Topping A50S Desktop headphone amp.  is a Ultra-High Performance NFCA modules, using the same NFCA (Nested Feedback Composite Amplifier) module from flagship A90. Voltage Current hybrid feedback architecture along with UHGF (Ultra High Gain Feedback) technology provides excellent DC and AC performance. High output current drive capability allows the amp driving low impedance headphones with ease.

Ultra-low noise of 0.3uV is miles ahead of the competition, giving an absurdly high dynamic proformance of 141dB and no audible floor noise for the most sensitive IEMs.

The A50s also features a ultra wide frequency response, which exceeds the CD and Hi-Res Audio standard, which can be sent to the three outputs 6.35mm single ended and 4.4mm balanced headphone outputs and RCA pre outs.

The A50s has a digitally controlled volume which fixes some issues that other products have with potentiometers and thus increasing reliability.

If you would like to hear your music on another speaker amplifier or active speakers no problem you can do this via the RCA connectors on the rear of the unit which is controlled via the same volume control, just remove your headphones and this output switches on and plug your headphone in again to switch it off it is this simple.

The A50s family fits nicely in any situation the D50 Dac and the P50 upgraded power supply will give you hours of happy listening.

Topping A50S Headphone Amplifier

£219.99
£219.99
Colour: Black

Topping A50S Desktop headphone amp.  is a Ultra-High Performance NFCA modules, using the same NFCA (Nested Feedback Composite Amplifier) module from flagship A90. Voltage Current hybrid feedback architecture along with UHGF (Ultra High Gain Feedback) technology provides excellent DC and AC performance. High output current drive capability allows the amp driving low impedance headphones with ease.

Ultra-low noise of 0.3uV is miles ahead of the competition, giving an absurdly high dynamic proformance of 141dB and no audible floor noise for the most sensitive IEMs.

The A50s also features a ultra wide frequency response, which exceeds the CD and Hi-Res Audio standard, which can be sent to the three outputs 6.35mm single ended and 4.4mm balanced headphone outputs and RCA pre outs.

The A50s has a digitally controlled volume which fixes some issues that other products have with potentiometers and thus increasing reliability.

If you would like to hear your music on another speaker amplifier or active speakers no problem you can do this via the RCA connectors on the rear of the unit which is controlled via the same volume control, just remove your headphones and this output switches on and plug your headphone in again to switch it off it is this simple.

The A50s family fits nicely in any situation the D50 Dac and the P50 upgraded power supply will give you hours of happy listening.

Feature Details
Product Type Desktop Headphone Amplifier
Construction CNC Unibody
Compatibility Best choice for D50/D50s
Module NFCA (Nested Feedback Composite Amplifier)
THD+N Less than 0.00007%
Gain Settings 2 selectable gain settings
Output 6.35mm single-ended output, 4.4mm balanced output, RCA pre-amplifier out
Hi-Res Audio Certification Yes
Specification 6.35mm Output 4.4mm Balanced Output
THD+N @1kHz A-wt <0.00007% @Output=850mW(32Ω) / <0.00006% @Output=90mW(300Ω) <0.00007% @Output=3.4W(32Ω) / <0.00006% @Output=367mW(300Ω)
THD @20-20kHz 90kBW <0.0004% @Output=720mW(32Ω) / <0.0002% @Output=77mW(300Ω) <0.001% @Output=2.88W(32Ω) / <0.0005% @Output=307mW(300Ω)
SNR @MAX OUT 1kHz A-wt 137dB 143dB
Dynamic Range @ 1kHz A-wt 138dB 144dB
Frequency Response 20Hz-200kHz(+0.05dB) 20Hz-200kHz(+0.05dB)
Output Level 21Vpp 42Vpp
AP measured noise level @A-wt <0.7uVrms @G=L / <0.8uVrms @G=H <0.9uVrms @G=L / <1.1uVrms @G=H
Actual noise level* @A-wt <0.3uVrms @G=L / <0.45uVrms @G=H <0.6uVrms @G=L / <0.95uVrms @G=H
Channel Crosstalk @1kHz -86dB -128dB
IMD CCIF@(18kHz + 19kHz) -116dB -116dB
IMD SMPTE @(60Hz + 7kHz) -110dB, SMPTE4: 1, -118dB, SMPTE1: 1 -110dB, SMPTE4: 1, -118dB, SMPTE1: 1
Input Sensitivity 7.5Vrms @G=OdB / 3.8Vrms @G=6dB 7.5Vrms @G=0dB / 3.8Vrms @G=6dB
Gain 0.0dB@G=0dB / 6.0dB@G=6dB 6.0dB@G=0dB / 12.0dB@G=6dB
Output Impedance <0.1Ω <0.2Ω
Output Power THD+N<1 % 1.4

Item Ships from our UK Warehouse - Typical delivery is 3 - 5 business days for mainland UK.

OTIC can be contacted for updates.

UK ORDERS - Free shipping on all baskets over £250.

We offer a refund on any unused items, subject to our returns policy.

Click here to view all delivery & returns info - including shipping, tax and duty information for International Customers.

Products purchased from OTIC Audio are supplied with a manufacturer warranty that is specified on the product page on our website. Most products come with a 1Y manufacturer warranty (or 3 months for B-grade, open box, refurbished, ex-demo, and second-hand items).

The manufacturer's warranties are limited to physical defects in the materials, parts, and workmanship used in making the product. Abnormal conditions, deliberate abuse, and damage due to accidents, operator's error, or unauthorized service attempts are excluded from any warranty claims.

Faulty goods returned under the manufacturer's warranty are to be returned to OTIC Audio at the cost of the customer. OTIC Audio will cover the cost of shipping the repaired or replacement product back to the customer.

Topping A50S Headphone Amplifier

Topping A50S Headphone Amplifier

£219.99

Topping A50S Headphone Amplifier

£219.99
Colour: Black

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