Line 1

About the Line 1

The Sonic Frontiers Line 1 is a high-end tube stereo preamplifier originally produced between 1997 and 1999. It utilizes six 6922 tubes to deliver a smooth and detailed audio performance. The unit features a fully balanced design with a sophisticated regulated power supply and an almost completely DC coupled signal path, ensuring high fidelity sound reproduction. It includes multiple inputs and outputs, with a frequency response extending from 2Hz to 250kHz, total harmonic distortion of 0.01%, and a gain of 12dB. The preamp offers a signal to noise ratio of 98dB and outputs 1V nominally with a maximum of 56V. It comes with an infrared remote control and has a robust build weighing 11kg with dimensions of 480 x 360 x 115mm. The Line 1 is praised for its silky smooth sound and is often paired with high-quality power amplifiers for an exceptional audio experience. Upgrades such as the SE+ have been performed by some owners to improve component quality and longevity, though the core sonic character remains consistent.