Hi-End pre amplifier to switch input channels, output buffering, volume control and headphones amplifier (HPA).
Special topology used for the input switch by relays, where the active input signal DOES NOT PASS THROUGH the relay's contacts!
All relay's contacts is this channel are open.
Motorized potentiometer - IS NOT at the signal pass, it is used for manual operation and indication only.
2 outputs to connect 2 amplifiers (amplifier+sub)
Due to the normal and inverted outputs, it is possible to use as balanced connection with a special cable (2RCA-XLR for each channel).
Headphones output at the front panel.
Remember the Last Input selection.
Remember the Last Volume Control position for each input separately.
Restore potentiometer position after power up, exit from standby or input change.
Clear and simple input position and standby indication.
4 input channels with EMC and ESD protection
Input #1 with 3 options:
- normal (the same as inputs #2-4)
- with DC Block at the input
- with Phono stage preamplifier
2 pairs of buffered outputs, one is inverted
MDAC Volume Control
Separate headphones volume control, independent from the Master Volume.
Motorized potentiometer for manual Volume Control and volume position indication
InfraRED Remote Control
Automatic standby if there is no input signal
High Quality small signals relays to input switch and output mute
Easy configuration and Firmware upgrade through USB port.
Phono stage preamplifier and Headphones amplifier are the separate modules, so is possible to use different DIY designs. All necessary information will be provided (including PCB geometry, connectors pinout, etc.)