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
Hifisonix Accurate Inverse RIAA Network (IRN) PCB
in Vinyl preamps
This IRN features very tight RIAA conformance and is ideal for testing the response of RIAA vinyl preamplifiers. The board uses parallel/series combinations of SMD resistors and capacitors to realise superior accuracies. Note, two boards are shipped with each order as you will need one for each channel.
Hifisonix X-Altra HPA-1 Class A Headphone Amplifier PCB
in Headphone amplifiers
This compact headphone amplifier operates in class A up to 180mA peak output current and will deliver 1.75W RMS into 32 Ohms in class A. It remains in class A up to 13V pk-pk into 32 Ohms (which is 5.2W peak class A power) after which it will transition to class AB up to 34V […]
HifiSonix Standard PSU PCB
in Power supplies, Preamplifiers
This PSU features +-18V rails, <100 uV wideband noise at full load along with a muting control circuit for any muting function required by the end user. Additionally, a +12V 40mA relay supply is provided and +5V/+3.3V at 60mA. The board uses a low noise 15 or 25VA PCB mount Nuova Talema transformer.
Hifisonix Speaker Protection PCB
in Power amplifiers
This PCB uses the Unisonic uPC1237 and provides DC offset protection and switch ON/OFF muting. Rather than use a relay to connect the loudspeaker to the amplifier, the Hifisonix Speaker Protection Board uses mosfets which do not suffer from arcing or any other wear out mechanisms. Additionally, there is a short circuit input provided that […]
Hifisonix Micro Ripple Eater (MRE) PCB
in Power amplifiers, Power supplies
The MRE can supply up to 10A from each power supply rail of up to +-50V with suitable heatsinking. It suppresses LF ripple by 40 dB and HF ripple by more than 50 dB and makes a perfect complement to any high performance DIY amplifier. It can be used with higher supply rails, provided the […]