The Tilt-2 Control kit consists of a small PCB (1.4in by 2.8in), a stereo, shorting, three-position rotary switch, four capacitors and sixteen resistors. It is a passive design, which entails a -2dB insertion loss and whose center frequency is 600Hz. The center position results in a flat frequency response, but is down -2dB. As the control twists clockwise, the highs go up by +1dB and the lows go down by -1dB per click. Conversely, as the control twists counterclockwise, the lows go up by +1dB and the highs go down by -1dB. Kit includes user guide and the PCB, rotary switch, and all the polypropylene capacitors and 1% metal-film resistors.
The Aikido PH-1 phono stage returns. Building phono stage based on the Aikido topology makes perfect sense, as the Aikido’s low distortion, noise, and output impedance, without the use of negative feedback—all are highly desirable attributes in a phono preamp. The Aikido PH-1 phono preamp is an extremely flexible design, as a nearly infinite number of different Aikido Phono Stage configurations can be built on the PCB. Nonetheless, our goals always remain constant: high-gain, low-noise, and low output impedance. The input tubes provide the voltage gain in this preamp, while the output tubes isolate the input tubes from both the equalization network and the external load, and they deliver a low output impedance.