Topping A50s Balanced Headphone Amplifier/Preamplifier

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171,31 €

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Description

TOPPING A50S

Balanced Headphone Amplifier Preamplifier

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.

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.

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 materialAluminum
Dimensions11 x 12.3 x 2.6cm
ColorBlack, Silver
Package1x Topping A50s
1x Male Jack 6.35mm to female Jack 3.5mm
1x Power supply

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