Line 3 vs SFL-3 SE
The SFL-3 SE matches the Line 3 on signal-to-noise (100 dB), thd (0.010%), output voltage (1.0V RMS), and weight (27.5 kg (61 lbs)).
Both turn up in the same documented systems.
AI-generated product photo — not official manufacturer imagery.
AmplifiersPre-AmplifiersTube AmplifiersDiscontinued
About the Line 3
The Sonic Frontiers Line 3 is a reference-grade, dual-chassis tube line preamplifier using a separate outboard power supply and a fully dual-mono topology for very low noise and high channel separation. It provides multiple single-ended and balanced line-level inputs and outputs (including tape loop and surround/processor loop), remote control, and flexible configuration via its front-panel display and logic control system. The design focuses on neutral, transparent sound with wide bandwidth (specified 2 Hz to 250 kHz) and very low distortion (0.01% THD), achieving a 100 dB signal-to-noise ratio on line inputs. Its valve complement is 10 x 6922 and 2 x 6GH8A tubes, and it is supplied with an infrared remote control. The Line 3 does not include an onboard headphone amplifier and is strictly a line-level preamplifier to feed power amplifiers.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.010%
- SNR
- 100 dB
- Output Voltage
- 1.0V RMS
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 480 × 115 × 360 mm (W × H × D)
- Weight
- 27.5 kg (61 lbs)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions