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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.

The Audiophonics AP300-S500NC is a stereo power amplifier based on an amplification module Hypex Ncore NC502MP. This solution is ideal for anyone who wants to have a large power reserve (2x500W @ 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.
The amplification circuit uses a Hypex Ncore NC502MP module. This is a versatile high-performance Class D amplifier which offers a tremendous power of 2x500W under a 4Ω load while taking advantage of Class D amplifiers high efficiency.
Its main characteristics are its flat frequency response regardless of load impedance, its almost frequency-independent distortion level and its ability to reject EMI interference. Its operation is based on a self-oscillating loop controlled by phase shift which does not take feedback into account except at the speaker output level.

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.

The NC502MP module also integrates its own power stage. It consists of a regulated half-bridge switching power supply (SMPS) with synchronous rectification on its main output rails. Compact, powerful and efficient, this power supply is particularly suitable to provide clean power to a Class D amplifier.
Its power supply can work with different voltages delivered by the various electrical networks, the power supply is indeed equipped with an automatic input voltage doubler. The NC502MP module also has an overload protection system.

The AP300-S500NC 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.

The Hypex NCore NC502MP 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.

Technical characteristics
| Specifications | |
|---|---|
| Product type | Amplifier |
| Amplification type | Class D |
| Number of channel | Stereo (2) |
| Max. power (@ 1kHz, THD=1%) | 2x350W @ 8Ω 2x500W @ 4Ω 2x450W @ 2Ω |
| Input | 1x Single Ended Stereo RCA 1x Balanced Stereo XLR |
| Output | Speaker terminals |
| Trigger | 5-12V |
| THD+N | 0.0018% |
| SNR | 124dB |
| Output noise | 47µV |
| Output impedance | 1.5mΩ |
| Frequency response | 10Hz - 48kHz |
| Efficiency | 92% |
| Input sensitivity | Max Power at 2.35V RMS XLR : 2x1.17V RMS RCA : 1.17V RMS |
| General | |
|---|---|
| Supply voltage | 230V / 110V (automatic switch) |
| Case material | Brushed Aluminium |
| Total dimensions (WxDxH) | 300 x 248 x 62mm |
| Weight | 2080g |
| Color | Black |
| Package | 1x Audiophonics AP300-S500NC 1x Power cable |
| Input | XLR |
| Input | RCA |
| Output | Speaker terminal |
| Color | Black |
| Channel | 2 (Stereo) |
| Class | Class D / T |
| Amplifier chip | Hypex Ncore |
| Power (W) | 500.0 |
| Remote Control | No |
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