The new Siegfried Reference monoblocks gain further sonic benefits with a shorter, faster and fully balanced negative feedback loop, with zero global negative feedback. The negative feedback loop completely eliminates ringing and requires no capacitor compensation to maintain critical phase integrity and information. The result is an amplifier that remains stable even under the most demanding loads.
Adjustable precision-regulated plate, screen and bias supplies hold the output tube operating point constant even under AC and main power supply fluctuations, and stabilizes the critical power supplies yielding tonal stability and sonic integrity especially during complex, dynamic signal conditions.
Another new feature is a user adjustable Damping Factor feedback control that allows the user to adjust the amplifier’s output impedance by varying the amount of negative feedback. Impedance can now be precisely set to suit the listener’s taste, and to improve control of the loudspeaker loads to deliver best performance.
The 4 possible settings are:
Finally, the amplifier has been substantially re-voiced with premium Mundorf silver oil capacitors, for a sweeter, more extended top end and mid range tonality that sounds more relaxed, with better flow and integration. Input stage capacitors are also bypassed.
Even a brief listen to the new Siegfried Series II monoblock reveals the successful implementation of the new technology. The mid bass has more authority and control while the critical midrange exhibits a new effortlessness in reflecting the natural instrumental colors and timbres. This greater sense of ease and control of the critical mid bass and midrange area enables the top end to sound completely natural and unconstrained.
With its massive power handling capabilities, the Siegfried has always excelled at delivering effortless speed, dynamics and real control in the bottom end, with an almost organic bass quality. With this new version, even at low level listening one can enjoy the nuances and micro-dynamics of music. The Siegfried II scales up from handling the smallest intimate performances to the largest orchestral fanfares with ease. It strikes the perfect balance between seemingly endless weight and authority, and effortless finesse.
|Vacuum Tube Complement||12 x 6550 or KT-88, 1 x 12AT7, 2 x 12BH7|
20Hz – 20kHz <2.5% THD
|Tetrode: 650W, Triode: 330W
|Input sensitivity||Variable between 1-2V, depending upon DF setting|
|Optimum load range||4Ω – 8Ω|
|S/N Ratio||-110dB, 120 Hz|
|Power consumption||Idle = 600W, Full power = 1500W|
|Primary mains fuse ratings||100/120V = 20A Ceramic Slo Blo, 220/240V = 10A Ceramic Slo Blo|
|Logic fuse||100/120V = 1A Ceramic Slo Blo, 220/240V = 1A Ceramic Slo Blo|
|Input fuse||100/120V = 2A Ceramic Slo Blo, 220/240V = 1A Ceramic Slo Blo|
|Filament fuse||100/120V = 2A Ceramic Slo Blo, 220/240V = 1A Ceramic Slo Blo|
|Secondary fuse rating||Plate Fuse = 5A fast acting 600V, Screen Fuse = 0.75A fast acting 600V|
|Dimensions W x D x H||11.5 x 24 x 24 inches (29.2 x 61 x 61 cm)|
|Weight||200lbs (90Kg) per monoblock unpacked, 325lbs (147Kg) packed|