Received the test boards today. Here are a couple of teasers 🙂
Ignore the 3.3V regulator with yellow caps sticking out of the dac, that has nothing to do with the input board 😉
There are some glitches with input switching and POWER LED indicator. Those could be firmware issues, I will ask Soren on the main thread.
Other than that, everything seems to work fine. I will make some adjustments to the layout to allow connections to TXD/RXD pins, and maybe other currently unused pins as well. I'm also considering extending the board outline over J2 power connector to avoid those power wires, and dropping the option to use power from DAM +3.3V line. Can't think of a reason why anyone would want that, given that the input board contains its own 3.3V reg.
Anyone wishing to get into this GB round can still sign up until Sunday evening. The boards will go to fab on Monday and should be ready in one week.
Ignore the 3.3V regulator with yellow caps sticking out of the dac, that has nothing to do with the input board 😉
There are some glitches with input switching and POWER LED indicator. Those could be firmware issues, I will ask Soren on the main thread.
Other than that, everything seems to work fine. I will make some adjustments to the layout to allow connections to TXD/RXD pins, and maybe other currently unused pins as well. I'm also considering extending the board outline over J2 power connector to avoid those power wires, and dropping the option to use power from DAM +3.3V line. Can't think of a reason why anyone would want that, given that the input board contains its own 3.3V reg.
Anyone wishing to get into this GB round can still sign up until Sunday evening. The boards will go to fab on Monday and should be ready in one week.
Attachments
leehan: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
No way! 😉
What is this regulator for? Seems it's for clock but I'm not sure.
Shunt or linear? Is it hard to remove existing regulator and solder a new one to the DAC PCB?
Regards,
mhgawel
leehan: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
leehan: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
PAX: 1 set bare boards + 1 set smd components
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
PAX: 1 set bare boards + 1 set smd components
Hi Normunds,
The board is looking great 🙂
Can the Amanero be fed with the board 3.3vdc and not by USB 5vdc ?
I know that on the Amanero to cut the 5vdc USB power, I need to remove the L1 inductor or LDO.
Regards,
Danny
The board is looking great 🙂
Can the Amanero be fed with the board 3.3vdc and not by USB 5vdc ?
I know that on the Amanero to cut the 5vdc USB power, I need to remove the L1 inductor or LDO.
Regards,
Danny
leehan: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
PAX: 1 set bare boards + 1 set smd components
Fabian85: 1 set bare boards + 1 set smd components
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
PAX: 1 set bare boards + 1 set smd components
Fabian85: 1 set bare boards + 1 set smd components
leehan: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
PAX: 1 set bare boards + 1 set smd components
Fabian85: 1 set bare boards + 1 set smd components
C37: 1 assembled board
tubesguy: 1 assembled board
robertrowett: 1 assembled board
secanbj: 1 assembled board
RollE2k: 2 set bare boards + 2 set smd components
misterrogers: 1 assembled board
bambadoo: 1 assembled board
randytsuch: 2 bare boards
danny_66: 1 assembled board
bappe: 2 bare boards
algar_emi: 2 sets bare boards + 2 sets smd components*
nbivol: 1 assembled board
jeremysk: 1 set bare boards + 1 set smd component
SebastianL: 1 assembled board
hsi68: 1 assembled board
wineds : 1 set bare boards + 1 set smd components
B&W_arthur: 2 assembled boards + 1 set bare board + 1 set smd components
Rol: 1 set bare boards + 1 set smd components
ctleung: 2 sets of bare boards + 2 sets of smd components (username corrected)
vanwykca: 1 assembled board
gig: 1 assembled board
Ardahan: 1 set bare boards + 1 set smd components
mhgawel: 4*assembled board
Myint67 : 1*assembled board
siulaken: 1 * assembled board
zephyr: 1 set bare boards + 1 set smd components
gazzagazza: 1 * assembled board
ramallo: 1 assembled board
oneoclock: 1 assembled board
ellissdee: 1 assembled board
tvicol: 1 set bare boards + 1 set smd components
ekidnah09: 1 set bare boards + 1 set smd components
spikestabber: 1 assembled board
casshan: 1 assembled board
madalin apostol: 1 assembled board
sandor: 1 assembled board
tods: 1 assembled board
ericleewm: 2 assembled boards
sirrus1: 1 assembled board + 2 bare boards + 2 sets of smd components
gouroulubrik: 1 assembled board
axelcs: 1 assembled board
Bones13 : 1 assembled board
rsotirov: 1 assembled board
reodds: 1 assembled board
chiguy: 1 set bare boards + 1 set smd components
gugi100: 1 assembled board
Pinnocchio: 1 assembled board
PAX: 1 set bare boards + 1 set smd components
Fabian85: 1 set bare boards + 1 set smd components
C37: 1 assembled board
No, that is not supported nor recommended because it would break the galvanic isolation of USB bus from the DAC. You would need to have a completely separate 3.3V supply just to power the Amanero (=separate secondary on the power transformer or a completely separate transformer).
OK, so the 3.3vdc power supply of the input board is on the DAC side.
For the Amanero USB 5vdc or another 3.3vdc is needed.
Are the pins for the Amanero 3.3vdc easy accessible ?
For the Amanero USB 5vdc or another 3.3vdc is needed.
Are the pins for the Amanero 3.3vdc easy accessible ?
Yes, it is intended to power the toslink receiver and any front panel indicator LEDs without loading and polluting the +3.3V supply in the DAC. The regulator takes power from the PWR A+ line of the DAC.
I am making some adjustments to the board layout, and to solve all future connectivity issues, the entire Amanero and DAM J3 and J2 connectors will be duplicated. So there will be access to all pins, and FPGA SLV, FPGA MCLK OUT, I2S MCLK OUT and Amanero MCLK OUT pins will also have pads for U.FL connectors (The additional connectors themselves will not be included).
Does anybody have any source for TORX147 receivers? I know these should be the best ones for SPDIF, which is why i ask 🙂
Updated board layout
Here are the latest versions of the input boards that will be sent to fabrication tomorrow. I expect to have them ready by March 9. Assembly will take a few more days.
I will order a few extra boards, so send me a PM if you missed the GB.
Changes from the initial design:
1) The input board now extends over the J2 connector on DAM1021, so no additional power wiring is needed. The other options to power the input board have been removed.
2) The entire DAM1021 J2 and J3 and Amanero headers have been duplicated, so ALL pins on those headers are accessible.
3) There are U.FL pads for Amanero MCLK OUT, I2S MCLK OUT, FPGA SLV and FPGA MCLK OUT lines. U.FL connectors for these additional pads will not be included.
4) PWRLED connection has been corrected.
5) The large mounting holes for BNC connector now have metallization, so they can be soldered.
6) Adjusted Amanero connector geometry (it uses metric grid).
7) Moved the Front Panel connector to allow the use of right angle header for horizontal connection. It is needed to fit into 1U case.
8) The front panel board is smaller to optimize panelization for PCB manufacturing.
Here are the latest versions of the input boards that will be sent to fabrication tomorrow. I expect to have them ready by March 9. Assembly will take a few more days.
I will order a few extra boards, so send me a PM if you missed the GB.
Changes from the initial design:
1) The input board now extends over the J2 connector on DAM1021, so no additional power wiring is needed. The other options to power the input board have been removed.
2) The entire DAM1021 J2 and J3 and Amanero headers have been duplicated, so ALL pins on those headers are accessible.
3) There are U.FL pads for Amanero MCLK OUT, I2S MCLK OUT, FPGA SLV and FPGA MCLK OUT lines. U.FL connectors for these additional pads will not be included.
4) PWRLED connection has been corrected.
5) The large mounting holes for BNC connector now have metallization, so they can be soldered.
6) Adjusted Amanero connector geometry (it uses metric grid).
7) Moved the Front Panel connector to allow the use of right angle header for horizontal connection. It is needed to fit into 1U case.
8) The front panel board is smaller to optimize panelization for PCB manufacturing.
Attachments
Will you publish the complete parts list of the latest version so we can buy the throug holes parts? Tx
Is it possible to get the front / back panel drilling plan?
I will order front panel for my DAC/headphone amp soon, and i will use this as for it, so i would be glad if it is possible to fix.
Also, please add mounting holes on the front/input selector boards, so you can mount it from the back into the front panel.
I will order front panel for my DAC/headphone amp soon, and i will use this as for it, so i would be glad if it is possible to fix.
Also, please add mounting holes on the front/input selector boards, so you can mount it from the back into the front panel.