Amplifon WT 30 II

 The WT 30-II amplifier is the first device constructed in Amplifon Audio company, based on triodes operating in the A-class. The leading idea during designing this amplifier, was to construct a device with perfect sound features, but devoid of typical limitations of electron-tube amplifiers.

Due to the application of a durable and current-efficient double power-triodes 6N13C we got the output power coming to 31 W in the A-class and a relatively high resistance to a load changes. The low impedance of the power-triodes and the modern deka-sectional triodal output-transformers secure for the wide transfer band with the small extent dependent on the output power.

Very interesting is the system of the power-tube polarization, securing for the direct quiescent current of the power-tubes, independent from the strain ageing effect or from the changes of the power voltage. Apart from its basic functions, this system secure also for the lack of any regulations not only during the exploitation but also during the tube's exchange.

Amplifon WT 30II Features:

Integrated electron-tube amplifier based only on tubes operating in the pure A-class without returnable compression

Automatic regulation of the power-tubes' quiescent currents

Three linear inputs

Triodal input system on the 5963 Philips JAN tube (ECC82; 12AU7; 5814)

Triodal operating system on the 6N1P-EW tube

Push-pull output stage, based on the double triodes 6N13S (6AS7; 6080) operating in the A-class in the parallel push-pull system

Deka-sectional triodal output transformers adapted to work with 4- i 8-ohm speakers groups

Completely separated rectifiers and power supplier's filters for the left and the right channel

Automatic, delayed switching on of the anode voltage with 'Stand by' function

SPECIFICATIONS:

 Power Output:  31 W RMS A-class

Frequency Response:  7 - 62,000Hz -3 dB

Distortions:  less than 0,2% (1W; 1kHz)

Input Impendance:  50 k Ω

Output Impendance:  4 Ω or 8 Ω

Input Sensivity:  270 mV

Signal-to-Noise Ratio:  89 dB

Power Supply:  AC 220 - 240 V, 50 Hz

Power Consumption:  ~315 W 

Dimensions (W xH x D):  435 x 280 x 430 mm

Weight: 16,8 kg

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