Looptrotter Audio SATurAMP 500 Series Mic/Instrument Preamplifier
The SATurAMP is a 500 series microphone and instrument preamplifier, that also features their unique saturation circuit. This technology has been loosely modelled on the sound of analog tape machines and consoles, and functions in a similar way to a soft limiter. The end result is a warm, nicely coloured sound quality. You are able to track with high levels of RMS signal without the unwanted sound when clipping the pre. Sound On Sound have given a great review of the SATurAMP, and definitely worth a read. Looptrotter Audio Engineering are a relatively new Polish company making a small range of boutique outboard audio gear.
SATurAMP is one of a kind microphone / instrument preamplifier, equipped with an original saturation unit in rack 500 format. Due to this unique combination SATurAMP is a universal and creative tool, allowing the powerful sound, with great detail preservation, just while recording.
Not only incorporates SATurAMP solutions inspired by designs from the 60s, but also many original, modern ones, including digital control over the majority of functions. This particular solution allowed to eliminate the mechanic switches from the signal path, what considerably influenced the reliability and endurance of SATurAMP. The mechanic elements were replaced with hermetic relays and semiconductor switches.
On input in SATurAMP there is a SOWTER transformer based on the AP2620, found in legendary API preamps. The operating amplifier, build entirely of discrete elements, is responsible for amplification. Design refers to early operating amps from the 60s. However the solution of gain regulation comes from XXI century – it’s digitally controlled via micro buttons. The amplification value, expressed in dB, is shown on digital display.
SATurAMP is equipped with high-pass filter with a slope of 12db per octave. There are three options of cut-off frequency, with three different characteristics:
Preamplifier with amplification of 66dB (gain 60dB + output +6dB) Gain on operational amplifier, build of discrete elements Gain control without mechanic contacts Smooth regulation of output level with OUTPUT knob Instrument input, Hi-Z, on the front panel (impedance of 1M ohm), build of discrete elements Original saturation unit adding low order harmonic frequencies, working also like soft limiter Signal peak indicated with LED 2 LEDs indicating signal saturation level (4% and 8% THD) 3 LEDSs indicating output level PAD -20 dB Phantom power 48V Polarization switch High-pass filter with slope of 12db per octave, with selectable cut-off frequency and characteristic: 60 Hz - Chebychev, 100Hz - Butterworth, 160 Hz - Bessel MUTE button – muting the preamp output SOWTER transformer in signal path 100% original design guaranteeing unique, original sound