The P1000-1 from ATI is a stereo turntable preamplifier, providing very low noise and high circuit headroom that the physics of disc cutting requires. The unit incorporates a low noise input stage designed for use with the low source impedances typical of phono cartridges. The output stage is free of crossover distortion and of sufficient current swing capability to drive 600Ω loads to full supply voltage.
Signals that are strongest in the neighborhood of the cartridge/tone arm resonant frequency, (typically 6Hz to 10Hz) can be generated due to record warp or seismic pickup from people walking, bumping studio desks etc. An active two pole, subsonic filter bridged around the RIAA equalization network protects downstream equipment from overload due to these signals. The Q of the filter avoids the noticeable low-frequency roll-off of regular "Rumble Filters".
Included high-boost and high-cut switches allow for brightening a muddy recording or aid in reducing stridency. DIP switches allow for cartridge loading to compensate for various cable capacity effects.
- High-gain, low-noise stereo turntable preamplifier with transformer balanced outputs
- RCA inputs and terminal block outputs
- Two pole active filter provides a 30dB roll-off by 7Hz (typical arm resonance) for cleaning up sub sonic material
- Push button low and high pass filters
- DIP switch cartridge loading allows precise compensation for cable capacity effects on the cartridge