Hifisonix Standard PSU
Here is a low noise general purpose linear power supply that can be used to power the HPA-1 Headphone amplifier or any other low noise small signal application. The Hifisonix Standard PSU features low noise, up to 400mA per rail…
X-Altra HPA-1 Class A Headphone Amplifier
The HPA-1 is a compact high performance class A headphone amplifier that will deliver up to 1.75W into a 32 Ohm pair of headphones. The amplifier features ultra-low distortion, very wide bandwidth and class A operation up to 13 V…
An Accurate Inverse RIAA Network
The diagram above summarizes the interaction of the cutting head response (purple) and the playback EQ (red) which produces the final flat response (green). Note that the cutting head and the phono pickup (cartridge) are velocity transducers and therefore the…
X-Altra RIAA Phono EQ Preamp
The X-Altra MC/MM RIAA preamp is a state of the art design that brings new levels of performance to vinyl EQ featuring best in class measured thermal noise on both MM and MC inputs, tight RIAA EQ conformance and >30…
Hifisonix Audio Design and Engineering
Are you are looking for an experienced solid state audio designer? I am UK based but can undertake design projects on a contract basis for customers anywhere in the world. I specialize in power amplifiers, full feature pre-amplifiers (including low…
