Modulus L2 vs Sonic Frontiers SFL-1
The SFL-1's signal-to-noise is 85 dB against the Modulus L2's 80 dB, its output voltage 2.0V RMS against 15.0V RMS, its weight 10 kg (22 lbs) against 8.84 kg (19 lbs), and its width 480 mm against 483 mm.
AI-generated product photo — not official manufacturer imagery.
The Audible Illusions Modulus L2 is a two-channel vacuum tube preamplifier first introduced in the 1980s. It features a phono input for turntables and multiple other inputs for audio sources. The preamplifier uses high-quality vacuum tubes (4 x 6DJ8/6922 and 1 x 6X4 rectifier) and premium components such as low-noise resistors and capacitors, contributing to its transparent, natural, and detailed sound. It has a maximum output level of 15 volts RMS for line inputs and 20 volts RMS for phono. The Modulus L2 is praised for its superb build quality and remains a highly regarded piece of audio equipment among vacuum tube enthusiasts. It includes an external power supply and weighs approximately 19.5 lbs. The unit is known for excellent imaging, dynamic sound, and a natural presentation without euphonic coloration. It is still in production as of 2023, though some units are sold used with varying cosmetic conditions.
Analog signal output specifications
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The SFL-1's signal-to-noise is 85 dB against the Modulus L2's 80 dB, its output voltage 2.0V RMS against 15.0V RMS, its weight 10 kg (22 lbs) against 8.84 kg (19 lbs), and its width 480 mm against 483 mm.
The LCR MKIII's signal-to-noise is 73 dB against the Modulus L2's 80 dB, its output impedance 20Ω against 1Ω, its output voltage 7.4V RMS against 15.0V RMS, and its weight 2.8 kg (6 lbs) against 8.84 kg (19 lbs).
The SFL-1 Signature's signal-to-noise is 85 dB against the Modulus L2's 80 dB, its output voltage 2.0V RMS against 15.0V RMS, its weight 10 kg (22 lbs) against 8.84 kg (19 lbs), and its width 480 mm against 483 mm.
The 114's signal-to-noise is 98 dB against the Modulus L2's 80 dB, its output voltage 10.0V RMS against 15.0V RMS, its output impedance 220Ω against 1Ω, and its weight 3.7 kg (8 lbs) against 8.84 kg (19 lbs).
Arcam FMJ A19
Mondial Designs Aragon 18K mkII
The specs and the pairings above are open to everyone. Sign up and you get the system builder, the assistant, a compatibility check against the gear you already own, and a watch on this product so a price or pairing change reaches you.
Sign up free