HIFI PGA2311 preamp board
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Item#: MABP0196
$56.00 (unit price)
Quantity:
$56.00 (unit price)
Quantity:
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Features and Specifications
HIFI PGA2311 remote preamp board (The finished and tested board)
1, the board uses the original BB's new top-level volume control chip PGA2311PA, internal use pure resistor networ. The internal amplifier don't work at 0dB or below and will start to work when it is more than 0dB. Note that this board uses the PGA2311PA, there are A (0.0002% THD + N) ratio which is smaller distortion than one without A (0.0004% THD + N) . The board set to -95dB to + 31dB, step 1dB;
1, the board uses the original BB's new top-level volume control chip PGA2311PA, internal use pure resistor networ. The internal amplifier don't work at 0dB or below and will start to work when it is more than 0dB. Note that this board uses the PGA2311PA, there are A (0.0002% THD + N) ratio which is smaller distortion than one without A (0.0004% THD + N) . The board set to -95dB to + 31dB, step 1dB;
2, AC8-12V power. With original ON three-terminal regulator, digital part is power supply by an independent MC7805, the interference to a minimum. Based on PDF requirements, there is decoupling capacitors Philips 104 in analog and digital power part of the main chip.
3, the digital drive and relay drivers are using a dedicated chip, more professional;
4, STC15F2K series microcontroller, stable and efficient, stronger anti-interference performance, all the states have the power and memory;
5, external control switch signal with optocoupler isolation,
6, coding switch small board and the display panel can be separated (connected by double line), or be together (no need cable connection), very flexible; Size: Displayboard (including coding switch small plate) 100mm x 32mm,
7, with 4 source selection output interface, can be easily extended;
9, standard Taiwan long shaft encode switch, easy installation;
10, all components are brand new original.
Instructions:
encode switch: turn to left or right to adjust the volume; one push swith to switch input , long press 3 seconds(power switch) , press 10 seconds to restore the factory settings.
Remote control: volume + - to adjust the volume; program + - is the input switching; 1-4 is input switching; power is the power switch; input (shown) is a graph showing current input state; look back is to restore the factory settings.
Display Description:
The board is based on the amount of attenuation volume display shows, such as -50 is attenuation 50dB; 0 is no attenuation that is straight; 10 is an enlarged 10dB.
Input status display CH1 CH2CH3 CH4
Mute status display ---
Shutdown status display.
Power scroll PGAVOL
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