TOPPING A70 PRO - Fully Balanced Headphone Amplifier and Preamplifier - Black

Name: TOPPING A70 PRO - Fully Balanced Headphone Amplifier and Preamplifier - Black
Brand: Topping
SKU: MG-TPPNG-A70PRO-BLACK
Price: 477.94 EUR
Availability: InStock

N° d’article: MG-TPPNG-A70PRO-BLACK

TOPPING A70 PRO - Fully Balanced Headphone Amplifier and Preamplifier - Black

N° d’article: MG-TPPNG-A70PRO-BLACK

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The TOPPING A70 Pro is a high-power, fully balanced desktop headphone amplifier and analogue preamplifier. Built around T'ang-ku-la amplifier modules, it combines substantial output reserves with low self-noise for sensitive IEMs as well as demanding dynamic and planar magnetic headphones.

The front panel provides 4-pin XLR, 4.4 mm Pentaconn and 6.35 mm headphone outputs. Relay-based R2R volume control, two gain settings and independent output volume memory provide precise, convenient control when using different headphones and listening setups.

Balanced XLR and RCA inputs, variable XLR and RCA preamplifier outputs, 12 V Trigger control and the optional EXT90 input expander allow the A70 Pro to serve as the analogue hub of a headphone chain or active speaker system. Its colour Aurora display also offers selectable VU meter and spectrum analyser views alongside system settings.

Exact color

Black

Silver

Cadeau

Détails
Info
Opinions

FULLY BALANCED HEADPHONE AMPLIFIER AND ANALOGUE PREAMPLIFIER

TOPPING A70 PRO

The TOPPING A70 Pro is a high-power, fully balanced desktop headphone amplifier and analogue preamplifier. Its T'ang-ku-la amplifier modules, relay-based R2R volume control, colour Aurora interface, and 4-pin XLR, 4.4 mm and 6.35 mm headphone outputs make it a central component for sensitive IEMs, demanding full-size headphones and active speaker systems.

T'ang-ku-la amplifier modulesUp to 2 × 17,000 mW at 16 Ω147 dB dynamic rangeHeadphone amplifier and preamplifier

TOPPING A70 Pro fully balanced headphone amplifier and preamplifier

AN ANALOGUE HUB BETWEEN DAC AND HEADPHONES

The A70 Pro sits after a DAC or another line-level analogue source. It has no digital inputs or built-in DAC, so a computer, network player, CD transport or television first connects to a separate DAC, while the A70 Pro amplifies the resulting analogue signal for headphones.

The unit provides one balanced XLR input and one single-ended RCA input. In addition to its three headphone connections, it includes variable RCA and XLR preamplifier outputs, allowing it to serve as the central analogue component in a headphone chain, an active speaker system or a setup with a separate power amplifier.

TOPPING A70 Pro front panel and rear connections — The front panel houses three headphone outputs, the display and control knob, while the rear panel contains analogue inputs, preamplifier outputs and system control connections.

2 × 17,000 mWBalanced output at 16 Ω, THD+N <0.1%

147 dBMaximum specified dynamic range, 1 kHz, A-weighted

<0.2 µVrmsActual noise level at low gain, single-ended headphone output

8 memoriesSeparate volume and output settings for supported modes

TOPPING A70 Pro T'ang-ku-la amplifier module — T'ang-ku-la is TOPPING's amplifier module designed for high power and low noise, using a three-stage feedback circuit.

T'ANG-KU-LA MODULES FOR HIGH POWER AND LOW NOISE

The A70 Pro is built around TOPPING's T'ang-ku-la amplifier modules. The manufacturer uses a new three-stage feedback circuit intended to further reduce high-frequency distortion and self-noise while retaining substantial load-driving capability at the headphone output.

The module design also aims to reduce heat generation. According to TOPPING, this provides more favourable operating conditions for electronic components and helps preserve low-noise amplifier operation over extended use.

TOPPING A70 Pro re-optimised amplifier circuit — The new input stage is designed for lower noise, a higher 20 kΩ input impedance and improved performance at high gain.

HIGH POWER ACROSS A WIDE IMPEDANCE RANGE

The A70 Pro's balanced output delivers up to 2 × 17,000 mW into a 16-ohm load. This provides substantial headroom for low-sensitivity planar magnetic and dynamic headphones, while also supplying the voltage required by 300- or 600-ohm designs.

High power is also available through the single-ended headphone output, so conventional headphones using a 6.35 mm connection do not require a separate amplifier. The manufacturer specifies load impedances above 8 Ω, covering the most common headphone and IEM loads.

TOPPING A70 Pro in a desktop headphone system — High output reserves provide useful headroom for listening volume and dynamic peaks with larger, more demanding headphones.

SINGLE-ENDED OUTPUT2 × 6000 mW at 16 Ω, 2 × 3000 mW at 32 Ω, 2 × 1550 mW at 64 Ω, 2 × 330 mW at 300 Ω and 2 × 165 mW at 600 Ω, with THD+N <0.1%.

BALANCED OUTPUT2 × 17,000 mW at 16 Ω, 2 × 12,600 mW at 32 Ω, 2 × 6000 mW at 64 Ω, 2 × 1370 mW at 300 Ω and 2 × 670 mW at 600 Ω, with THD+N <0.1%.

OUTPUT VOLTAGEUp to 28 Vpp through the single-ended headphone output and up to 56 Vpp through the balanced headphone output, depending on input mode and gain setting.

TOPPING A70 Pro low-noise operation — According to TOPPING, actual noise remains below 0.2 µVrms at low gain and below 0.8 µVrms at high gain through the single-ended headphone output.

LOW NOISE FOR SENSITIVE EARPHONES TOO

High power alone is not enough when using sensitive earphones. The A70 Pro's two gain settings allow a wider, finer usable volume range at low gain while maintaining the low actual noise figures specified by the manufacturer.

TOPPING specifies a 106.3 dB dynamic range at a 50 mV output voltage. This low-level measurement indicates that the A70 Pro is designed to pursue low self-noise not only at high power, but also with sensitive earphones and lower listening levels.

RELAY-BASED R2R VOLUME CONTROL AND TWO GAIN LEVELS

The A70 Pro volume control uses relays and a resistor network in an R2R arrangement. This construction is intended to provide precise steps, strong channel balance and stable long-term operation. It is particularly useful at low volume, where channel mismatch can be more noticeable with conventional potentiometers.

Depending on the signal path, gain through the balanced headphone output is 6.0 or 19.8 dB, while single-ended output gain is 0 or 13.8 dB. Low gain suits sensitive IEMs and easily driven headphones, while high gain provides more headroom for models with greater power requirements.

TOPPING A70 Pro relay-based R2R volume control — The relay-based resistor network adjusts volume in a series of precise steps.

TOPPING A70 Pro control knob — Beyond volume adjustment, short and long presses of the central control knob provide access to menu functions.

TOPPING A70 Pro independent volume memory — The A70 Pro can store individual volume values for eight supported output situations and restore them when that output is selected.

INDIVIDUAL VOLUME MEMORY FOR EACH SYSTEM SITUATION

The A70 Pro does not rely on one global volume setting. It can separately remember headphone amplifier plus preamplifier operation, all headphone outputs, preamplifier outputs, and individual use of the 6.35 mm, 4.4 mm, XLR, RCA and XLR line outputs.

In practice, if sensitive IEMs, a large headphone and active speakers require different listening levels, the A70 Pro can restore the last used value when outputs are changed. This does not replace careful volume handling, but makes daily use quicker and more organised.

TOPPING A70 Pro RC-16A remote control with C1 and C2 memory — Holding the RC-16A remote's C1 or C2 button for three seconds saves a complete system state, which can later be recalled with one press.

AURORA INTERFACE, VU AND FFT VIEWS

The Aurora interface combines a large colour display with three touch buttons. In addition to volume, gain, input and output mode, several visual views can be selected, including a VU meter and FFT spectrum. These do not alter the sound, but make the operating state and musical signal easier to follow visually.

Custom shortcuts are available through a long press of the control knob, and Chinese or English can be selected as the user-interface language on first start-up. The menu system is designed so that routine adjustments do not require a computer or separate app.

TOPPING A70 Pro Aurora user interface — The Aurora UI provides a quick overview of the active output mode, volume, gain and other system settings.

TOPPING A70 Pro VU meter display view — The selectable VU meter view presents the music signal level in a form reminiscent of analogue meters.

TOPPING A70 Pro with EXT90 input expansion module — The optional EXT90 expands the A70 Pro to a total of four balanced XLR and two single-ended RCA input pairs.

EXPANDABLE INPUTS FOR MORE ANALOGUE SOURCES

In its standard configuration, the A70 Pro provides one XLR and one RCA analogue input pair. This can accommodate a DAC and another analogue source, such as a phono preamplifier or other component, while keeping the system simple and easy to understand.

Where several DACs, analogue players or separate component chains need to be connected, the optional EXT90 input expander provides four XLR and two RCA input pairs. The EXT90 is sold separately, so expansion is only necessary when the standard input count is no longer sufficient.

TOPPING A70 Pro GND LIFT ground-loop switch — The GND/LIFT switch can help interrupt an unwanted grounding path if a ground loop causes hum.

GND or LIFT?

GND is recommended for normal use. If several mains-powered components produce ground-loop hum after being connected together, try the LIFT position. This switch manages the system's grounding arrangement and is not intended to repair a faulty component.

HEADPHONE AMPLIFIER, PREAMPLIFIER OR BOTH TOGETHER

The A70 Pro can also operate as a preamplifier, so its analogue volume control acts on the rear RCA and XLR line outputs. This allows direct control of active speakers or a separate power amplifier, while headphone output remains available according to the selected output mode.

Preamplifier output impedance is 50 Ω through RCA and 100 Ω through XLR. These values support suitable matching with the inputs of most modern active speakers and power amplifiers. Set volume low before connecting a downstream component, then increase it gradually because the preamplifier output directly controls the following component's volume.

TOPPING A70 Pro preamplifier mode with active speakers — In preamplifier mode, the A70 Pro can control active speakers or a separate power amplifier through variable RCA and XLR line outputs.

TOPPING A70 Pro in a modern desktop audio system — The A70 Pro can bring headphone and active-speaker use together in one variable analogue control centre.

TOPPING A70 Pro and D70 Pro SABRE stacked system — The D70 Pro SABRE handles digital-to-analogue conversion, while the A70 Pro provides headphone amplification and analogue preamplifier duties.

D70 PRO SABRE PARTNER AND 12 V TRIGGER

The A70 Pro matches the TOPPING D70 Pro SABRE DAC in both design language and function. The DAC handles USB, S/PDIF, Bluetooth or other digital sources, while the A70 Pro turns its balanced analogue signal into the power required by headphones or an active system. This pairing is not exclusive, as the A70 Pro can be used with any suitable line-output DAC.

Its 12 V Trigger In and Out connections allow compatible components to switch on and off together. The A70 Pro can follow another component's Trigger signal or actively control further compatible devices.

TOPPING A70 Pro 12 V Trigger input and output — Trigger In and Out support synchronised operation with a compatible DAC, preamplifier, power amplifier or active speaker.

CLEAN ENCLOSURE, TWO COLOUR OPTIONS

Measuring 222 × 176 × 48 mm, the A70 Pro has a larger footprint than the compact L series models. In return, it accommodates additional inputs, a large display and substantial output reserves in a single metal enclosure. The front outputs, touch buttons and control knob remain easy to reach in daily use.

Black and silver finishes make it easier to match the A70 Pro with an existing TOPPING DAC or another desktop component. Leave enough room for ventilation and for the bend radius of rear XLR, RCA, Trigger and power cables.

TOPPING A70 Pro black finish — The black finish provides a cohesive appearance in a dark desktop or rack system.

TOPPING A70 Pro in a premium desktop environment — The wider enclosure accommodates the high-power amplifier stage, display and multiple connection options.

SPECIFICATIONS

The figures below are taken from the manufacturer's specifications. Distortion, noise, signal-to-noise ratio and dynamic-range values are tied to selected input, output, load, gain and measurement conditions, so they can only be compared directly under matching test conditions.

PRODUCT TYPE

Fully balanced desktop headphone amplifier and analogue preamplifier

AMPLIFIER ARCHITECTURE

T'ang-ku-la module with three-stage feedback circuit

ANALOGUE INPUTS

1 pair of balanced XLR and 1 pair of single-ended RCA

EXPANDABLE INPUTS

Up to 4 XLR pairs and 2 RCA pairs with the optional EXT90 module

HEADPHONE OUTPUTS

4-pin XLR, 4.4 mm Pentaconn and 6.35 mm jack

PREAMPLIFIER OUTPUTS

Balanced XLR and single-ended RCA, with variable signal level

SINGLE-ENDED POWER

2 × 3000 mW at 32 Ω, 2 × 330 mW at 300 Ω and 2 × 165 mW at 600 Ω, THD+N <0.1%

BALANCED POWER

2 × 17,000 mW at 16 Ω, 2 × 12,600 mW at 32 Ω, 2 × 1370 mW at 300 Ω and 2 × 670 mW at 600 Ω, THD+N <0.1%

OUTPUT VOLTAGE

Single-ended: up to 28 Vpp; balanced: up to 56 Vpp, depending on signal path and gain setting

GAIN, SINGLE-ENDED OUTPUT

0 dB or 13.8 dB, depending on input signal path

GAIN, BALANCED OUTPUT

6.0 dB or 19.8 dB, depending on input signal path

THD+N

As low as <0.000055% at 1 kHz in headphone-amplifier mode, under specified manufacturer test conditions

SIGNAL-TO-NOISE RATIO AND DYNAMIC RANGE

Up to 147 dB at 1 kHz, A-weighted, in balanced output measurement

ACTUAL NOISE

Single-ended headphone output: <0.2 µVrms at low gain and <0.8 µVrms at high gain, A-weighted

OUTPUT IMPEDANCE

Headphone output: single-ended <0.1 Ω, balanced <0.2 Ω; preamplifier output: RCA 50 Ω, XLR 100 Ω

FREQUENCY RESPONSE

20 Hz - 40 kHz, ±0.05 or ±0.1 dB depending on the selected signal path

RECOMMENDED LOAD IMPEDANCE

Above 8 Ω

VOLUME CONTROL

Relay-based resistor-ladder R2R volume control

OUTPUT MEMORY

8 individual volume and output configurations

DISPLAY AND CONTROL

Colour Aurora display, 3 touch buttons, central control knob and RC-16A infrared remote control

GROUND-LOOP CONTROL

GND/LIFT switch

SYSTEM INTEGRATION

12 V Trigger In and Out

DIMENSIONS

222 × 176 × 48 mm

WHAT’S IN THE BOX?

The factory package contains the accessories required for basic use of the A70 Pro. Alongside the unit are a remote control, AC power cable, 6.35 mm to 3.5 mm adapter and warranty card.

Choose analogue RCA or XLR interconnects, a 3.5 mm Trigger control cable, and headphone or active-speaker cables according to the connections on the other components in the system. The EXT90 input expansion module is sold separately.

TOPPING A70 PRO

1 × fully balanced headphone amplifier and analogue preamplifier

REMOTE CONTROL

1 × RC-16A infrared system remote control

POWER CABLE

1 × factory AC power cable

JACK ADAPTER

1 × 6.35 mm socket to 3.5 mm jack adapter

WARRANTY CARD

1 × factory warranty document

NOT INCLUDED

RCA or XLR interconnects, Trigger cable, EXT90 module, headphones and speaker cables

Manufacturer

Topping

Exact color

Black

Model

A70PRO

Jack

6.35mm, 4.4mm

Hi-Res Audio

YES

Bluetooth

Package contents

A70 Pro, RC-18A remote control, EU (F-Type) and IEC (C13) power cable, 6.35mm adapter

Volume control

Yes

Remote controller

Topping RC-18A (in the package)

Multi connect

Distortion

<0.000065% @ Output=500mW (32Ohm)

EAN

6974268482714

Frequency response

20Hz - 40kHz (±0.05dB)

Max output power

Power: 12600mW x 2 @32 Ohm (THD+N <0.1%)

Balanced

Yes

Professional Audio / Studio

Professional Audio / Musician

Signal to Noise ratio

143 decibels

Channel separation

-123dB

Gain

0dB @ G=L ; 13.8dB @ G=H

Connectors

Input: RCA, XLR BAL ; Output: RCA, XLR BAL, XLR 4-pin, 4.4mm BAL, 6.35mm SE

Operating voltage

AC100V/AC240V, 50Hz/60Hz

N° d’article

MG-TPPNG-A70PRO-BLACK

Poids

2,1 kg/piece

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