HDPlex H3
Audiophile PC


10.6×11.3×4.0 inches (LxWxH)

Includes an Intel i7 CPU, 16 GB of DDR3 RAM, 500 GB of NVMe Solid State Storage, 1 TB of SATA Solid State Storage, a JCAT USB Card FEMTO, an HDPlex 200 W Linear Power Supply, and Windows 10 Home


Get the most out of your external DAC audio-PC setup with the JCAT USB Card FEMTO, an HDPlex linear power supply, and powerful PC components.


The HDPlex H3 is the best performing fanless heatsink-case mini pc, able to cool a wide variety of processors.  The case measures only 10.6×11.3×4.0 inches (LxWxH).  The H3 case is a heatsink that directs heat from the internal parts to the outside of the case through six heatpipes.  It is compatible with Mini ITX and Thin Mini ITX motherboards and processors with TDPs of up to 65W.  There is space for up to 4 2.5″ storage drives.  Due to its size, it is not compatible with graphics cards.  It is compatible with other PCIe x16 expansion cards.  The case has a 3.5 mm audio jack, 2 USB 3.0 ports, 2 USB 2.0 ports, and a power on/off button on its right side.  It is compatible with external power supplies.


This configuration includes an ASRock H370M-ITX motherboard, an Intel i7 processor, 16 GB of DDR3 RAM, 500 GB of NVMe solid state storage, 1 TB of SATA solid state storage, Windows 10 Home, a JCAT USB Card FEMTO audiophile USB card, and an HDPLEX 200 W linear power supply.


The JCAT USB Card FEMTO is a USB card designed to transfer high quality audio content from a PC to an external digital-to-analog converter (DAC) or a USB-to-S/PDIF converter. It includes an external or internal power input and two USB 3.0 ports. It is built with top quality military grade linear regulators and filters to eliminate noise interferences from a PC and guarantee superb sound.


The HDPlex 200 W Linear Power Supply is a DC-DC power supply that produces a much cleaner signal than can be achieved with standard AC-DC power supplies.  They are useful for audio computers due to their low ripple noise and no high frequency noises.  Four power outputs are available to power a computer as well as other internal or external devices.  The motherboard and any other internal devices such as Solid State Drives will be powered with separate cables for electrical isolation.


The Intel i7-9700 processor has the following specs:

# of Cores – 8

# of Threads – 8

Base Frequency/Core – 3.0 GHz

Turbo Frequency/Core – 4.7 GHz

Cache – 12 MB

TDP – 65 W

Integrated Graphics – Intel UHD 630

Passmark Benchmark – 15,659

Passmark Graphics Benchmark – 1,208


Rear Ports:

1 DC Power Connector

2 USB 2.0 Ports

1 PS/2 Mouse/Keyboard Port

1 DisplayPort

2 HDMI Ports

2 USB 3.1 Gen 1 Ports

2 RJ45 Port w/ Intel I219V & I211AT

4 USB 3.1 Gen 2 Type A Ports

2 Wi-Fi Antenna Ports

3 Analog Audio Jacks for 7.1 Channel Audio w/ Realtek ALC892

Additional information

Weight 12.5 lbs
Dimensions 10.6 × 11.3 × 4.0 in