Tonight I finished assembling Mirand A1V12 in a new case (Cresnet SMPS Audio SMPS units for sale). And again I am very happy with this amplifier, it is my favorite in the AB classAnd this is the first time I have listened to it with Mirand DAC 1.2a, USBbridge sig, Sghanti. Exceptional! And many thanks to Sonny !!!
Nice setup as usual, just saw your post!
Cresnet can you recommend which of your products would work with the Mirand A1 V1.2
Hi all - I have a Mirand A1 for sale at a good price. If you missed out on these this is a great chance to pickup the parts you need to build his best amp.
FS: Mirand A1 V1.2
FS: Mirand A1 V1.2
For anyone interested, i'm selling my sonny discrete preamp which is cased, with remote and LPS v2.1 included.
FS: SonnyA's discrete preamp with chassis, OLED & his PSU
FS: SonnyA's discrete preamp with chassis, OLED & his PSU
Hello everyone,
Just a few questions about the Mirand A1 v1.2 amplifier.
- In the user manual, bias setup, do we reference J21 and J23 to GND when setting trimmer or do we measure across J21 and J23 and trim? What I've done was reference to GND but just want to make sure. Bias seems to jump +/-5mA continuously, is that a normal behavior? DC offset is perfect and sine wave output seems normal.
- What is the optimal input cap value 2.2uF / 3.3uF? Can we omit input cap?
- If using the XLR input board, the 3 pin input connector is not labelled with +/-/gnd, I found out that center pin is gnd by probing and looking at Vitalie's pictures (which was hard to see the connection), if looking at the PCB from the input side, from left to right, left being pin 1 for this scenario:
1 = (-) or cold
2 = (gnd)
3 = (+) or hot
Is that correct? There's no documentation for the XLR input PCB...
Thanks
Do
Just a few questions about the Mirand A1 v1.2 amplifier.
- In the user manual, bias setup, do we reference J21 and J23 to GND when setting trimmer or do we measure across J21 and J23 and trim? What I've done was reference to GND but just want to make sure. Bias seems to jump +/-5mA continuously, is that a normal behavior? DC offset is perfect and sine wave output seems normal.
- What is the optimal input cap value 2.2uF / 3.3uF? Can we omit input cap?
- If using the XLR input board, the 3 pin input connector is not labelled with +/-/gnd, I found out that center pin is gnd by probing and looking at Vitalie's pictures (which was hard to see the connection), if looking at the PCB from the input side, from left to right, left being pin 1 for this scenario:
1 = (-) or cold
2 = (gnd)
3 = (+) or hot
Is that correct? There's no documentation for the XLR input PCB...
Thanks
Do