Low feedback design : only 7db (on the 3.The estimated output wpower tubes is 70W. Custom-wound, output transformer with a core of grain oriented silicon steel (8th generation proprietary design) This amp comes with 4 X 6550 power tubes, 2 X Philips 6DJ8 input tubes and 2 x GE (Holland) 7308 tubes as drivers in a push pull configuration to deliver 80W continuous output based on 4 KT99 power tubes.Conservatively rated, high capacity power supply, with polypropylene shunt capacitors.State-of-the-Art passive parts quality: MIT MultiCap, Holco, Cardas (custom cable and RCA jacks), Edison-Price, etc.The SFL-1 stayed around, garnered more rave reviews (Doug Schneider got excited and bought one) and gave birth to an SFL-1 Signature with even more impressive parts quality and a higher price tag. #4.304 Brushed Stainless Steel (non-magnetic) chassis Pretty soon the SFM-75 and SFS-50 were out of the line up and the SFS-40, SFS-80, and SFM-160 amplifiers were introduced.Front panel bias meter with externally mounted adjustment controls.Tube amps are decorative objects just as much as they are functional. Christmas Pyramids powered by candles versus one that was powered by a battery. Sonic Frontiers SFS-50 Tube Power Amplifier. Twin 6DJ8, differential cascode circuit for the input/driver stage with a regulated B+ supply Well I think that is essentially reason Sonic Frontiers folded - just foo many people felt that way.This amplifier is ideal for those with medium to high efficiency loudspeakers (mini-monitor, bookshelf, small planar, etc.) and smaller listening environments, but it is capable of driving suprisingly difficult loads effortlessly." The SFS-40 Stereo Tube Amplifier offers audiophiles with moderate power requirements, an extremely musical amplifier at an affordable price. They are achieved through the proper execution of modern design principles, superior parts quality, skilled hand craftsmanship while utilizing the inherent strength of the classic vacuum tube. With this in mind, Sonic Frontiers has been developing tube electronic products of uncompromising quality which make these sonic goals a reality. " There is a growing recognition by today's sophisticated audiophile that tube technology, rather than solid state, is the best means of attaining harmonic accuracy, correct tonal balance, realistic soundstaging, lifelike dynamics and the greatest sense of overall musicality. The transition from parts supplier to manufacturer happened in the 1987, first as kits (SFM-75) then as factory built - with much success ahead.Īlongwith the SFS-80, the SFS-40 is part of the first non-kit Sonic Frontiers lineup and is centered around two E元4. Does anyone know this power amp, and perhaps shed some light on the maintainence or the type of tubes to make this power amp shine I am considering using it direct to my Oppo BDP 95. Now a brand absorbed into Anthem AV, Sonic Frontiers started as a high-end parts distributor in 1987 : Wima, Vishay, WBT, Gold Aero, Cardas, ALPS et al. I am new to tubes in general, having only owned a Dared and a Yaqin before.
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