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  
 
Giá sản phẩm trên Tiki đã bao gồm thuế theo luật hiện hành. Tuy nhiên tuỳ vào từng loại sản phẩm hoặc phương thức, địa chỉ giao hàng mà có thể phát sinh thêm chi phí khác như phí vận chuyển, phụ phí hàng cồng kềnh, ...