Topping A70Pro Headphone Amplifier - Silver

Name: Topping A70Pro Headphone Amplifier - Silver
Brand: Topping
SKU: A70PROSILVER
Price: 499 GBP
Availability: InStock

Stock due 3 to 5 days

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 A70 Pro drives headphones well, and has the same high performance in the headphone amp mode, as well as a preamp stage with an RCA output impedance of only 50Ω and an XLR output impedance of only 100Ω, allowing it to be used with a wide range of input impedance for various power amplifiers

A70 Pro Headphone Amplifier Specfications
	SE IN/SE OUT	BAL IN/SE OUT	SE IN/BAL OUT	BAL IN/BAL OUT
THD+N @ 1kHz (A-wt)	<0.000065% @ Output=500mW (32Ω) < 0.000055% @ Output=80mW (300Ω)
THD @ 20-20kHz (90kBW)	<0.00006% @ Output=500mW (32Ω) <0.00005% @ Output=80mW (300Ω)	<0.00006% @ Output=500mW (32Ω) <0.00006% @ Output=80mW (300Ω)	<0.00006% @ Output=2000mW (32Ω) <0.00005% @ Output=320mW (300Ω)	<0.00006% @ Output=2000mW (32Ω) <0.00005% @ Output=320mW (300Ω)
SNR @MAX OUT 1kHz (A-wt)	143dB	140dB	147dB	142dB
Dynamic Range @1kHz (A-wt)	143dB	140dB	147dB	142dB
Frequency Response	20Hz–40kHz (±0.05dB)	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.05dB)	20Hz–40kHz (±0.1dB)
Output Level	28Vpp @ G=L 27.6Vpp G=H	27.2Vpp @ G=L 27.6Vpp G=H	56Vpp @ G=L 54Vpp G=H	54Vpp @ G=L 54Vpp G=H
AP measured noise level (A-wt)	<0.7uVrms @G=L <1.0uVrms @G=H	<0.7uVrms @G=L <1.0uVrms @G=H	<0.9uVrms @G=L <1.9uVrms @G=H	<0.9uVrms @G=L <1.9uVrms @G=H
*Actual noise level (A-wt)**	<0.2uVrms @G=L <0.8uVrms @G=H	<0.2uVrms @G=L <0.8uVrms @G=H	<0.6uVrms @G=L <1.8uVrms @G=H	<0.6uVrms @G=L <1.8uVrms @G=H
Channel Crosstalk @1kHz	-123dB	-124dB	-122dB	-133dB
Input sensitivity	10.3Vrms @G=L 2.0Vrms @G=H	9.8Vrms @G=L 2.0Vrms @G=H	10.3Vrms @G=L 2.0Vrms @G=H	9.8Vrms @G=L 2.0Vrms @G=H
Gain	0dB @G=L 13.8dB @G=H	0dB @G=L 13.9dB @G=H	6.0dB @G=L 19.8dB @G=H	6.0dB @G=L 19.9dB @G=H
Output Impedance	< 0.1Ω	< 0.1Ω	< 0.2Ω	< 0.2Ω
Output Power	6000mW x2 @ 16Ω THD+N<0.1% 3000mW x2 @ 32Ω THD+N<0.1% 1550mW x2 @ 64Ω THD+N<0.1% 330mW x2 @ 300Ω THD+N<0.1% 165mW x2 @ 600Ω THD+N<0.1%	6000mW x2 @ 16Ω THD+N<0.1% 3000mW x2 @ 32Ω THD+N<0.1% 1550mW x2 @ 64Ω THD+N<0.1% 330mW x2 @ 300Ω THD+N<0.1% 165mW x2 @ 600Ω THD+N<0.1%	17000mW x2 @ 16Ω THD+N<0.1% 12600mW x2 @ 32Ω THD+N<0.1% 6000mW x2 @ 64Ω THD+N<0.1% 1370mW x2 @ 300Ω THD+N<0.1% 670mW x2 @ 600Ω THD+N<0.1%	17000mW x2 @ 16Ω THD+N<0.1% 12600mW x2 @ 32Ω THD+N<0.1% 6000mW x2 @ 64Ω THD+N<0.1% 1370mW x2 @ 300Ω THD+N<0.1% 670mW x2 @ 600Ω THD+N<0.1%
Load Impedance	>8Ω

*Note: The actual noise level is obtained by boosting the noise of A70 Pro by 40dB using a low noise amplifier in front of the APx555B then dividing the measured noise by 100 times.

A70 Pro Headphone Pre-amplifier Specfications
	SE IN/SE OUT	BAL IN/SE OUT	SE IN/BAL OUT	BAL IN/BAL OUT
THD+N @ 1kHz (A-wt)	<0.000055%
THD @ 20-20kHz (90kBW)	<0.00005%
SNR @MAX OUT 1kHz (A-wt)	143dB	140dB	147dB	142dB
Dynamic Range @1kHz (A-wt)	143dB	140dB	147dB	142dB
Frequency Response	20Hz–40kHz (±0.05dB)	20Hz–40kHz (±0.1dB)	20Hz–40kHz (±0.05dB)	20Hz–40kHz (±0.1dB)
Output Level	28Vpp @ G=L 27.6Vpp G=H	27.2Vpp @ G=L 27.6Vpp G=H	56Vpp @ G=L 54Vpp G=H	54Vpp @ G=L 54Vpp G=H
AP measured noise level (A-wt)	<0.7uVrms @G=L <1.0uVrms @G=H	<0.7uVrms @G=L <1.0uVrms @G=H	<0.9uVrms @G=L <1.9uVrms @G=H	<0.9uVrms @G=L <1.9uVrms @G=H
*Actual noise level (A-wt)**	<0.2uVrms @G=L <0.8uVrms @G=H	<0.2uVrms @G=L <0.8uVrms @G=H	<0.6uVrms @G=L <1.8uVrms @G=H	<0.6uVrms @G=L <1.8uVrms @G=H
Channel Crosstalk @1kHz	-119dB	-123dB	-118dB	-125dB
Input sensitivity	10.3Vrms @G=L 2.0Vrms @G=H	9.8Vrms @G=L 2.0Vrms @G=H	10.3Vrms @G=L 2.0Vrms @G=H	9.8Vrms @G=L 2.0Vrms @G=H
Gain	0dB @G=L 13.8dB @G=H	0dB @G=L 13.9dB @G=H	6.0dB @G=L 19.8dB @G=H	6.0dB @G=L 19.9dB @G=H
Output Impedance	< 50Ω	< 50Ω	< 100Ω	< 100Ω

*Note: The actual noise level is obtained by boosting the noise of A70 Pro by 40dB using a low noise amplifier in front of the APx555B then dividing the measured noise by 100 times.

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Topping A70Pro Headphone Amplifier - Silver

Standard Items (DPD)

Medium Sized Items (DPD Freight & FedEx)

Large or Heavy Items (ArrowXL & BJS)

Pallet Sized Items (Palletforce)

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