As many of you will know, inflation has unfortunately become a fact of life – the levels of which some of us last experienced in our youth in the 1970’s and early 1980’s. Shipping charges and Hifisonix PCB costs from…
The Remote Control board optionally replaces the manual select control board to provide full remote control functionality on the preamplifier. The remote control board has a H-bridge output to drive a motorised ALPS RK27 or RK16 20K log taper potentiometer…
The hifisonix kx2-Amplifier features outstanding distortion and noise performance, coupled to switchable class A, AAB or AB operation. It delivers 28 W peak (15W RMS) class A into 8 ohms at less than 20 ppm distortion, and >80 watts RMS…
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…
This OPA1641 and OPA1642 opamp based stereo line stage, which is used in the X-Altra Mini II full feature line level preamplifier, offers a balanced output for the left and right channels and 2 unbalanced outputs each for the left…
This is the line stage used in the X-Altra Mini II line level preamplifier discussed in detail elsewhere on this website. The presentation linked to above discusses the design and presents the measurements of just the discrete line level amplifier….
Large (300 VA and above) Toroidal transformers suffer from high in-rush currents if they happen to have mains applied when the AC voltage cycle passes through zero volts. On a 1 kVA transformer, this can exceed 100A. Added to this…
