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- Users: wap32
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Fostex HP-A3 & HP-A7
So I stumbled upon these today, didn't find any threads about them so I thought I'd start one. HP-A3 (~400$/~297€) is bus powered, and has 24bit/96kHz USB and optical inputs, along with a head-amp, uses a 32-bit AKM AK4392 DAC. HP-A7 (~828/~602€) has 2x optical, coax(192kHz), USB and...- wap32
- Thread
- Replies: 4
- Forum: Dedicated Source Components
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Ground loops and breadboards
So...I decided to test a project amp of mine on a breadboard. I'm using a toroid in a center tapped configuration with the center tap connected to safety ground (earth). Well, this worked fine with my ipod, but as soon as I connected it to something into the mains I got terrible hum and...- wap32
- Thread
- Replies: 8
- Forum: DIY (Do-It-Yourself) Discussions
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AD843 and DC offset
I'm wasn't sure this would be worth creating a new thread, but I didn't want to hijack other threads. I was simulating an amplifier circuit in NI MultiSim (basically an opamp gain stage with class A biasing followed by a mosfet buffer) and while testing it with an AD843 I noticed I was...- wap32
- Thread
- Replies: 6
- Forum: DIY (Do-It-Yourself) Discussions
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Voltage regulator advice
I'm building a simple amp with an opamp gain stage followed by a szekeres ve mosfet buffer and I was hoping to power it using some old transformers I have lying arround. They're iron core, single primary 230VAC, single secondary 24VAC, 50VA. Using both in a center-tapped configuration, after...- wap32
- Thread
- Replies: 17
- Forum: DIY (Do-It-Yourself) Discussions
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mini3 + alien dac question
So I'm thinking about building a mini3 + alien dac combo, both powered by the same battery. Since I'm kind of a newbie when it comes to electronics I'm having some doubts. Since the mini3 uses a virtual ground I would build the alien dac with the buf634u and connect the mini3's gnd, v+ and...- wap32
- Thread
- Replies: 11
- Forum: DIY (Do-It-Yourself) Discussions
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Replacement for Shure E2c's
Recently my E2c's cable has broken and since Shure won't fix them I'm shamelessly using that as an excuse to upgrade I bought the Senns CX-300 hoping they would suffice (I'd read they were almost as good as the E2c's, and they were cheap) but they sucked. Less detail, muddy sound, insane...- wap32
- Thread
- Replies: 4
- Forum: Headphones (full-size)
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HD 595 or ATH A900? Where to get them?
I'm thinking about buying a new set of headphones to replace my HD 212Pros and after doing some research I've come up with the HD 595 and the ATH A900. I was interested in knowing, in terms of sound quality, which one is better. I do prefer closed headphones, but if the difference (in sound...- wap32
- Thread
- Replies: 3
- Forum: Headphones (full-size)