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Topping A90 Discrete Balanced Headphone Amplifier - Black

Name: Topping A90 Discrete Balanced Headphone Amplifier - Black
Brand: Topping
SKU: A90DBLACK
Price: 599 GBP
Availability: InStock

In Stock.

Silver

£599.00

Black

£599.00

	Standard Items Usually bookshelf speakers* DPD	Medium Sized Items Usually TVs under 60" or £1000, and most floorstanding speakers* FEDEX	Large or Heavy Items Usually TVs over 60" or £1000, and heavy separates over 35kg* BJS (2-man delivery)	Pallet Sized Items Usually large/high-end floorstanding speakers or subs* PALLETFORCE
Standard Deliveries Order by 3pm Mon-Fri	Free next weekday delivery	Free 2 weekday delivery	Free 2 weekday, 2-man delivery	2 weekday kerbside delivery - £50 per item
Express Deliveries Order by 3pm Mon-Fri	Next weekday pre 10.30am £20 for up to 3 boxes + £5 per additional box Next weekday pre 12.30pm £15 for up to 2 boxes + £5 per additional box	Next weekday delivery - £20	X	X
Weekend Deliveries Order by 3pm Friday	£15 for up to 2 boxes + £3 per additional box	X	X	X
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri See Postcode Exclusions Below	2 weekday remote service £20 for first 2 items + £8.50 per additional box 2 weekday off-shore service £30 for first 2 items + £8.50 per additional box	Unfortunately, delivery of these product types is not available to remote locations	Unfortunately, delivery of these product types is not available to remote locations	Unfortunately, delivery of these product types is not available to remote locations

*Not exclusive to only these product types. Product value, weight, and fragility can influence the courier service used.

The Topping A90D is a high-performance, fully discrete balanced headphone amplifier featuring four NFCA modules and 9800mW x2 output power, delivering exceptional clarity, low distortion, and the ability to drive even low-impedance headphones with ease. It offers versatile connectivity, precise R2R relay volume control, and dual gain settings, making it suitable for both headphone amplification and preamp use.

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A90 Discrete Headphone Amplifier

Parameter	SE IN/SE OUT	BAL IN/SE OUT	SE IN/BAL OUT	BAL IN/BAL OUT
THD+N @1kHz (A-wt)	<0.000065% (500mW @32Ω) <0.000055% (80mW @300Ω)	<0.000080% (500mW @32Ω) <0.000060% (80mW @300Ω)T	<0.000065% (2000mW @32Ω) <0.000055% (320mW @300Ω)	<0.000080% (2000mW @32Ω) <0.000060% (320mW @300Ω)
THD @20-20kHz (90kBW)	<0.00030% (500mW @32Ω) <0.00025% (80mW @300Ω)	<0.00030% (500mW @32Ω) <0.00025% (80mW @300Ω)	<0.00030% (2000mW @32Ω) <0.00025% (320mW @300Ω)	<0.00030% (2000mW @32Ω) <0.00025% (320mW @300Ω
SNR @MAX OUT 1kHz (A-wt)	141dB	137dB	145dB	138dB
Dynamic Range @1kHz (A-wt)	141dB	137dB	145dB	138dB
Frequency Response	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.1dB)
Output Level	25Vpp	25Vpp	49Vpp	49Vpp
AP Measured Noise Level @A-wt	<1.1uVrms @G=L / <1.1uVrms @G=H	<1.1uVrms @G=L / <1.1uVrms @G=H	<1.8uVrms @G=L / <1.8uVrms @G=H	<1.8uVrms @G=L / <1.8uVrms @G=H
Actual Noise Level @A-wt	<0.2uVrms @G=L / <0.6uVrms @G=H	<0.2uVrms @G=L / <0.6uVrms @G=H	<0.7uVrms @G=L / <1.6uVrms @G=H	<0.7uVrms @G=L / <1.6uVrms @G=H
Channel Crosstalk @1kHz	-107dB	-105dB	-116dB	-113dB
Input Sensitivity	9.1Vrms @G=L / 3.0Vrms @G=H	9.3Vrms @G=L / 3.0Vrms @G=H	9.1Vrms @G=L / 3.0Vrms @G=H	9.3Vrms @G=L / 3.0Vrms @G=H
Gain	0dB @G=L / 9.5dB @G=H	-0.2dB @G=L / 9.3dB @G=H	6.0dB @G=L / 15.5dB @G=H	5.8dB @G=L / 15.3dB @G=H
Output Impedance	<0.1Ω	<0.1Ω	<0.2Ω	<0.2Ω
Load Impedance	>8Ω	>8Ω	>8Ω	>8Ω
Output Power	3300mW x2 @16Ω <0.1% THD+N 2000mW x2 @32Ω 1100mW x2 @64Ω 250mW x2 @300Ω	3300mW x2 @16Ω <0.1% THD+N 2000mW x2 @32Ω 1100mW x2 @64Ω 250mW x2 @300Ω	9800mW x2 @16Ω <0.1% THD+N 6700mW x2 @32Ω 4000mW x2 @64Ω 1000mW x2 @300Ω 500mW x2 @600Ω	9800mW x2 @16Ω <0.1% THD+N 6700mW x2 @32Ω 4000mW x2 @64Ω 1000mW x2 @300Ω 500mW x2 @600Ω

A90 Discrete Pre-Amp

Parameter	SE IN/SE OUT	BAL IN/SE OUT	SE IN/BAL OUT	BAL IN/BAL OUT
SNR @MAX OUT 1kHz (A-wt)	141dB	137dB	145dB	138dB
Dynamic Range @1kHz (A-wt)	141dB	137dB	145dB	138dB
Frequency Response	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.1dB)
Output Level	25Vpp	25Vpp	49Vpp	49Vpp
AP Measured Noise Level @A-wt	<1.1uVrms @G=L / <1.1uVrms @G=H	<1.1uVrms @G=L / <1.1uVrms @G=H	<1.8uVrms @G=L / <1.8uVrms @G=H	<1.8uVrms @G=L / <1.8uVrms @G=H
Actual Noise Level @A-wt	<0.2uVrms @G=L / <0.6uVrms @G=H	<0.2uVrms @G=L / <0.6uVrms @G=H	<0.7uVrms @G=L / <1.6uVrms @G=H	<0.7uVrms @G=L / <1.6uVrms @G=H
Channel Crosstalk @1kHz	-107dB	-105dB	-116dB	-113dB
Input Sensitivity	9.1Vrms @G=L / 3.0Vrms @G=H	9.3Vrms @G=L / 3.0Vrms @G=H	9.1Vrms @G=L / 3.0Vrms @G=H	9.3Vrms @G=L / 3.0Vrms @G=H
Gain	0dB @G=L / 9.5dB @G=H	-0.2dB @G=L / 9.3dB @G=H	6.0dB @G=L / 15.5dB @G=H	5.8dB @G=L / 15.3dB @G=H
Output Impedance	<0.1Ω	<0.1Ω	<0.2Ω	<0.2Ω
Load Impedance	>8Ω	>8Ω	>8Ω	>8Ω

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