The NXL200 R5.1 is a brand new high performance audio power amplifier module, delivering world class high end sound quality from a very compact all SMT component design.

Featuring very high precision low noise current sources, no input/output capacitors anywhere in the signal path including the feedback, it has a high precision low noise DC servo circuitry to correct DC offset to lower than 1mv, even any DC presented on the input will be corrected.

This design can be powered from as little as +-20vdc to +-65vdc and is completely unaffected by supply rail variations in regard to output stage bias levels and overall subjective performance, what this means is the bias level can be set at +-20vdc and a higher supply can be applied such as +-65vdc and the bias level will be exactly the same.

The design also features very low SNR at -110db with respect to full power output.

Multiple channels can be added onto a common heat sink for home theatre amplifiers.

All this with a footprint no larger than 70mm x 60mm.

Specifications

170 Watts RMS continuous sine wave into 8 Ω Capable when used on a 63vdc supply
260 Watts RMS continuous sine wave into 4 Ω Capable when used on a 63vdc supply
The HPA-NXL200 R5 is 2 Ω Stable
Biased into Class A/B
Frequency Response 3.5hz to 300khz -3dB
Damping Factor At 100hz 8Ω = 800
XLR Balanced input impedance 40kΩ
Balanced Input Gain 30dB
RCA Single ended Input impedance 20kΩ
Single Ended Input Gain = 27dB

SNR -110dB
THD-N = 0.005% @ 100 watts 8 Ohms
Recommended Linear Voltage Supply +-63 volts DC;  Maximum supply +-70vdc
PSU Power Transformer secondary windings 45vac (400VA)
Printed Circuit Board Dimensions 70mm x 60mm
Recommended Conrad Heat Sink MF25-75
Ultra small form factor PCB
Designed as high performance Home Theatre multi-channel amplifier
Or High End 2 Channel stereo amplifier
Unconditionally Stable into any load from 4 ohm loads and up
Extra Heavy Duty Two ounce copper printed circuit board
Rugged high performance complementary Dual Die Lateral MOSFET Output Stage.
The amplifier module comes with a comprehensive installation manual.

NXL200 R5 is shown here driving an 8 ohm load in parallel with 1uf Film capacitor with a 10khz Square-wave 
It is an unusual and difficult load to drive, the NXL200 R5 handles this load very well and shows excellent stability! 

Here is the same test at 1khz:

FFT of the NXL200 R5 driving 8 ohm load   

10% Discount available at checkout if you purchase more than one module!

Basic list parts needed to build 1 x Mono Block NXV200L Amplifier.

• 1 x HPA-NXL200 R5.1 Amplifier Module
• 1 x HPA-NXVPSU One Power Supply Board
• 1 x HPA-Power One R4 AC Mains Controller
• 1 x HPA-Solid State Relay Loudspeaker protection module
• 1 x 300VA toroidal power transformer with 2 x 45VAC secondary winding
• 1 x Conrad MF30-75 heat sink