TOPPING L70 - Fully Balanced Desktop Headphone Amplifier and Preamplifier - Black

Name: TOPPING L70 - Fully Balanced Desktop Headphone Amplifier and Preamplifier - Black
Brand: Topping
SKU: MG-TPPNG-L70-BLACK
Price: 216.99 EUR
Availability: InStock

Item number: MG-TPPNG-L70-BLACK

TOPPING L70 - Fully Balanced Desktop Headphone Amplifier and Preamplifier - Black

Item number: MG-TPPNG-L70-BLACK

IN STOCK!

Delivered to you within 4-5 days

216.99 Eur _(ex.VAT)

Points earned after purchase: 21.70 Eur

The TOPPING L70 is a fully balanced desktop headphone amplifier and analogue preamplifier built around NFCA amplifier modules. It combines high output power, low noise and a relay-based R2R volume control in a compact aluminium enclosure.

Its 4-pin XLR, 4.4 mm Pentaconn and 6.35 mm headphone outputs support a wide range of headphones and IEMs, with up to 2 × 7500 mW output power at 32 Ω through the balanced connection. Combo XLR/TRS and RCA analogue inputs allow straightforward integration with DACs, streamers and other line-level sources.

Variable RCA and XLR preamplifier outputs, individually stored output, volume and gain settings, 12 V Trigger connectivity and a GND/LIFT switch make the L70 a flexible control centre for desktop headphone setups, active speakers and separate power-amplifier systems.

Exact color

Black

Silver

Gift

Details
Data
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FULLY BALANCED NFCA HEADPHONE AMPLIFIER AND PREAMPLIFIER

TOPPING L70

The TOPPING L70 is a fully balanced desktop headphone amplifier and analogue preamplifier that delivers powerful yet quiet drive for everything from IEMs to full-size headphones. Its 4-pin XLR, 4.4 mm balanced and 6.35 mm single-ended outputs, XLR/TRS and RCA inputs, and variable line outputs bring a complete headphone system together in one central unit.

NFCA amplifier modulesUp to 2 × 7500 mW at 32 Ω4-pin XLR, 4.4 mm and 6.35 mmHeadphone amplifier and preamplifier modes

TOPPING L70 fully balanced NFCA headphone amplifier and preamplifier

AN ANALOGUE HUB FOR HEADPHONES AND ACTIVE SYSTEMS

The L70 sits after a DAC or other analogue source and drives headphones while precisely controlling the signal level. It does not include a built-in DAC or digital inputs, so it forms a complete system with a separate USB DAC, network player or other line-level source.

The unit accepts Combo XLR/TRS and RCA inputs, and can operate as a headphone amplifier, a preamplifier or both at the same time. Output mode, volume and gain settings can be stored individually for up to eight output configurations.

TOPPING L70 in black, front view — The compact aluminium enclosure places 4-pin XLR, 4.4 mm and 6.35 mm headphone outputs alongside a large control knob on the front panel.

2 × 7500 mWBalanced output at 32 Ω, THD+N <0.1%

146 dBMaximum specified dynamic range, A-weighted

<0.3 µVrmsLowest specified actual noise level at low gain

8 modesWith output, volume and gain memory

TOPPING L70 NFCA headphone amplifier module — NFCA, or Nested Feedback Composite Amplifier, combines voltage and current feedback within a single amplifier architecture.

NFCA MODULES FOR HIGH CURRENT DELIVERY AND LOW SELF-NOISE

The L70 uses the NFCA headphone amplifier modules familiar from the A90 family. The design is intended to provide stable drive for both low- and high-impedance headphones, while keeping background noise restrained with sensitive earphones.

The NFCA design combines hybrid voltage and current feedback with the UHGF, Ultra High Gain Feedback, principle. According to the manufacturer, the balanced output can achieve up to 146 dB of dynamic range under favourable signal conditions, while actual noise remains below 0.3 µVrms at low gain and output impedance stays below 0.2 Ω.

THREE HEADPHONE OUTPUTS, BROAD COMPATIBILITY

The front panel provides 4-pin XLR and 4.4 mm balanced connections alongside a 6.35 mm single-ended output. With the supplied adapter, headphones and earphones fitted with a 3.5 mm single-ended plug can also be used, covering the most common home headphone connections.

The balanced output is specified for up to 52 Vpp and 1.4 A peak current, while the single-ended output is specified for up to 26 Vpp. The low output impedance helps reduce the likelihood of a low-impedance headphone's impedance curve interacting with the amplifier and significantly altering frequency response.

TOPPING L70 4-pin XLR, 4.4 mm and 6.35 mm headphone outputs — The three front-panel outputs provide direct connection for balanced and single-ended headphones.

TOPPING L70 compatibility with different headphones and earphones — High voltage headroom matters for high-impedance headphones, high current delivery supports low-sensitivity designs, and low noise is equally important with sensitive IEMs.

TOPPING L70 THD+N and power measurement graph at 32 ohms — The graph shows the manufacturer's THD+N versus power measurement at a 32 Ω load, low gain, RCA input and 4-pin XLR output.

HIGH POWER WITH LOW DISTORTION

The L70's balanced output delivers up to 2 × 7500 mW at 32 Ω, providing substantial headroom for demanding planar magnetic and dynamic headphones. Its single-ended output is specified at 2 × 2300 mW at 32 Ω, which is ample for most conventional headphones.

The manufacturer's data sheet specifies a best-case THD+N figure below 0.000055% at 300 Ω and 80 mW, measured from a single-ended input to a balanced output. These figures are linked to specific measurement conditions, but indicate an amplifier designed for low self-noise and distortion alongside its power reserves.

SINGLE-ENDED OUTPUT2 × 3500 mW at 16 Ω, 2 × 2300 mW at 32 Ω and 2 × 290 mW at 300 Ω, with THD+N <0.1%.

BALANCED OUTPUT2 × 6000 mW at 16 Ω, 2 × 7500 mW at 32 Ω, 2 × 1150 mW at 300 Ω and 2 × 600 mW at 600 Ω, with THD+N <0.1%.

LOAD COMPATIBILITYThe manufacturer specifies load impedances above 8 Ω, while high output current supports the drive requirements of low-sensitivity headphones.

TWO GAIN LEVELS AND RELAY-BASED R2R VOLUME CONTROL

The L70 offers two gain settings, so sensitive IEMs and headphones that require more power can be handled by the same unit. Low gain allows finer adjustment over a wider usable volume range, while high gain provides more voltage and power headroom.

Gain is 6.0 or 19.8 dB through the balanced headphone output and 0 or 13.8 dB through the single-ended output. Volume control uses a relay-based resistor ladder R2R design, intended by TOPPING to provide precise steps, good channel balance and stable long-term operation.

TOPPING L70 two gain settings for balanced and single-ended outputs — The single-ended and balanced headphone outputs use different gain values, so the selected connection also determines the available amplification.

TOPPING L70 relay-based R2R volume control and custom output memory — The relay-based resistor-ladder volume control can remember individual volume and gain settings for every supported output mode.

TOPPING L70 preamplifier mode with active speakers or a power amplifier — In preamplifier mode, the L70 can control active speakers or a separate power amplifier via variable RCA and XLR line outputs.

HEADPHONE AMPLIFIER, PREAMPLIFIER OR BOTH AT ONCE

The L70 is not only for headphone listening. In preamplifier mode, its volume control also acts on the RCA and XLR line outputs, allowing direct connection to active speakers or a power amplifier and centralised volume control for the system.

Preamplifier output impedance is 20 Ω via RCA and 40 Ω via XLR, providing suitable matching for the inputs of most modern power amplifiers and active speakers. The output menu separately selects the three headphone outputs, RCA, XLR, both line outputs together, or simultaneous headphone and preamplifier operation.

TOPPING L70 with headphones and analogue cables connected — The L70 can simultaneously be the amplifier in a headphone chain and the analogue control centre for a variable-level active speaker system.

Start at a low volume in preamplifier mode

Before connecting active speakers or a power amplifier, set the volume to minimum and increase it gradually. The variable signal level of the line outputs directly affects the volume of the following amplification stage.

XLR, TRS AND RCA INPUTS IN ONE UNIT

The rear Combo connectors accept both XLR and 6.35 mm TRS plugs, with conventional RCA inputs alongside. This makes it easy to connect a DAC, phono preamplifier or other analogue source, even where balanced and single-ended components are combined in the same system.

The fully balanced amplifier architecture handles the differential signal path from input through to the balanced headphone and XLR preamplifier outputs. It can also be used with a single-ended source, though for the potential benefits of balanced connection, the source, cable and downstream component must all support the appropriate configuration.

TOPPING L70 Combo XLR TRS and RCA analogue inputs — The Combo inputs accept XLR or 6.35 mm TRS connections, while the RCA sockets accept conventional single-ended line-level connections.

TOPPING L70 GND LIFT switch for reducing ground-loop noise — The GND/LIFT switch may help break an unwanted ground path when a ground loop causes hum.

GND or LIFT?

The GND position is recommended for normal use. If hum or buzzing consistent with a ground loop occurs when several mains-powered components are connected, try the LIFT position. This switch is for managing the system's grounding arrangement, not for repairing a faulty or noisy component.

TOPPING L70 12 V Trigger input and output — The 12 V Trigger In and Out sockets support synchronised power-on and power-off with compatible DACs, preamplifiers, power amplifiers or active speakers.

12 V TRIGGER AND E70 VELVET SYSTEM INTEGRATION

With its 12 V Trigger input and output, the L70 can power on and off together with the other components in a compatible system. A simple 3.5 mm Trigger cable can be enough to let the DAC, amplifier or active speaker operate in synchronisation with the main device.

The L70 physically and functionally complements the TOPPING E70 VELVET DAC: the E70 VELVET converts digital sources, while the L70 supplies headphone amplification and, where needed, analogue preamplifier duties. This pairing is not exclusive, as the L70 can also be used with other DACs that provide a suitable line output.

TOPPING L70 and E70 VELVET stacked in a silver system — Stacked together, the L70 and E70 VELVET create a compact DAC and headphone amplifier system.

TOPPING L70 and E70 VELVET in a black system — In black, the TOPPING DAC and analogue amplifier form an equally coherent desktop system.

THE L70 AMONG TOPPING HEADPHONE AMPLIFIERS

TOPPING's original L70 comparison outlines the differing designs and functions of the L30 II, A30Pro, L50, L70 and A90 Discrete. They are not simple steps in the same price or power hierarchy: their inputs, outputs, preamplifier functions and amplifier architectures address different system requirements.

The L70's position is defined by its fully balanced design, three headphone outputs, RCA and XLR preamplifier outputs, and intelligent memory for individual output settings. The A90 Discrete offers higher specified power and discrete NFCA architecture, whereas the L70 brings a versatile central analogue role to the compact L series.

Model	Design and amplifier	Headphone outputs	System functions	Key distinction
L30 II	Single-ended, NFCA	6.35 mm	Single-ended input	Simple, single-output NFCA model
A30Pro	NFCA, balanced and single-ended inputs	6.35 mm, 4.4 mm, 4-pin XLR	Bypass mode	More headphone connections, without the L70's individual output memory
L50	Single-ended, NFCA	6.35 mm and 4-pin XLR	Bypass mode	Compact L series analogue headphone amplifier with a different output layout
L70	Fully balanced, NFCA	6.35 mm, 4.4 mm, 4-pin XLR	Preamplifier, 8 output memories, individual output selection, 12 V Trigger	Versatile analogue hub for headphones and active systems
A90 Discrete	Fully balanced, discrete NFCA	6.35 mm, 4.4 mm, 4-pin XLR	Preamplifier function	Higher specified balanced power and discrete NFCA architecture

The table reorganises the functions from TOPPING's original L70 comparison for easier reference. Current availability and pricing of individual models can vary by region, so the table is intended to explain technical and functional differences.

COMPACT METAL ENCLOSURE, TWO COLOUR OPTIONS

Measuring 200 × 138 × 44 mm, the L70 takes up little space on a desk or audio rack while keeping the front-panel connections and large volume control within easy reach. It is available in black and silver, making it easier to match with an existing DAC or desktop environment.

The compact footprint does not mean a simplified connection layout: the rear panel includes separate analogue inputs, RCA and XLR preamplifier outputs, a ground switch, Trigger sockets and mains power input. Leave adequate ventilation around the unit and route cables to keep the headphone outputs easily accessible.

TOPPING L70 in silver — The L70 in silver can form a visually consistent system with TOPPING's light-coloured desktop DACs.

TOPPING L70 dimensions 200 x 138 x 44 mm — L70 dimensions: 200 mm wide, 138 mm deep and 44 mm high.

SPECIFICATIONS

PRODUCT TYPE

Desktop headphone amplifier and analogue preamplifier

AMPLIFIER ARCHITECTURE

Fully balanced NFCA, Nested Feedback Composite Amplifier

ANALOGUE INPUTS

1 pair of Combo XLR/TRS and 1 pair of RCA

HEADPHONE OUTPUTS

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

3.5 MM COMPATIBILITY

Via the supplied 6.35 mm to 3.5 mm adapter

PREAMPLIFIER OUTPUTS

Balanced XLR and single-ended RCA

SINGLE-ENDED POWER

2 × 2300 mW at 32 Ω, THD+N <0.1%

BALANCED POWER

2 × 7500 mW at 32 Ω, THD+N <0.1%

HIGH-IMPEDANCE POWER

Single-ended: 2 × 290 mW at 300 Ω; balanced: 2 × 1150 mW at 300 Ω and 2 × 600 mW at 600 Ω

MAXIMUM OUTPUT VOLTAGE

Single-ended: 26 Vpp; balanced: 52 Vpp

PEAK CURRENT

1.4 A

GAIN, SINGLE-ENDED OUTPUT

0 dB or 13.8 dB

GAIN, BALANCED OUTPUT

6.0 dB or 19.8 dB

THD+N

Below 0.000055% at 1 kHz, under specified manufacturer test conditions

SIGNAL-TO-NOISE RATIO AND DYNAMIC RANGE

Up to 146 dB at 1 kHz, A-weighted

ACTUAL NOISE

As low as <0.3 µVrms, A-weighted, at low gain

OUTPUT IMPEDANCE

Single-ended: <0.1 Ω; balanced: <0.2 Ω

FREQUENCY RESPONSE

10 Hz - 100 kHz, depending on the selected input and output

RECOMMENDED LOAD IMPEDANCE

Above 8 Ω

VOLUME CONTROL

Relay-based resistor-ladder R2R volume control

OUTPUT MEMORY

8 headphone, preamplifier and combined output settings

GROUND-LOOP CONTROL

GND/LIFT switch

SYSTEM INTEGRATION

12 V Trigger In and Out, infrared remote control

DIMENSIONS

200 × 138 × 44 mm

COLOUR OPTIONS

Black and silver

WHAT'S IN THE BOX?

The factory package contains the accessories required for basic use of the L70. The unit comes with an infrared remote control, AC power cable and an adapter for using 3.5 mm headphones.

Choose the analogue interconnect, XLR or 4.4 mm headphone cable, and 3.5 mm Trigger control cable according to the connections on the selected source, headphones and speaker system.

TOPPING L70

1 × fully balanced NFCA headphone amplifier and preamplifier

REMOTE CONTROL

1 × infrared system remote control

POWER CABLE

1 × factory AC power cable

JACK ADAPTER

1 × 6.35 mm socket to 3.5 mm jack adapter

USER MANUAL

1 × factory user manual

WARRANTY CARD

1 × factory warranty document

Manufacturer

Topping

Exact color

Black

Model

L70

Hi-Res Audio

YES

Bluetooth

Volume control

Yes

Multi connect

Distortion

< 0.00006% @ 500mW, 32Ω ; < 0.000055% @ 80mW, 300Ω

EAN

6974268481656

Frequency response

10Hz-100kHz (±0.1dB)

Balanced

Yes

Professional Audio / Studio

Professional Audio / Musician

Signal to Noise ratio

143 decibels

Gain

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

Operating voltage

AC100V/AC240V, 50Hz/60Hz

Item number

MG-TPPNG-L70-BLACK

Weight

1.6 kg/piece

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