Merkmale: Ultra-Hochleistung Der A50 verwendet dasselbe NFCA-Modul (Nested Feedback Composite Amplifier) wie das Flaggschiff A90. Die hybride Spannungs-Strom-Rückkopplungsarchitektur bietet zusammen mit der UHGF (Ultra High Gain Feedback)-Technologie eine hervorragende DC- und AC-Leistung. Durch die Fähigkeit zur Ansteuerung mit hohem Ausgangsstrom kann der Verstärker problemlos Kopfhörer mit niedriger Impedanz ansteuern. Ultra-niedriges Rauschen von 0,3uV ist der Konkurrenz meilenweit voraus, was einen absurd hohen Dynamikbereich von 144dB und keine hörbaren Geräusche und dunkelsten Hintergrund für die empfindlichsten IEMs ergibt. 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. 6,35 mm SE & 4,4 mm symmetrischer Ausgang Obwohl es nur einen unsymmetrischen Eingang gibt, verfügt der A50s über eine eingebaute symmetrische Verstärkerschaltung. Daher kann er unsymmetrische Kopfhörer über einen 6,35-mm-Ausgang und symmetrische Kopfhörer über einen 4,4-mm-Ausgang ansteuern. 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. Ein ausgezeichneter Vorverstärker Die NFCA-Module der A50s sind nicht nur in der Lage, den Kopfhörer anzusteuern, sondern gelten auch als Vorverstärker mit der gleichen ultrahohen Leistung. Im Vorverstärkermodus beträgt die Ausgangsimpedanz nur 20 Ohm, was für verschiedene Geräte sehr gut geeignet ist. 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. Technical Data. Specifications Product type Headphone amplifierPreampliier Input 1x Stereo RCA Outputs 1x Single-ended Jack 6.35mm headphone output1x Balanced Jack 4.4mm headphone output1x Stereo RCA preamp output THD+N Single-ended headphone output Jack 6.35mm : < 0.00007% @ 850mW, 32Ω, 1kHz, A-WeightingSingle-ended headphone output Jack 6.35mm : < 0.00006% @ 90mW, 300Ω, 1kHz, A-WeightingBalanced headphone output Jack 4.4mm : < 0.00007% @ 3.4W, 32Ω, 1kHz, A-WeightingBalanced 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, 90kBWSingle-ended headphone output Jack 6.35mm : < 0.0002% @ 77mW, 300Ω, 20Hz-20kHz, 90kBWBalanced headphone output Jack 4.4mm : < 0.001% @ 2.88W, 32Ω, 20Hz-20kHz, 90kBWBalanced 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-WeightingBalanced headphone output Jack 4.4mm : 143dB @ MAX OUT, 1kHz, A-Weighting Dynamic range Single-ended headphone output Jack 6.35mm : 138dB @ 1kHz, A-WeightingBalanced 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 : 21VppBalanced headphone output Jack 4.4mm : 42Vpp Noise level Single-ended headphone output Jack 6.35mm : < 0.3µVrms @ G=L, A-WeightingSingle-ended headphone output Jack 6.35mm : < 0.45µVrms @ G=H, A-WeightingBalanced headphone output Jack 4.4mm : < 0.6µVrms @ G=L, A-WeightingBalanced headphone output Jack 4.4mm : < 0.95µVrms @ G=H, A-Weighting Crosstalk Single-ended headphone output Jack 6.35mm : -86dB @ 1kHzBalanced headphone output Jack 4.4mm : -128dB @ 1kHz IMD CCIF Single-ended headphone output Jack 6.35mm : -116dB @ 18kHz + 19kHzBalanced headphone output Jack 4.4mm : -116 @ 18kHz + 19kHz IMD SMPTE Single-ended headphone output Jack 6.35mm : -110dB, SMPTE4:1 @ 60Hz + 7kHzSingle-ended headphone output Jack 6.35mm : -118dB, SMPTE1:1 @ 60Hz + 7kHzBalanced headphone output Jack 4.4mm : -110dB, SMPTE4:1 @ 60Hz + 7kHzBalanced headphone output Jack 4.4mm : -118dB, SMPTE1:1 @ 60Hz + 7kHz Input sensitivity Single-ended headphone output Jack 6.35mm : 7.5Vrms @ G=0dBSingle-ended headphone output Jack 6.35mm : 3.8Vrms @ G=6dBBalanced headphone output Jack 4.4mm : 7.5Vrms @ G=0dBBalanced headphone output Jack 4.4mm : 3.8Vrms @ G=6dB Gain Single-ended headphone output Jack 6.35mm : 0dB @ G=0dBSingle-ended headphone output Jack 6.35mm : 6dB @ G=6dBBalanced headphone output Jack 4.4mm : 6dB @ G=0dBBalanced headphone output Jack 4.4mm : 12dB @ G=6dB Output impedance Single-ended headphone output Jack 6.35mm : < 0.1ΩBalanced headphone output Jack 4.4mm : < 0.2Ω Output power @ THD+N < 1% Single-ended headphone output Jack 6.35mm : 2x 1.4W @ 32ΩSingle-ended headphone output Jack 6.35mm : 2x 192mW @ 300ΩBalanced headphone output Jack 4.4mm : 2x 3.5W @ 32ΩBalanced headphone output Jack 4.4mm : 2x 760mW @ 300Ω Output power @ 2Vrms IN Single-ended headphone output Jack 6.35mm : 2x 485mW @ 32ΩSingle-ended headphone output Jack 6.35mm : 2x 52mW @ 300ΩBalanced headphone output Jack 4.4mm : 2x 1950mWW @ 32ΩBalanced headphone output Jack 4.4mm : 2x 208mW @ 300Ω Load impedance Single-ended headphone output Jack 6.35mm : > 8ΩBalanced headphone output Jack 4.4mm : > 8Ω General Power supply (included) 15VDC Housing material Aluminum Dimensions 11 x 12.3 x 2.6cm Color Black Package 1x Topping A50s1x Male Jack 6.35mm to female Jack 3.5mm1x Power supply
