The solid state high voltage supply uses fast recovery soft start rectifiers and our unique Reverse Recovery Spike Filter that makes our rectifiers as smooth sounding as tube rectifiers without sacrificing speed or dynamics. The heaters are supplied with filtered DC from Schottky rectifiers, which do not exhibit the switching spikes of lesser rectifiers, and the heaters themselves are bypassed with wide bandwidth ceramic capacitors to filter out interference. The passive RIAA components are high quality Vishay Dale 1% metal film resistors and Panasonic EPCQ(U) and Cornell-Dubilier Orange Drop polypropylene capacitors. Carbon composition grid and plate stopper resistors round out the RFI filtering that lets this 6DJ8/6922/7308 based preamp perform without the edginess sometimes associated with this fast, articulate tube. Tube bias is set via Agilent LEDs, a special model that has excellent noise and linearity characteristics for this application.
The phono preamp has a gain of approximately 36 dB at 1 kHz and is intended for use with phono cartridges of 2.5mV and higher output, with 5mV output being the design center. Higher than 5mV output is certainly fine, and one may also use lower output cartridges with a suitable step up device. Input impedance is 47.5K ohms, input capacitance is 50pF. Remember that your phono cable's capacitance will add to this figure and increase your cartridge's capacitive load somewhat. Frequency response exhibits +/- 0.3dB RIAA curve accuracy. The Seduction is designed to operate into line stages with 50K or higher input impedance through interconnects of 1M or shorter length. The Foreplay III line stage is the best possible match, and the combination of the two will make for a most satisfying two-chassis full preamp setup.
• Natural Bamboo
• Caramelized Bamboo
Ball and Buck + Bottlehead
Boston, Massachusetts / Bainbridge Island, Washington
Questions? Contact us