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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

Stock due late August

Silver

£599.00

Black

£599.00

Please see our revised delivery schedules for the Bank Holiday period here

Standard Items (DPD)

Usually bookshelf speakers*

Standard Deliveries Order by 3pm Mon-Fri	Free 2 Weekday Delivery
Express Deliveries Order by 3pm Mon-Fri	Next Weekday or Choose-a-Day Standard - £10 for the first box + £3 per additional box Next Weekday or Choose-a-Day Pre-12pm Noon - £15 for the first box + £3 per additional box
Weekend Deliveries Order by 3pm Friday	Saturday or Sunday - £15 for the first box + £3 per additional box
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	2 Weekday Remote Service - £20 for first 2 items + £9 per additional box 2 to 5 Weekday Off-Shore Service - £30 for first 2 items + £9 per additional box

Medium Sized Items (DPD Freight & FedEx)

Usually TVs under 60" or £1000, and most floorstanding speakers*

Standard Deliveries Order by 3pm Mon-Fri	Free 2 Weekday Delivery
Express Deliveries Order by 3pm Mon-Fri	DPD Freight - Next Weekday or Choose-a-Day Delivery - £20 per box FedEx - Next Weekday or Choose-a-Day Delivery - £20 per box
Weekend Deliveries Order by 3pm Friday	DPD Freight - Saturday or Sunday Delivery - £35 per box FedEx - Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	DPD Freight - 2 Weekday Remote Service - £20 for first 2 boxes + £9 per additional box DPD Freight - 2 to 5 Weekday Off-Shore Service - £30 for first 2 boxes + £9 per additional box FedEx - Remote deliveries unavailable

Large or Heavy Items (ArrowXL & BJS)

Usually TVs over 60" or £1000, and heavy separates over 35kg*

Standard Deliveries Order by 3pm Mon-Fri	ArrowXL - Free Diary Booking Service (2 Weekday Minimum) BJS - Free 3 to 5 Weekday
Express Deliveries Order by 3pm Mon-Fri	ArrowXL - Next Weekday Delivery - £10 per box BJS - Express deliveries unavailable
Weekend Deliveries Order by 3pm Friday	ArrowXL - Saturday Delivery - £15 per box BJS - Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	Unfortunately, delivery of these product types is not available to remote locations

Pallet Sized Items (Palletforce)

Usually large/high-end floorstanding speakers or subs*

Standard Deliveries Order by 3pm Mon-Fri	2 Weekday Kerbside Delivery - £50 per item
Express Deliveries Order by 3pm Mon-Fri	Express deliveries unavailable
Weekend Deliveries Order by 3pm Friday	Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	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.

	Standard Items* DPD	Medium Sized Items* DPD Freight & FedEx	Large or Heavy Items* ArrowXL & BJS (2-Man Delivery)	Pallet Sized Items* Palletforce
Standard Deliveries Order by 3pm Mon-Fri	Free 2 Weekday Delivery	Free 2 Weekday Delivery	ArrowXL - Free Diary Booking Service (2 Weekday Minimum) BJS - Free 3 to 5 Weekday	2 Weekday Kerbside Delivery - £50 per item
Express Deliveries Order by 3pm Mon-Fri	Next Weekday or Choose-a-Day Standard - £10 for the first box + £3 per additional box Next Weekday or Choose-a-Day Pre-12pm Noon - £15 for the first box + £3 per additional box	DPD Freight - Next Weekday or Choose-a-Day Delivery - £20 per box FedEx - Next Weekday or Choose-a-Day Delivery - £20 per box	ArrowXL - Next Weekday Delivery - £10 per box BJS - Express deliveries unavailable	Express deliveries unavailable
Weekend Deliveries Order by 3pm Friday	£15 for the first box + £3 per additional box	DPD Freight - Saturday or Sunday Delivery - £35 per box FedEx - Weekend deliveries unavailable	ArrowXL - Saturday Delivery - £15 per box (via Diary Booking Service) BJS - Weekend deliveries unavailable	Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	2 Weekday Remote Service - £20 for first 2 boxes + £9 per additional box 2 to 5 Weekday Off-Shore Service - £30 for first 2 boxes + £9 per additional box	DPD Freight - 2 Weekday Remote Service - £20 for first 2 boxes + £9 per additional box DPD Freight - 2 to 5 Weekday Off-Shore Service - £30 for first 2 boxes + £9 per additional box FedEx - Remote deliveries unavailable	Unfortunately, delivery of these product types is not available to remote locations	Unfortunately, delivery of these product types is not available to remote locations

*See below most common product types for each delivery service, this is not exclusive to only these product types. Product value, weight, and fragility can influence the courier service used.

DPD: Usually Bookshelf Speakers
DPD Freight & FedEx: Usually TVs under 60" or £1000, and most floorstanding speakers
ArrowXL & BJS: Usually TVs over 60" or £1000, and heavy hi-fi separates over 35kg
Palletforce: Usually large/high-end floorstanding speakers or subs

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.

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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CATEGORY_INFO	Allows pages to be displayed more quickly.	1 Year
COMPARE	The items that you have in the Compare Products list.	1 Year
CUSTOMER	An encrypted version of your customer id.	1 Year
CUSTOMER_AUTH	An indicator if you are signed into the store.	1 Year
CUSTOMER_INFO	An encrypted version of the customer group you belong to.	1 Year

Name	Description	Lifetime
CUSTOMER_SEGMENT_IDS	Stores your Customer Segment ID	1 Year
EXTERNAL_NO_CACHE	A flag that, indicates whether caching is on or off.	1 Year
FRONTEND	Your session ID on the server.	1 Year
GUEST-VIEW	Allows guests to edit their orders.	1 Year
LAST_CATEGORY	The last category you visited.	1 Year
LAST_PRODUCT	The last product you looked at.	1 Year
NEWMESSAGE	Indicates whether a new message has been received.	1 Year
NO_CACHE	Indicates whether it is allowed to use cache.	1 Year
PERSISTENT_SHOPPING_CART	A link to information about your cart and viewing history if you have asked the site.	1 Year

Name	Description	Lifetime
RECENTLYCOMPARED	The items you recently compared.	1 Year
STF	Information on products you emailed to friends.	1 Year
STORE	The store view or language you have selected.	1 Year
USER_ALLOWED_SAVE_COOKIE	Indicates whether a customer authorized cookies.	1 Year
VIEWED_PRODUCT_IDS	The products that you recently looked at.	1 Year
WISHLIST	An encrypted list of products added to your wish list.	1 Year
WISHLIST_CNT	The number of items in your wish list.	1 Year

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Topping A90 Discrete Balanced Headphone Amplifier - Black

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Standard Items (DPD)

Medium Sized Items (DPD Freight & FedEx)

Large or Heavy Items (ArrowXL & BJS)

Pallet Sized Items (Palletforce)

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Topping A90 Discrete Balanced Headphone Amplifier - Black

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A90 Discrete Headphone Amplifier

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