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♦ due to tube line stage and the
♦ hybrid vacuum tube preamplifier with semiconductor output buffer area comprising
♦ HP300MK II delivers the drive capability to load various hybrid configurations. In the buffer by using high-current output device (BUF634). Vacuum tube circuits are divided into two parts, Dan ECC802 and form a high-impedance input stage drives buffer using the ECC88 (6922) next steps. Are the NFB over the system. This unit allows two gain settings (low gain: 12.5 dB, gain high 17.5 dB). Through inversion amplifier devices with semiconductor output XLR output. Balanced output is always +6 dB signal on the RCA outputs. Capable of high current output buffer of the HP300MK II real output impedance is very low. Balanced output stage AC-coupling is DC coupled and RCA outputs. Couplingcondensa RCA output is 15 µ F. Built in phono stage as well as technology. RIAA amp Center tube bottle (ECC81). In the MC input stage uses a special low-noise ICS (LT 1115). EQ section was formed with vacuum tubes, the output stage is due to the FET input IC (OPA604). This three-step design will enable all necessary settings required MC phono circuit. In MC input impedance, selectable gain, subsonic filter features. All internal supply voltages are stabilized in each place. New power supply corresponds to the voltage of a wider range, less vulnerable to adverse effects on sound quality due to contamination of the power supply. But the degree of improvement depends on the commercial power supply and environment measurement value viewpoint, but brought results on the hearing. In addition, output hum and noise has been reduced to the theoretical value.