I have been surprisingly happy with the V5i in spite of my mistakes with it. It is a little forward sounding for my taste, yet with certain cans it is a win. So far I have tried the Hi-Fi Man400se and really like what it does with the bass for these cans. Then I tried the Beyer Dynamic DT770 pro which already has great bass and found it to be too much in every dept. The DT are more sensitive too. Never having been one to stand in one place for long, I am now working on the DT770 pro which involves adding detachable cables, and some 'special' padding for the inside of the cups. No idea of how it will turn out yet, as the new cable has just been ordered (Mogami 2592?), but the parts involved for the rest of this cable upgrade are really good. Got the plug from another guy on this site, and it is the best one that I have seen for aftermarket. More later, less sooner.
Can't tell from photo, but are you using an opto coupler here? It doesn't look like it.
Whammy is up and running, kinda. Waiting for the arduino nanos to be delivered so i can re-flash the R2R volume controller and do some cable management.
Not the most beautiful thing but it works for me. I used my spare muses8920 till the opa1656 arrives. DC offset on the right channel is 1-2mV and cannot measure the right one as it shows 0. Went with the basic gain config with no compensation caps and 20 ohm bias resistors. The positive mosfet gets a bit warmer as i used 4.7K instead of 10k but the optocoupler takes care of it.
As for initial listening experience the highs are back and bass is there more but only a tiny bit better. For context my current dac developed some bass distortion but a new one is coming.
I ordered a set of M3 screws and nuts but it never arrived so i had to improvise.
As for initial listening experience the highs are back and bass is there more but only a tiny bit better. For context my current dac developed some bass distortion but a new one is coming.
I ordered a set of M3 screws and nuts but it never arrived so i had to improvise.
Its like the law of the universe that it works the day i build it but never after i screw the case together. Today i went to turn on the amp and no sound at all, the protection board never left protection. I measured the dc offset and it was oscilalting between +- 800mV on both channels. So i replaced the opamp with a NE5532, TL072 and LME49720 and the issue still presisted. I did every thing i could think of and as a last ditch effort i checked continuity between mains earth and power ground, yup 10ohm short.
The issue was right infront of me the whole time. The 1602 lcd displayed random garbage text rather than AMB Laboraties Lcduino VER... Opened up the psu and checked continuity between mains ground and power ground with the amp power cable disconnected and there it was. The cheap smps somehow shorted its ground to the mains ground overnight. Wrapped it up in tape and no more issues. The SMPS have its own metal enclosure.
The issue was right infront of me the whole time. The 1602 lcd displayed random garbage text rather than AMB Laboraties Lcduino VER... Opened up the psu and checked continuity between mains ground and power ground with the amp power cable disconnected and there it was. The cheap smps somehow shorted its ground to the mains ground overnight. Wrapped it up in tape and no more issues. The SMPS have its own metal enclosure.