Need help?Do you have a question about the Audio Note DAC Kit 4.1 and is the answer not in the manual?
Install 4 feet in the chassis bottom using M4 nuts and washers for stability.
Install the Mains transformer and Choke into the chassis, securing them appropriately.
Select and wire the primary winding of the mains transformer according to your region's voltage.
Install the IEC socket and rocker switch into the chassis in their designated positions.
Mount the choke into its designated position within the chassis and secure it.
Position and secure the mains transformer in the chassis according to the provided diagrams.
Connect the mains transformer wires to the rocker switch and chassis ground lug.
Locate the shield and note its unpainted hole for chassis grounding alignment.
List of all components required for the M2 Power Supply board assembly.
Step-by-step instructions for assembling the M2 Power Supply board.
Install and correctly orient the 8-pin and 9-pin valve bases onto the PCB.
Identify and install resistors onto the M2 Power Supply board, noting orientation is not critical.
Install resistors for the HT ADJUST function, noting they replace a trim pot.
Install the Zener diode into position D7, aligning its stripe with the PCB marking.
Install electrolytic capacitors, paying close attention to polarity and orientation.
Install the Bridge Rectifier into position U1, aligning its notch with the PCB marking.
Install the film capacitors, noting that orientation does not matter for these.
Connect filament wires to the M2 Power Supply board, ensuring correct positioning and soldering.
Connect filament wires between valve bases and mains transformer for 6.3V AC supply.
Wiring B+ and Ground for filament components on the M2 Power Supply.
Install the two regulators onto the board, ensuring correct positioning and isolation.
Solder the LED harness onto the M2 Power Supply board from the underside.
Connect the remaining thick Black & White twisted wire to the 13V6 locations.
Attach the heatsink for thermal management, securing it firmly to the chassis.
Connect choke wires to the M2 Power Supply PCB, feeding them towards the shield.
Connect the M2 Power Supply PCB and Mains Transformer, linking voltage and ground points.
Physically secure regulators to the heatsink using provided insulation kit components.
Fit the mains fuse into the IEC plug holder before proceeding with tests.
Install the power-on indicator LED on the M2 Power Supply board.
Install the 6X5 and ECL82 tubes into their respective valve bases.
Secure loose filament and HT wires to prevent shorts during testing.
Measure resistance between B+ and GND on the M2 board to check for faults.
Perform initial power-on checks, observe LED, tube glow, and prepare for voltage checks.
Review measured DC and AC voltages to confirm correct operation of the M2 Power Supply.
List of components required for the Digital Power Supply PCB assembly.
Steps to build the Digital Power Supply PCB, starting with component installation.
Install indicator LEDs on the digital PSU board, ensuring correct orientation.
Install electrolytic capacitors on the digital PSU board, observing polarity.
Install diodes on the digital PSU, paying close attention to polarity and orientation.
Populate the digital PSU board with resistors in their specified locations.
Mount the digital PSU board in the chassis and connect it to the Mains transformer.
Introduction to the digital board's function, inputs, and configuration options.
Install the 5 aluminum spacers and position the Digital Board in the chassis.
Install and secure the 9-pin valve bases onto the 5687 line board.
List of components required for the 5687 line board construction.
Bend and install resistors onto the line board, ensuring correct placement and alignment.
Solder the 4 electrolytic capacitors, observing polarity and aligning with PCB markings.
Install the 2 film capacitors, recommended to place strip towards analog signal entry.
Check the correct placement of the 5687 line board in the chassis.
Wire filaments to the 5687 tubes, ensuring consistent connection between valve bases.
Connect I/V transformers to the Digital Board and 5687 analog board.
Connect the HT pad on the 5687 board to the B+ pad on the M2 Power Supply board.
Connect output transformers, choosing between single-ended or balanced configurations.
Connect Type 1 output transformers for single-ended operation using blue/white leads to RCA.
Connect Type 2 transformers for RCA or XLR outputs, noting primary and secondary wiring.
Mount the toggle switch at the back of the chassis for input selection.
Set up RCA, XLR, and USB inputs, configuring the R36 resistor as needed.
Prepare and connect the coaxial cable for the RCA input.
Prepare and connect the USB input using jumpers and connecting to the Digital Board.
Mount the XLR connector and connect wires to the digital board, similar to the switch.
Reference for interpreting resistor color codes for component identification.
General| Category | Media Converter |
|---|---|
| Model | DAC Kit 4.1 |
| Manufacturer | Audio Note |
| Type | DAC |
| Output Stage | Tube Output |
To Next Page