I believe the headphone jack in the BOM is a switched type, so it disconnects the line out when headphones are in. You'd need to change to an unswitched type to have both outputting at the same time. Did you get one of the recommended pots that fits the board? If so, just see where it fits up...

I’d keep looking at the rest of the muting circuit components and their connections/orientations (capacitor, MOSFET, etc.), and check if the circuit is receiving power. Until it’s activating property, it seems likely the issue is in there somewhere. I didn’t think of it before, but with the...

Hello JRRJ, When I start mine up and the relay activates, I can hear a faint hiss and click from it. It takes about 10-12sec on mine since I used a larger C2, and I think the normal capacity C2 has been reported to take about 6sec. Does yours make any noticeable sound? Otherwise, bridging...

Hello slowpogo, I think the upsized capacitors would be fine. I used 1000uf for C3 and C6 in mine since some had done the same for a stated increase in bass response. I used the billed 470uf for C5 and C11, but have upsized capacitance in similar circuit placement for other builds. From what I...

That should work, provided the polarity is also correct, meaning that the + and - connections on your alternate supply physically match (which one is on the outside or inside of the connector). From the spec sheet, it looks like the one on the BOM has + on the inside. Adaptors usually have the...

I think Ø16 capacitors will fit. I also noted caps of that size fitting in other build pictures in this thread, and Ø16 just fit when I was drawing scaled circles over the board layout to answer the same question. The ones I used were Ø18 (previous post pics) and I had to mount the C4 and C7...

I finally finished my Nuhybrid build! The amp has been in service for just over a month, and it's been great step up in my listening experience. Having proper power behind my headphones makes the music sound full, and it's been nice to have something to boost my phone so I can properly listen...

@Pricklyears101 I definitely had the wrong tool for that measurement. Sorry about that, but It's what I had at the moment. Seems like that charger unit is worth a shot for a few bucks, and a smoothing circuit could help ensure a clean signal. I'm interested to hear what you come up with.

Hello Prickly, I think you’ll have to look for another converter unit that is capable of handling more power. The references on that one indicate about 7W (volts x amps), and the Nuhybrid uses a 25W power supply. I doubt it uses all 25W, but the difference leaves a lot of range. I measured...

Just ordered the rest of my components. Now to play the waiting game.. After much deliberation, I decided on all the cap changes I wanted to try. Since they were so cheap, I also picked up a full set worth of Elna's and Pan FR's for the 10uF caps in case I feel like changing things up. List of...

I won't deny that, but half of my fun is the research and discussion around component selection. As a designer (in another field), I get the value of simplicity in design and the BOM, but also like to see what I can customize in a 1-off build. When you know simplicity is a design factor, you...

That's an interesting idea to consider, but quickly looking over the ones available in 10uf, I would have to get into more spacing acrobatics than I'd like to for this build. Do you know what using a smaller capacitance one would do? The 4.7uF ones look small enough to fit. I'm in the "why...

I think I'm decided on the spacing for the large caps now. I'll be avoiding Ø18 as those have been deemed a negligible change, and I believe this thread has picture confirmation of Ø16 caps fitting in the normal spacing. I'd still appreciate hearing anyone's thoughts on audio grade vs. high...

This is true, and I have considered mounting the adjacent film caps under the board to get the extra clearance, but I'd also prefer to keep the aesthetic of a fully populated board since I plan to keep it visible. I also don't want it to end up too tall, which under-mounting any of the...

Hello. New guy here. Going for this as my first amp build! First off, thanks to Pete for this and all the other builds he offers. It's great that he shares these designs, and I doubt this will be the only one I take on. Second, thanks to all the people here. Having read through this thread, I...