Unfortunately I didn't have a chance to try this wa7d with a Utopia when I was using it, but I have tried the Utopia for many hours with other amps in more recent days, so I do have a bit of experience and good memory with that headphone. I did however buy this WA7D to pair with my beloved...

Up for sale is my WA7d Fireflies tube headphone amplifier/dac combo unit. This one has the great warm charm of the more expensive wooaudio amplifiers but with a small and elegant desktop footprint. Everything is included: WA7d amplifier / dac WA7p linear solid state power supply + cable Sovtek...

Are these still available?

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I was running a γ2 with a Bijou SE (http://www.cavalliaudio.com/diy/bijou/main.php?page=overview), however I am now amp-less as I let go of the Bijou. Headphones being driven are Sennheiser HD 650s. At first I was planning on keeping the γ2 and getting a WA6, however I am also entertaining the...

I went with the 370DAX. Finally got around to buying everything (except knobs.... looking for black ones in similar style to the ones the bottom of this page, but closer to 40 mm so they are a bit more prominent on the chassis). Going to get started populating the boards over the next day or...

Is it worth getting the 370dax over the 270 for ~$18 more? Might actually consider it as I am living in N. America now but may be moving back to UK in the next year or so.

Yeah, I'm getting my kit tomorrow so just currently brainstorming how I'm going to achieve certain tasks. I've decided to go with the HWCHAS from Hammond, I like the look. Not sure if I want the black or natural aluminium finish for the top though. Since the bottom plate is sold separately, I'll...

What's the best way to mount tubes externally without using any screws through the top of my enclosure? Standoffs on the PCBs?

Not to mention USB 3.0 is becoming popularised, maybe designs around that will definately make it viable other other digital connections.

I guess I am not up to date with my USB. It was my understanding that all usb wiring was standard +/-/D+/D-, but when I was looking for cables there are 5 pin ones apparently?   Quote:

Do I need a 4 wire or 5 wire cable for this? I've never heard of a 5-wire cable until now...

I'm soldered surface mount components for projects before, and let me tell you, it's not fun. I always do a great job with soldering, but because of the amount of time involved I'm deciding to get one from MisterX. Just waiting for him to build it, now.

Are there any equivalent/better transformers I could use for the build before I put in my mouser order? The 270dax is ~$70 at mouser (pointless sourcing it from somewhere else as I'm doing a mouser order already, and a cheaper price + shipping would add up to the $70 anyway.). What's this...

I've been taking a look at some projects/mod journals like these for the Chinese amps (from google and threads on diyaudio). Very informative but I was perhaps looking for people that could compare these dacs/mods with other DIY/commercial dacs that are the same price/more expensive. As I am...