Qualiton A75 KT120 péntodos. Own...
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Class-A integrated vacuum tube amplifier with an output power of 2 x 75 W. The appliance can be connected to 4 Ω and 8 Ω nominal impedance speakers. The power outputs, based on output pentodes type KT 120, were tuned to the before-mentioned nominal loads through our in-house manufactured, precision winding output transformers. The bias control circuit plays an important role in the operation of the power output too. This circuit monitors the quiescent current of the output tubes and adjusts it to a preset value. Thus, all four output tubes are in perfectly equal operation states.
Out of three asymmetric and one symmetric inputs, one can choose the desired one using the front panel volume control and input selector rotary switch. The symmetric input features a XLR connector. In this case too, the entire volume control and input selector unit is in full harmony with the shiny polished casing of the appliance, bringing together functionality and aesthetics perfectly.
The clearly arranged, minimalistic remote control was designed with this philosophy as well: the unique and aesthetical exterior design was always kept in mind and the usability was improved. Finally, a couple of words on the set of tubes we use: the audio signal arriving on the selected input of the appliance is received by vacuum tubes type Tungsram ECC83. The driving voltage as well as its matching are produced by E88CC/6922s. In power output, the before-mentioned output pentodes KT 120 are in action—strictly in Class-A.
Warranty: 2 years
|Rated output power||2 x 75 W, stereo|
|Total harmonic distortion||< 0,1% (f = 1 kHz, rated output)|
|Frequency response||25 Hz to 70 kHz (-3 dB, rated output)|
|Input sensitivity, Balanced Stereo IN||920 mV, to rated output|
|Input sensitivity, Unbalanced Stereo IN||920 mV, to rated output|
|Number of input ports / channel||3 unbalanced Stereo IN, 1 balanced Stereo IN|
|Number of output ports / channel||2 unbalanced Power OUT|
|Gain||+28.5 dB (RL = 8 Ohm)|
|Input impedance, Balanced Stereo IN||40 kOhm|
|Input impedance, Unbalanced Stereo IN||10 kOhm|
|Load impedance||4 Ohm and 8 Ohm|
|Signal-to-noise ratio||> 100 dB (RL = 8 Ohm, rated output)|
|Power requirements||620 W|
|Tubes required||4 x KT120 (KT150 or KT170 optionally); 4 x 12AT7; 2 x 12AX7|
|Dimensions||35 x 42 x 22 cm|
|Qualiton A75 Silver Metalic||7.800,00|
|Qualiton A75 Black||6.900,00|