Audio Line High-End Preamplifier with 5 Line Inputs

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   �� �������� ��� �������� �� ���� ��� ����� ��� ���������� �� ��� Audio Line High-End Preamplifier with ICs ����� ������ ��� ��������������� ���� ������ ��� ������� ��� ���� ��������� ��� �������� Tape Monitor [BLOCK B]. ���� ����������� � ��������� S3. � RL6 ����������� ��� ������� ��� ������� Line 5, ��� ��������� ���� ���� 5 ��� �������� �������. � Led D5 ����������� ��� ���� ���� ���� 5 ��� �������� �������. ������ ��������� � ����� 5 ��� S1B ���� ������ +VD. ��� ������� ��� ���� [BLOCK A] ����������� ��� ����������� �� RA ��� RB ���� ������ ��� �������� �����������.

  The differences that exist in this circuit form with the Audio Line High-End Preamplifier with ICs are small and they are focused in the number of inputs and in the suppression Tape Monitor choice [BLOCK B].  Thus is suppressed the switch S3. The RL6 undertakes the input choice Line 5 and connected the input selector in place 5. Led D5 was moved also this in the place 5 of input selector.  Also was connected the contact 5 of S1B in the line +VD. In the sound circuit [BLOCK A] added two resistances the RA and RB in the input of record stage.

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Sam Electronic Circuits 3/04