2 Off ax-Amplifier Module PCB

2 off amplifier PCBs each measuring 344mm x 85mm for the 60W RMS ultra-low distortion class A amplifier as featured in audioXpress April and May 2024 (note, the production PCB’s are NOT gold plated – standard HASL finish)

Hifisonix Improved Soft Start + DC Blocker PCB aka iSSDCB

The Improved SS + DCB aka iSSDCB provides mains in-rush current limiting to 10A and blocks any DC on the mains making this a welcome upgrade for any power amplifier. The maximum continuous AC mains load current that the board supports is 4.6A  RMS. On 240VAC mains supply this translates to a continuous load of […]

This PCB set is to build a full X-Altra Mini II ‘Classic’ which is the manual control version of the preamp – JFET discrete line amp unbalanced output,  aux unbalanced output, 2 left and right balanced outputs  plus a buffered record output; inputs are  phono (MC and MM), CD, Tuner, Aux, DAC and Rec; Very […]

Upgrade  the manual control X-Altra Mini II to full Remote Control.  The Remote Control PCB replaces the Input Select control PCB and comes with an NXP LPC1114 microcontroller pre-programmed and mounted on the board. You must purchase an Apple TV Remote (aluminium silver type) from your local apple store – the cost is about $20.  […]

X-Altra Mini II Remote Control Board Only PCB

Use this option if you are only purchasing the Remote control board and no others.  PCB comes with NXP LPC1114 mounted and programmed. Do not use cheap plastic imitation Apple TV Remotes from Amazon or Ali Express – you will run into problems.   Attention: you must use the Remote control housing with this board, available […]

This PCB bundle saves on shipping costs and includes a HPA-1 Class A Headphone Amplifier PCB Standard PSU – low noise 15/25W +-18Vout See the relevant project pages for the measurement, BOM and assembly details