AUDIOPHONICS AP300-S125NC Power Amplifier Ncore NC122MP

AUDIOPHONICS AP300-S125NC Amplificateur de Puissance Class D Stéréo Ncore NC122MP 2x125W 4 Ohm
The Audiophonics AP300-S125NC is a stereo amplifier based on an amplification module Hypex Ncore NC122MP. This solution is ideal for anyone who wants to have a large power reserve (2x125W @ 4Ω) without sacrificing sound reproduction quality. This amplifier block will be suitable for example to accompany demanding speakers, to sound large listening rooms or for studio applications requiring a large headroom without compromising the accuracy and richness of the audio message.

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Shipping date: 27-02-2024.

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AUDIOPHONICS AP300-S125NC 

Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm

AUDIOPHONICS AP300-S125NC Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm

The Audiophonics AP300-S125NC is a stereo amplifier based on an amplification module Hypex Ncore NC122MP. This solution is ideal for anyone who wants to have a large power reserve (2x125W @ 4Ω) without sacrificing sound reproduction quality. This amplifier block will be suitable for example to accompany demanding speakers, to sound large listening rooms or for studio applications requiring a large headroom without compromising the accuracy and richness of the audio message.

All components are integrated in a simple and robust 100% Aluminium housing with openings to facilitate heat dissipation. Its design also allows it to limit the impact of interference on the signal.

Hypex Ncore NC122MP Amplification Board

The Audiophonics MPA-S125NC incorporates a Hypex Ncore NC122MP power amplifier module. This is a solid foundation on which to build a high-performance stereo HiFi system, capable of delivering 2x75W into 8Ω.

On a single double-sided PCB it consists of a low-power power supply for standby, a high-performance switching power supply, but above all an extremely efficient Class D amplifier circuit. The amplifier used on this NC122MP module offers a high efficiency of 92%, enabling it to be used for a wide variety of purposes, from studio use to integration in a hi-fi audio system.

Distinguishing features of this amplifier are its linear frequency response whatever the load impedance, and consequently its faithful reproduction, its very low distortion and also its very low EMI radiation rate.
The amplifier's control is based on a self-oscillating phase-shift loop, taking into account the response only at the loudspeaker output, always with a view to sound transparency.

This amplifier does not have a decoupling capacitor, so it lets the DC component of the signal through. Make sure your source has no DC component present at the output. The DC protection of the module switches on at 12VDC which is very permissive.

AUDIOPHONICS AP300-S125NC Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm

NCore Technology

NCore amplifiers are the first Class D amplifiers to approach the performance of operational amplifiers, but also to surpass them in terms of sound quality. As a result, they are able to deliver clear, rich, musical sound while remaining compact. This NCore technology combines the stability of the Hypex UcD series amplifiers with lower distortion and output impedance.

AUDIOPHONICS AP300-S125NC Amplificateur de Puissance Class D Stéréo Ncore NC122MP 2x125W 4 Ohm

SMPS Power Supply

The NC122MP module also integrates the amplification stage. This consists of a regulated half-bridge switching power supply (SMPS) with synchronous rectification on the main output rails. Compact, powerful and efficient, this power supply is particularly suitable for supplying a Class D amplifier cleanly.

In addition, to offer complete compatibility with the voltages delivered by the various electrical networks, the power supply is equipped with an automatic input voltage doubler. The NC122MP module also has an overload protection system.

AUDIOPHONICS AP300-S125NC Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm

Connectivity

The AP300-S125NC amplifier features a 2-pole stereo RCA input on gold-plated sockets, plus a 3-pole stereo XLR input for balanced signal processing. The XLR or RCA input source is selected via two switch buttons (right and left channel). The amplifier output is made on Elecaudio BP-209 24k gold-plated speaker terminals. They also accept banana plugs or spades for quick and easy connection. A 5-12V trigger connector in 3.5mm Jack format allows to control the automatic ignition of the amplifier when integrated in a compatible system. Finally, a bistable button is used to switch the unit on and off.

AUDIOPHONICS AP300-S125NC Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm

100% Aluminum Case and clean lines

The Hypex NCore NC122MP amplifier is housed in a 100% black brushed aluminum case. The thick walls of this elegantly-finished case are highly resistant, providing the components with the protection they need. The natural conduction of aluminum, together with a carefully designed air flow, helps dissipate the heat generated by the module. In addition, the acrylic front panel is screen-printed with the Audiophonics logo, and the rear with the nomenclature of each input/output. Its compact size makes it easy to integrate into any audiophile installation, offering high performance in a small space.

AUDIOPHONICS AP300-S125NC Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm

Technical characteristics

INDICATIVE COMPATIBILITY TABLE
Specifications
Product typeAmplifier
ClassD
Number of channelStereo (2)
Max. power (@ 1kHz, THD=1%)2x75W @ 8Ω
2x125W @ 4Ω
2x115W @ 2Ω
Inputs1x RCA Stéréo Asymétrique
1x XLR Stéréo Symétrique
OutputsSpeaker terminals
Trigger5-12V
THD+N0.0015%
SNR118dB
Output noise30µV
Output impedance1.5mΩ
Frequency response10Hz - 50kHz
Efficiency92%
Input sensitivity125W 4ohm @ 1.17V RMS
General
Supply voltage230V / 110V (automatic switch)
Case materialBrusched aluminum
Dimensions300 x 220 x 65mm
Weight1930g
ColorBlack
Package1x Audiophonics AP300-S125NC
1x Power cable
 
Data sheet
InputXLR
InputRCA
OutputSpeaker terminal
ColorBlack
Channel2 (Stereo)
ClassClass D / T
Amplifier chipHypex Ncore
Power (W)125.0
Remote ControlNo
 
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AUDIOPHONICS AP300-S125NC Class D Stereo Power Amplifier Ncore NC122MP 2x125W 4 Ohm
The Audiophonics AP300-S125NC is a stereo amplifier based on an amplification module Hypex Ncore...

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