I finally got all the parts I wanted for the base model of my CMoy++ so I started to prototype it out on a board from RadioShack. (I'll borrow a friends camera to show how it looks later) It's basically a CMoy with a real ground, buffered outputs, bass boost, and a DC jack for charging the...

My opamps that I had ordered (OPA2134PA and NJM 4556AD) came recently and so I have been tampering with my CMoy again. I tried both and found that the 4556 worked much better for my purposes (low impedance headphones with a bass boost circuit implemented) the only issue was, with the bass boost...

I bought some quad opamps today to play with and after jamming a little bit after configuring the first two amps up as a normal setup I decided I would try to "stack" the amp by wiring the corresponding inpus/outputs to the ones on the amps already wired (all this was done on a breadboard so it...

After reading this article I was wondering if buffers, with their higher output current, were designed to work with low impedance loads.    The article also mentioned that, when used properly, opamps are mostly transparent and the "cheap" 5532 will more often then not perform just as well if...

Let me begin with an apology to all the good people here that put up with me. I know I've posted a lot about this CMoy of mine but at this point I wouldn't be posting unless I had already worked on the thing for the past 6 hours to no avail.   It was working fine earlier today I finally got...

The CMoy that I've been bugging everyone here about is undergoing another mod at the present moment. I /believe/ I understand buffers (I dont have a buffer but have 2 high current opamps that I'm using) and so I'm going to go ahead and add them on....I have one question though. Since I have a...

Ok so I built tangent's CMoy and 2 days ago the initial test went well. Then I added a simple bass boost circuit in series AFTER the feedback resistor (the cap was .22uf and the resistor was a 10k) and it got a slight boost and sounded ok. I then localized the bass boost circuit to the main...

I built a CMoy because I am noobish. One channel has 36mv of DC offset and the other has 8mv. True the Opamp in it is about 5000 levels below sub par (have a nice BB coming in the mail soon) but I'd like to know if there is anything other than the amp that could be at fault here (the amp is a...

I recently built a CMoy amp from the design on tangent's site and added my own flair to it in a couple of ways. I appreciated the simplicity of it and the elegance within this simplicity.....but I could see its flaws....although I don't have a quality amp in it yet (have a BB opa2132 on order...

I've gotten into building headphone amps recently starting with a CMoy for its simplicity and cheapness. I am pleased with my CMoy and I have managed to add a variable bass boost circuit to it and organize it a bit better than I had originally. In spite of all of this, I want better :) I saw the...

I've gotten into building headphone amps recently starting with a CMoy for its simplicity and cheapness. I am pleased with my CMoy and I have managed to add a variable bass boost circuit to it and organize it a bit better than I had originally. In spite of all of this, I want better :) I saw the...