The DiaLogue Seven shares much of its basic circuitry with the DiaLogue Five stereo power amp. The novel phase splitter and driver stage implementation have been adapted for monaural functionality in linearity, distortion, and power delivery. We accomplish this by using an industry unique dual feedback topology: Cross coupled current feedback for superior impulse behaviour and gain stability at any level.
We use very small amounts of negative feedback for a more precise gain setting, lower distortion, and lower output impedance. This feedback technology effectively cancels the byproducts of negative feedback, thus creating an amplifier circuit that gives you all the benefits of properly implemented feedback, but without the drawbacks.
Newly designed PrimaLuna wide band low loss DiaLogue output transformers designed to handle more difficult speaker loads. A 2 Ohm tap is included in addition to the 4 Ohm & 8 Ohm taps. As with all PrimaLuna amplifiers, the DiaLogue Seven comes standard with Adaptive Auto Bias, fuse protection, and soft start circuitry for extended tube life. As with the DiaLogue Five, the DiaLogue Seven also includes upgraded Solen capacitors, and fast recovery diodes in the power supply for the ultimate in detail and dynamics. Amplifier can be used in Ultralinear or Triode mode and is supplied with UL/TR function heavy metal remote control (one remote per pair of mono amps).
|Power Ultralinear||70 Watts per channel|
|Power Triode||40 Watts per channel|
|Frequency response||10Hz - 100kHz +/-3dB|
|THD with AABB||<0,25% at 1W; 2% at rated power|
|S/N Ratio||84dB unweighted|
|Input Impedance||100 kOhm|
|Input Sensitivity||880mV rms input for rated output power|
|Maximum Gain||26dB (8 Ohm), 23dB (4 Ohm)|
|Net Weight||63.8 lbs / 29 kg|
|Dimensions||15.9" x 15.2" x 8.3" / 405mm x 385mm x 210mm (L x W x H)|
|Outputs||2, 4 and 8 Ohm|
|Tube Complement||2 x 12AX7, 2 x 12AU7 and 4 x KT-88|