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SFL-3 SE

Name: Sonic Frontiers SFL-3 SE
Brand: Sonic Frontiers

Sonic Frontiers

SFL Series

AmplifiersPre-AmplifiersTube AmplifiersDiscontinued

Estimated price (community-sourced)

$3,000

About the SFL-3 SE

The Sonic Frontiers Line 3 SE is a high-end, fully balanced tube line-stage preamplifier using 10 x 6922 and 2 x 6GH8A tubes, with eight line inputs and five line outputs (balanced and single-ended), plus tape and surround-processor loops. Volume is microprocessor-controlled in 0.5 dB steps, operated via remote control. The unit employs a large external power supply with three power transformers and 26 stages of regulation, separating audio circuits from display/control logic to improve noise performance and tube life. Contemporary reviews highlighted its neutrality, transparency, wide bandwidth, and strong dynamic/bass performance, positioning it as a reference-class preamplifier. Physical specifications are 480 x 360 x 115 mm and 27.5 kg. Sonic Frontiers ceased manufacturing electronics in the early 2000s; the Line 3 SE is no longer in production.

Specifications

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