Sequerra Introduces 1070-A Mic Preamp

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Sequerra Audio Labs, L.L.C. announces the introduction of the Model 1070-A microphone preamplifier, a coalescence of engineering experience, intelligence, and innovation. Founders Richard Sequerra and Mark Conese designed the 1070-A to operate as close as two feet from the microphone and to drive long line-level cable runs up to 300 feet. Variable input loading perfects the circuit between the microphone and the 1070-A for improved fidelity and a remote preamp power supply assures the lowest possible noise floor.

The Sequerra 1070-A possesses electrical specifications that, might to some, read like misprints: It has a frequency response of 0Hz to 400kHz (-3dB), internal noise of 1 nano-volt per root-Hz, harmonic distortion measuring 0.0001% (0Hz to 40kHz with a 150-ohm input), a slew rate of 20 volts per microsecond, and phase linearity of -12 deg at 100kHz. It can accept up to a five volts RMS at the input and can output up to +27dBu before clipping.

An utterly distinctive black anodized aluminum tube houses the Sequerra 1070-A, reflecting its intended use near the microphone. Users select gain from +10dB to +70dB in 1dB steps and input loading of 150 Ohms, 1.2k Ohms, and 5k Ohms. A peak detecting output level meter facilitates the gain adjustment at the microphone, and a 48-volt phantom power supply switch allows the use of condenser microphones. Finally, phase reversal, muting, and two selectable high-pass filters round out the 1070-A's features. A separately available external power supply drives up to four 1070-As.

"The Sequerra 1070-A microphone preamplifier is a technical and aesthetic marvel," noted Brad Lunde, president of Transamerica, the US distributor for Sequerra Audio Labs. "Dick Sequerra is amazing, as no detail has escaped his scrutiny. This marks a new era of professional audio electronics design where the highest level of performance is sought. The 1070-A removes the last veil between mic and recorder for engineers, producers and musicians who must push the envelope to the absolute highest levels of resolution."