Overview
What are the X Amplifiers?
They are stand-alone Peachtree Audio power amplifiers that utilize the NCore X 500 module from Hypex. Hypex is a premier designer and OEM supplier for class-D power amplifier modules. The Stereo X power amplifier utilizes the exact same power amplifier section we designed into the Carina X (2 modules and 1 power supply). And the Mono X utilizes the NCore X 500 module but adds a dedicated power supply for each channel (1 module and 1 power supply) for even more power.
More about NCore X
Since its inception in 2011, the Hypex NCore technology has been a leader in high-performance Class D amplification. While it set a high standard, Hypex’s continuous pursuit of improvement eventually led to Nilai — their most advanced Class D technology. Elements of Nilai, particularly the improved loop filter, were applied to NCore to create NCore X. This refinement increased loop gain by 6dB in the top two octaves and added some additional gain below that. This gave designers more leeway to optimize various parameters while retaining exemplary audio performance. The result: >60dB error correction across the entire audio band, reducing distortion from the power stage and output filter, with >75dB loop gain ensuring ultra-low harmonic and intermodulation distortion with negligible output impedance. The NCx500 is a superior amplifier module providing an astounding 2x better noise reduction and THD compared to its predecessor, the NC500.
Why did we make the X Amplifiers?
To give consumers the option to add this exciting new technology to their system as inexpensively and simply as possible. Over the past five years, class-D technology has advanced to the point where a few select designs were outperforming the best class A and class A/B power amplifiers we have ever heard. This journey began with our groundbreaking Gallium-Nitride power DAC solution, the GaN-1, in 2022 and continues today with the X amplifiers.
Design
Machined Aluminum Chassis
The X amplifiers are built in the same all aluminum chassis as our GaN-1. The chassis integrates easily into any system or home decor while providing the necessary cooling to ensure the amplifier provides optimal performance over its entire lifetime without the need for fans.
NCore X 500 modules
Simply one of the best, if not the best, silicon-based class-D amplifier module we have ever heard. On par with our GaN-based solutions. Remarkably musical, neutral, transparent, spacious and powerful. Everything you want from power amplifier.
1200 Watt Power Supply
A quiet, efficient and extremely powerful supply provides a rock solid foundation for the X amplifiers. The Stereo X utilizes a single power supply to drive both channels. The Mono X utilizes a single power supply for each channel allowing it to drive lower impedance speakers with greater authority.
Balanced and unbalanced audio inputs
High quality XLR and RCA connectors allow for easy connection from a preamplifier or source device with a high-quality volume control built-in.
Two trigger inputs and front panel power button input switching logic
The XLR and RCA inputs each have a corresponding trigger input. When a trigger is sensed, the X amplifier will automatically power ON and select the corresponding input. The front panel ON/Standby button provides a manual input select override. This allows the X amplifier(s) to be used with two different front ends more easily. For example, the XLR inputs can be connected to a stereo preamp or source device for music listening and the RCA inputs can be connected to a home theater receiver or preamp/processor for movie or TV listening.
Bi-amp button
The Stereo X includes a button on the back panel that sends one input to both amplifier outputs. This allows the Stereo X amplifier to be used to vertically bi-amp [one channel drives the woofer(s), the other drives the tweeter(s) and midrange(s)] a connected speaker without have to use “Y” connectors.
Rear panel ground connection
We have added a ground terminal on the back panel of the X amplifier to allow for easy grounding when using Rel subwoofers, a Bluesound NODE Icon, or any other device that requires a chassis ground connection
CE/FCC approval
Independent testing labs verify that the X Amplifiers exceed these safety standards.
Specifications
| Model | X Stereo | X Mono |
| Compatible Speakers | 2 to 16 Ohms | 2 to 16 Ohms |
| Output Power (8 ohms| 4 ohms) | 300 | 600 WPC | 350 | 700 Watts |
| Frequency Response (20-20kHz, all loads) | +0.00dB/-0.03dB (-3dB @ 70KHz) | |
| Signal-to-noise Ratio (RCA|XLR, AES17) | >100dB | >105dB | |
| Total Harmonic Distortion (RCA|XLR, AES17) | <0.0010% | <0.0006% | |
| Inter-Modulation Distortion (RCA|XLR, AES17) | >80dB | >85dB (Below Fundamental) | |
| Channel Separation (1kHz) | >90dB | N/A |
| Input Impedance (RCA | XLR) | 100k Ohms | 47kOhms | |
| Input Sensitivity | 1V | 2V | |
| Gain (RCA | XLR) | 33dB | 27dB | |
| Trigger Input | 12VDC (Optically Isolated) | |
| AC Input (Switch set to 110) | 90-132VAC, 50-60Hz | |
| AC Input (Switch set to 220) | 180-264VAC, 50-60Hz | |
| Fuse for 110|220 switch setting | 12A|6.3A (Slow Blow) | 10A|5A (Slow Blow) |
| Standby Power Consumption | <0.5W | |
| Idle Power Consumption | 26 Watts | 17 Watts |
| Maximum Power Consumption | 1400 Watts | 800 Watts |
| Height (Including Feet) | 3.3 inches| 84mm | |
| Width | 11.8 inches |300mm | |
| Depth(Includes button & connectors, excludes cables) | 13.9 inches | 352mm | |
| Weight | 11.9 punds | 5.4 Kg | 11.2 pounds |5.1 Kg |
| Shipping weight | 16 pounds | 7.3 Kg | 16 pounds | 7.3 Kg |