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TOPPING A50S Balanced Headphone Amplifier Preamplifier Black

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With the A50s, Topping offers a high quality headphone amplifier and sedentary preamplifier combo, integrating both balanced and unbalanced connections. Its optimized circuits, based on very good audio components, allow a precise, detailed and musical restitution. The A50s is also designed to be versatile, capable of adapting to the vast majority of headphones and earphones on the market, including demanding models.

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5.0 / 5
  Based on 1 customers reviews.


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Shipping date: 12-11-2024.

Orders placed before 12h (GMT+1) will generally be shipped the same day (working day).

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2 Years warranty

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Accessories for this product

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Topping A50s

Balanced Headphone Amplifier Preamplifier Black

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

With the A50s, Topping offers a high quality headphone amplifier and sedentary preamplifier combo, integrating both balanced and unbalanced connections. Its optimized circuits, based on very good audio components, allow a precise, detailed and musical restitution. The A50s is also designed to be versatile, capable of adapting to the vast majority of headphones and earphones on the market, including demanding models.

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

Ultra high performance NFCA module

At the heart of the A50s is an NFCA (Nested Feedback Composite Amplifier) module, identical to the one used in the brand's flagship, the A90. Its hybrid current/voltage architecture associated with UHGF (Ultra High Gain Feedback) technology offers excellent DC and AC performance. A high output current allows the amplifier to accompany all types of headphones. An ultra-low noise level of 0.3µV, a dynamic range of 144dB and the absence of background noise also allow the A50s to easily power the most sensitive EMIs.
Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

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.

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

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.

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

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.

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

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.

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir

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.

Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir
1ON/OFF Switch
Gain selector
2Gain indicator
3Jack 6.35mm single-ended headphone output
4Jack 4.4mm balanced headphone output 
5Volume button
6Right channel RCA analog input
7Left channel RCA analog input
8Right channel RCA preamp output
9Left channel RCA preamp output
10Power connector

Technical characteristics

Specifications
Product typeHeadphone amplifier
Preampliier
Input1x Stereo RCA
Outputs1x Single-ended Jack 6.35mm headphone output
1x Balanced Jack 4.4mm headphone output
1x Stereo RCA preamp output
THD+NSingle-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
THDSingle-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
SNRSingle-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 rangeSingle-ended headphone output  Jack 6.35mm : 138dB @ 1kHz, A-Weighting
Balanced headphone output Jack 4.4mm : 144dB @ 1kHz, A-Weighting
Frequency responseSingle-ended headphone output Jack 6.35mm : 20Hz - 200kHz (±0.05dB)
Balanced headphone output Jack 4.4mm : 20Hz - 200kHz (±0.05dB)
Output levelSingle-ended headphone output Jack 6.35mm : 21Vpp
Balanced headphone output Jack 4.4mm : 42Vpp
Noise levelSingle-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
CrosstalkSingle-ended headphone output Jack 6.35mm : -86dB @ 1kHz
Balanced headphone output Jack 4.4mm : -128dB @ 1kHz
IMD CCIFSingle-ended headphone output Jack 6.35mm : -116dB @ 18kHz + 19kHz
Balanced headphone output Jack 4.4mm : -116 @ 18kHz + 19kHz
IMD SMPTESingle-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 sensitivitySingle-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
GainSingle-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 impedanceSingle-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 INSingle-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 impedanceSingle-ended headphone output Jack 6.35mm : > 8Ω
Balanced headphone output Jack 4.4mm : > 8Ω
General
Power supply (included)15VDC
Housing materialAluminum
Dimensions11 x 12.3 x 2.6cm
ColorBlack
Package1x Topping A50s
1x Male Jack 6.35mm to female Jack 3.5mm
1x Power supply
Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir Topping A50s Amplificateur Casque Préamplificateur Symétrique Noir
 
Data sheet
InputRCA
OutputRCA
OutputJack 4.4mm
OutputJack 6.35mm
ColorBlack
ClassN/A
Remote ControlNo
 
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Average votes
5.0 / 5
1 reviews
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 5/5
Date :
Excellent AMP
For size this is amazing amp, in power it can not compare to normal speaker amp but it drives my dt770 pro amazingly and when there is nothing playing there is dead silence. I love audiphonics and this amp.
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This review has been posted for TOPPING A50S Balanced Headphone Amplifier Preamplifier Black
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TOPPING A50S Balanced Headphone Amplifier Preamplifier Black
TOPPING A50S Balanced Headphone Amplifier Preamplifier Black
With the A50s, Topping offers a high quality headphone amplifier and sedentary preamplifier combo, integrating both balanced and unbalanced...

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