AUDIOPHONICS HPA-S500NC Power Amplifier Class D Stereo NCore NC500MP 2x500W 4 Ohm

Two modules NC500MP

Each channel has its own 500W high efficiency amplifier circuit; low output impedance, low distortion and low noise. Each circuit has an independent power supply, which refines the sound stage and to preserve the dynamic without causing additional distortion. All internal connections uses OCC 2.5mm² wiring to enjoy excellent conductivity and preserve all of the subtleties of the signal.

RCA and XLR switchable inputs

The power amplifier has two RCA (stereo) input ports and two XLR ports (balanced stereo). The RCA sockets are gold plated 24k with plastic heat-resistant capsule. XLR connectors are high quality Neutrik connectors with metal latch and gold-plated drivers .

A two position switch allows the user to toggle between the XLR and RCA input with ease. It it thus possible to connect two different preamps and alternate input sources.

5-12V trigger

A trigger socket brings the comfort of an ignition sequence and allows a complete integration into a well-developped audio system. The power input is a IEC14 socket with gold-plated copper conductors. The latter works with a 5x20mm fuse 3.150A (supplied and already mounted).

This amplifier's trigger needs to be used with a mono trigger cable (sold separately).

Heat dissipation

Because it is able to output considerable power, the HPA-S500NC will be subject to thermal stress during use. The heat management is a key issue to achieve a high level of sonic accuracy and keep distortion under a determined threshold.

For this reason, each amplification module is mounted on a large heat radiator which is capable of effectively dissipating the heat. Similarly, ventilation holes distributed carefully will promote air circulation and heat dissipation.

Specifications
Type	Class D power amplifier
Channels	x2 (Dual Mono)
Inputs	2x RCA 2x XLR - 3 poles
Technology	ncore
Power	2x400W under 2Ω @ 1kHz THD = 1% 2x500W under 4Ω @ 1kHz THD = 1% 2x270W under 8Ω @ 1kHz THD = 1% 2x 135W @ 8Ω 10Hz-20kHz THD = 0.006% 2x 250W @ 4Ω 10Hz-20kHz THD = 0.006%
THD + N	0002-0006%
SNR	124dB @ 10Hz-20kHz
Output noise	40μV
Frequency response	0 / -3dB: 10Hz - 50kHz
Trigger	5-12VDC
Power Supply	100-240V Automatic detection of input voltage
Gain	25.5dB
Input sensitivity	Max power at 2.35V RMS XLR : 2x1.17V RMS RCA : 2.35V RMS
Power consumption max	1300W
Efficiency (full power)	92%
Idle consumption	13W
Frame	Sandblasted aluminum
Dimensions	413mm x 330mm (360mm with terminals) x 60mm
Weight	5.480kg

Specifications

Type

Class D power amplifier

Channels

x2 (Dual Mono)

Inputs

2x RCA
2x XLR - 3 poles

Technology

ncore

Power

2x400W under 2Ω @ 1kHz THD = 1%
2x500W under 4Ω @ 1kHz THD = 1%
2x270W under 8Ω @ 1kHz THD = 1%

2x 135W @ 8Ω 10Hz-20kHz THD = 0.006%
2x 250W @ 4Ω 10Hz-20kHz THD = 0.006%

THD + N

0002-0006%

SNR

124dB @ 10Hz-20kHz

Output noise

40μV

Frequency response

0 / -3dB: 10Hz - 50kHz

Trigger

5-12VDC

Power Supply

100-240V
Automatic detection of input voltage

Gain

25.5dB

Input sensitivity

Max power at 2.35V RMS
XLR : 2x1.17V RMS
RCA : 2.35V RMS

Power consumption max

1300W

Efficiency (full power)

92%

Idle consumption

13W

Frame

Sandblasted aluminum

Dimensions

413mm x 330mm (360mm with terminals) x 60mm

Weight

5.480kg

Parts supplied
Cord elbow sector / 3x1.5mm²	x1
Amplifier HPA-S500NC	x1

Parts supplied

Cord elbow sector / 3x1.5mm²

Amplifier HPA-S500NC

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

Very good performance
The HPA-S500NC replaced my beloved Audiolab 8000M amplifiers after 16 years in my setup, driving my Nubert nuLine 264 with ATM. This power amplifier is fed by a NAD C658 Preamp/DAC and it fits like a champ in this setup. "It doesn't sound" is by far the best compliment i can give. Very clear and linear sound and plenty of power.

The chassis quality is good and better what i've expected from the pictures. It's massive with no bells and whistles and serves its purpose perfectly. The connectors are really solid and provide good stability for any kind of cable. If there is anything to complain than probably the bright power lightning, sensitive people might get irritated, but for me it's not a problem.

In summary, a big recommendation from me.

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