cung cấp bộ khuếch đại tai nghe chất lượng cao và bộ tiền...
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Giới thiệu Topping Aa50s - Bộ Preamplifier Công Nghệ NFCA Dùng Cho Headphone Single-End Cổng 6.35mm SE và 4.4mm - Hàng Chính Hãng

Ultra high performance NFCA module

At the heart of the A50s is an NFCA (Nested Feedback Composite Amplifier) module, />

Robust aluminium housing

The components of the A50s are integrated in a solid Aluminium frame, CNC machined with high precision. Extremely robust, it also provides excellent heat dissipation to effectively remove heat from the power supply and AOPs of the unit.

Balanced & Single-ended

Although the A50s has only an unbalanced input, it has a balanced amplifier circuit. It can therefore be used with unbalanced headphones on its 6.35mm jack output, or with balanced headphones on its 4.4mm jack output.

 

Adjustable gain

The Topping amplifier offers a gain setting of 0dB or 6dB in unbalanced mode, or 6dB and 12dB in balanced mode. Once again, this setting, coupled with an ultra-low noise of 0.3µVrms, allows the A50s to adapt to both sensitive EMIs and headphones requiring a high energy input.

An excellent preamplifier

If the main function of the A50s is headphone amplification, it is also a very good preamplifier with excellent performance. In preamplification mode, the output impedance is only 20Ω, ensuring compatibility with many devices.

Automatic switching

When the A50s is not connected to headphones or earphones, it automatically switches to preamplifier mode, with the amplified signal outputting through the RCA output on the rear panel. Conversely, if headphones are connected to the 6.35mm or 4.4mm jack outputs, the unit instantly switches to headphone amplifier function.

SPECIFICATIONS
Product type Headphone amplifier
Preampliier
Input 1x Stereo RCA
Outputs 1x Single-ended Jack 6.35mm headphone output
1x Balanced Jack 4.4mm headphone output
1x Stereo RCA preamp output
THD+N Single-ended headphone output Jack 6.35mm : < 0.00007% @ 850mW, 32Ω, 1kHz, A-Weighting
Single-ended headphone output Jack 6.35mm : < 0.00006% @ 90mW, 300Ω, 1kHz, A-Weighting
Balanced headphone output Jack 4.4mm : < 0.00007% @ 3.4W, 32Ω, 1kHz, A-Weighting
Balanced headphone output Jack 4.4mm : < 0.00006% @ 367mW, 300Ω, 1kHz, A-Weighting
THD Single-ended headphone output Jack 6.35mm : < 0.0004% @ 720mW, 32Ω, 20Hz-20kHz, 90kBW
Single-ended headphone output Jack 6.35mm : < 0.0002% @ 77mW, 300Ω, 20Hz-20kHz, 90kBW
Balanced headphone output Jack 4.4mm : < 0.001% @ 2.88W, 32Ω, 20Hz-20kHz, 90kBW
Balanced headphone output Jack 4.4mm : < 0.0005% @ 307mW, 300Ω, 20Hz-20kHz, 90kBW
SNR Single-ended headphone output Jack 6.35mm : 137dB @ MAX OUT, 1kHz, A-Weighting
Balanced headphone output Jack 4.4mm : 143dB @ MAX OUT, 1kHz, A-Weighting
Dynamic range Single-ended headphone output  Jack 6.35mm : 138dB @ 1kHz, A-Weighting
Balanced headphone output Jack 4.4mm : 144dB @ 1kHz, A-Weighting
Frequency response Single-ended headphone output Jack 6.35mm : 20Hz - 200kHz (±0.05dB)
Balanced headphone output Jack 4.4mm : 20Hz - 200kHz (±0.05dB)
Output level Single-ended headphone output Jack 6.35mm : 21Vpp
Balanced headphone output Jack 4.4mm : 42Vpp
Noise level Single-ended headphone output Jack 6.35mm : < 0.3µVrms @ G=L, A-Weighting
Single-ended headphone output Jack 6.35mm : < 0.45µVrms @ G=H, A-Weighting
Balanced headphone output Jack 4.4mm : < 0.6µVrms @ G=L, A-Weighting
Balanced headphone output Jack 4.4mm : < 0.95µVrms @ G=H, A-Weighting
Crosstalk Single-ended headphone output Jack 6.35mm : -86dB @ 1kHz
Balanced headphone output Jack 4.4mm : -128dB @ 1kHz
IMD CCIF Single-ended headphone output Jack 6.35mm : -116dB @ 18kHz + 19kHz
Balanced headphone output Jack 4.4mm : -116 @ 18kHz + 19kHz
IMD SMPTE Single-ended headphone output Jack 6.35mm : -110dB, SMPTE4:1 @ 60Hz + 7kHz
Single-ended headphone output Jack 6.35mm : -118dB, SMPTE1:1 @ 60Hz + 7kHz
Balanced headphone output Jack 4.4mm : -110dB, SMPTE4:1 @ 60Hz + 7kHz
Balanced headphone output Jack 4.4mm : -118dB, SMPTE1:1 @ 60Hz + 7kHz
Input sensitivity Single-ended headphone output Jack 6.35mm : 7.5Vrms @ G=0dB
Single-ended headphone output Jack 6.35mm : 3.8Vrms @ G=6dB
Balanced headphone output Jack 4.4mm : 7.5Vrms @ G=0dB
Balanced headphone output Jack 4.4mm : 3.8Vrms @ G=6dB
Gain Single-ended headphone output Jack 6.35mm : 0dB @ G=0dB
Single-ended headphone output Jack 6.35mm : 6dB @ G=6dB
Balanced headphone output Jack 4.4mm : 6dB @ G=0dB
Balanced headphone output Jack 4.4mm : 12dB @ G=6dB
Output impedance Single-ended headphone output Jack 6.35mm : < 0.1Ω
Balanced headphone output Jack 4.4mm : < 0.2Ω
Output power @ THD+N < 1% Single-ended headphone output Jack 6.35mm : 2x 1.4W @ 32Ω
Single-ended headphone output Jack 6.35mm : 2x 192mW @ 300Ω
Balanced headphone output Jack 4.4mm : 2x 3.5W @ 32Ω
Balanced headphone output Jack 4.4mm : 2x 760mW @ 300Ω
Output power @ 2Vrms IN Single-ended headphone output Jack 6.35mm : 2x 485mW @ 32Ω
Single-ended headphone output Jack 6.35mm : 2x 52mW @ 300Ω
Balanced headphone output Jack 4.4mm : 2x 1950mWW @ 32Ω
Balanced headphone output Jack 4.4mm : 2x 208mW @ 300Ω
Load impedance Single-ended headphone output Jack 6.35mm : > 8Ω
Balanced headphone output Jack 4.4mm : > 8Ω
GENERAL
Power supply (included) 15VDC
Housing material Aluminum
Dimensions 11 x 12.3 x 2.6cm
Color Silver
Package 1x Topping A50s
1x Male Jack 6.35mm to female Jack 3.5mm
1x Power supply

 

 

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Thương hiệuTopping
Xuất xứ thương hiệuTrung Quốc
Xuất xứTrung Quốc
Phụ kiện đi kèm1 nguồn; 1 jack 6.35 ra 3.5mm; 1 sách HDSD tiếng Anh, 1 thẻ BH của hãng
SKU8701643787458